Composite laminar rubber-textile protective material based on butyl rubber with barrier layer

FIELD: process engineering.

SUBSTANCE: proposed invention may be used for protection against poison-gases and chemicals. Butyl rubber-based three-layer material comprises central reinforcing layer and outer cover layers arranged on its both sides. Said central layer is made up of fabric from polyester high-strength thread with liner density of 9-12 tex, specific breaking load of, at least, 160 mN/tex and number of turns of 180-220 t/m, or high-strength aramide thread with linear density of 6.3-14.3 tex, specific breaking load of 200 cN/tex, and number of turns of 90/130 t/m, or mix thereof. Said thread is two-component combine thread. First rod-shape component represents aramide and/or polyester complex thread or yarn, while second component represents rod shield with number of turns of 600-900 t/m made up of modified fire-resistant viscose thread or yarn with linear density of 10-30 tex. Said fabric represents calico, twill, momie or satin weave with identical thread base and weft characteristics and densities. Two outer cover layers are made from rubber composition based on butyl rubber containing cure accelerator, that is, zinc white and thiuram D, curing agent, that, technical sulfur, curing rate regulator, that is, 2-mercaptobenzothiazole, filler, that is, white carbon and technical carbon, plasticiser, that is, stearic acid, chlorinated paraffin wax, netoxol, fluid PMC-400 and zinc stearate, fire retardant, that is, antimony trioxide, chlorinated paraffin wax and melamine cyanurate, pigment, that is, titanium white, and adhesive, that is, paraffin. Barrier film material is applied on both sides on aforesaid material. Said barrier material consists of five consecutive layers with total thickness of 18-36 mcm. Adhesive layers are arranged on both sides of third barrier layer made form copolymer of ethylene with vinyl alcohol and maleic anhydride, or the like.

EFFECT: better protection, higher incombustibility and low surface density.

11 cl, 6 ex

 

The invention relates to means of protection, namely the composite layered protective rubber materials based on butyl rubber with a barrier layer, and can be used for protection from toxic and chemical substances in the liquid state.

Known composite layered rubber protective material made of three-layer and consisting of a middle reinforcing layer, with the two sides of which are outer cover layers, with the middle reinforcing layer is made in the form of a fabric of high tenacity polyester fiber, or high-strength aramid fibers, or mixtures thereof, in the tissue using high-strength polyester yarn with a linear density 9-12 Teks, with specific breaking load not less than 610 mn/Tex and number of coils 180-220 kr./m, and use of high-strength aramid yarn with a linear density of 6.3-14,3 Tex, with specific breaking load not less than 200 CN/Tex, and with the number of coils 90-130 kr./m, and the threads used in the form of a two-component composite yarn, the first component is in the form of a rod is an aramid and/or polyester complex thread or yarn, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 600-900 kr./m is a modified flame-retardant viscose thread and yarn with a linear density of 10-30 Tex, in aramid yarn or the yarn used polyparaphenyleneterephtalamide, polymethylenepolyphenylene, sopolimervinilhloridnye or sopoliorganotsiklokarbosilany fiber, and two outer coating layer made of a rubber composition based on butyl rubber containing as an accelerator of vulcanization - zinc white and thiuram "D", as the vulcanizing agent is sulfur technical, as the speed controller vulcanization - 2-mercaptobenzthiazole, as the filler is carbon black and white carbon technical, as a plasticizer is stearic acid, chloroparaffin, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, and chloroparaffin cyanurate melamine, as the pigment is titanium oxide, as well as antiadhesive - paraffin, in the following ratio of components per 100 parts by weight of butyl rubber:

the vulcanization accelerator3,8-4,2
vulcanizing agent2,2-2,5
the speed controller vulcanization0,8-1,1
filler33-34,1
the plasticizer/td> 18,8-22,9
the flame retardants55,0-59,0
pigment9-10
parting agent1,9-2,1

(see RF Patent №2388608, IPC B32B 25/10, 2010).

However, the known composite laminated material for the manufacture of protective garments along with dependable protection of the skin of man from the aerosol penetration of chemical and harmful substances during their use has the following disadvantages:

- provides reliable protection of the skin of man from incocopernicus penetration of chemical substances and durability when exposed to liquid ethylene dichloride, gasoline, fuel substances, simple hydrocarbons.

The objective of the invention is to provide a composite layered rubber protective material on the basis of butyl rubber with a barrier layer.

The technical result is to provide a reliable protection of the skin of man from aerosol and droplet penetration of liquid chemicals and harmful substances while maintaining high Flammability and low surface density. In addition, the technical result is the high drapeness material, as well as the preservation of its high p is echnosti rupture and tearing.

The technical result is achieved in the proposed composite layered rubber protective material on the basis of butyl rubber with a barrier layer by the combination of components used to manufacture the sequence they appear in the material, the combination of components used to create a barrier coatings, as well as quantitative ratios of constituent components.

The technical result is achieved by the fact that the proposed composite layered rubber protective material on the basis of butyl rubber with a barrier layer, made of three-layer and consisting of a middle reinforcing layer, with the two sides of which are outer cover layers, with the middle reinforcing layer is made in the form of a fabric of high tenacity polyester fiber, or high-strength aramid fibers, or mixtures thereof, in the tissue using high-strength polyester yarn with a linear density 9-12 Teks, with specific breaking load not less than 610 mn/Tex and number of coils 180-220 kr./m, and use of high-strength aramid yarn with a linear density of 6.3-14,3 Tex, with specific breaking load not less than 200 CN/Tex, and with the number of coils 90-130 kr./m, and the threads used in the form of a two-component composite yarn, the first component is in the form of a rod is the Wallpaper aramid and/or polyester complex thread or yarn, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 600-900 kr./m is a modified flame-retardant viscose thread or yarn with a linear density of 10-30 Tex, aramid yarn or the yarn used polyparaphenyleneterephtalamide, polymethylenepolyphenylene, sopolimervinilhloridnye or sopoliorganotsiklokarbosilany fiber, and two outer coating layer made of a rubber composition based on butyl rubber containing as an accelerator of vulcanization - zinc white and thiuram "D", as the vulcanizing agent is sulfur technical, as the speed controller vulcanization - 2-mercaptobenzthiazole, as the filler is carbon black and white carbon technical, as a plasticizer is stearic acid, chloroparaffin, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, chloroparaffin and cyanurate melamine, as the pigment is titanium oxide, as well as antiadhesive - paraffin, in the following ratio of components per 100 parts by weight of butyl rubber:

the vulcanization accelerator3,8-4,2
vulcanizing agent2,22,5
the speed controller vulcanization0,8-1,1
filler33-34,1
the plasticizer18,8-22,9
the flame retardants55,0-59,0
pigment9-10
parting agent1,9-2,1,

on the surface of the material on one or both sides of the outer cover layer is additionally deposited barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 18-36 μm in the following sequence: the first layer of polyolefin, the second of oriented copolymer of polypropylene, a third of the polyvinyl alcohol, the fourth of oriented copolymer of polypropylene and the fifth of the polyolefin, and the ratio of the layer thicknesses of the barrier layer is selected equal to (0,18-0,22):(a 0.23-0.27):0,1:(0,23-0,27):(0,18-0,22), or made with a total thickness of 35-70 μm in the following sequence: first layer of a mixture of metallocene linear low-density polyethylene 30 wt.% linear medium-density polyethylene, the second from a mixture of lean is logo low density polyethylene with 30 wt.% high-density polyethylene, the third is from a mixture of a copolymer of ethylene with 60 wt.% vinyl alcohol, the fourth of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene and the fifth from a mixture of metallocene linear low-density polyethylene 40 wt.% linear low density polyethylene, and the ratio of the layer thicknesses of the barrier layer is selected equal to (0,18-0,22):(a 0.23-0.27):0,1:(0,23-0,27):(0,18-0,22), with the two sides of the third layer of each of the barrier film material posted adhesive layers made of a copolymer of ethylene with vinyl alcohol and maleic anhydride, or a copolymer of ethylene with vinyl acetate and maleic anhydride, or a copolymer of ethylene with maleic anhydride. At the same time as polyolefin barrier film material contains oriented polypropylene. While in the tissue of the middle reinforcing layer of protective material content of high-strength polyester fiber in their mixtures with fiber, polyaramid threads selected from 20 to 80 wt.%. The cloth of his middle reinforcing layer is made plain, twill, satin or satin weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft. This rubber composition of the two outer covering layers of protective material contains as the accelerator is mechanisatie zinc in the amount of 1.9 to 2.1 parts by weight of and thiuram "D" in the amount of 1.9 to 2.1 parts by weight of rubber composition of the two outer covering layers of protective material contains as filler white soot in the number 32,01-34 parts by weight and carbon technical in the amount of 0.09 to 0.1 parts by weight of rubber composition of the two outer covering layers of protective material comprises a plasticizer is stearic acid in the amount of 1.8 and 2.1 parts by weight, chloroparaffin in the number of 7-7,5 parts by weight, necaxa in the amount of 4-6 parts by weight, the liquid PMS-400 in the amount of 4.2 and 5.2 parts by weight and the zinc stearate in the amount of 1.8 and 2.1 parts by weight of this the rubber composition of the two outer covering layers of protective material comprises a flame retardant antimony trioxide in an amount of 4-6 parts by weight, chloroparaffin in the number of 7-7,5 parts by weight and cyanurate melamine in the amount 44-45,5 parts by weight is made of a copolymer of ethylene adhesive layers of barrier film material contain 7-10 mol. % vinyl alcohol and 12-30 mol. %Maleinovogo anhydride. This is made from a copolymer of ethylene adhesive layers of barrier film material contain 18-30 mol. % vinyl acetate and 7-10 mol. % of maleic anhydride. This is made from a copolymer of ethylene adhesive layers of barrier film material contain 7-10 mol. % of maleic anhydride.

Among the essential features characterizing the proposed composition the second layered rubber protective material on the basis of butyl rubber with a barrier layer, distinctive are:

- coating the surface of the material with one or two sides of its outer covering layer of barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer,

- implementation of barrier film material with a total thickness of 18-36 μm in the following sequence of its layers: the first layer of polyolefin, the second of oriented copolymer of polypropylene, a third of the polyvinyl alcohol, the fourth of oriented copolymer of polypropylene and the fifth of the polyolefin, and the ratio of the layer thicknesses of the barrier layer is selected equal to (0,18-0,22):(a 0.23-0.27):0,1:(0,23-0,27):(0,18-0,22),

- implementation of barrier film material with a total thickness of 35 to 70 μm in the following sequence of its layers: the first layer of a mixture of metallocene linear low-density polyethylene 30 wt.% linear medium-density polyethylene, the second of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene, a third of a mixture of a copolymer of ethylene with 60 wt.% vinyl alcohol, the fourth of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene and the fifth from a mixture of metallocene linear low-density polyethylene 40 wt.% linear low density polyethylene, and the ratio is of Olsen layers of the barrier layer is selected equal to (0,18-0,22):(a 0.23-0.27):0,1:(0,23-0,27):(0,18-0,22),

- accommodation on two sides of the third layer of each of the barrier film material of the adhesion layer made of a copolymer of ethylene with vinyl alcohol and maleic anhydride, or a copolymer of ethylene with vinyl acetate and maleic anhydride, or a copolymer of ethylene with maleic anhydride,

- use as a polyolefin barrier film material oriented polypropylene,

the choice in the cloth of his middle reinforcing layer content of high-strength polyester fiber in their mixtures with fiber, polyaramid threads from 20 to 80 wt.%,

- performance fabric middle reinforcing layer plain, twill, satin or satin weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft,

- the content in the rubber composition of the two outer covering layers of protective material as an accelerator of vulcanization of zinc oxide in the amount of 1.9 to 2.1 parts by weight and turama "D" in the amount of 1.9 to 2.1 parts by weight,

- the content in the rubber composition of the two outer covering layers of protective material as a filler of carbon black in white number 32,01-34 parts by weight and carbon technical in the amount of 0.09 to 0.1 parts by weight,

- the content in the rubber composition of the two outer covering layers of protective material as the Plaza is idicator stearic acid in the amount of 1.8 and 2.1 parts by weight, chloroparaffin in the number of 7-7,5 parts by weight, nataksala in the amount of 4-6 parts by weight, the liquid PMS-400 in the amount of 4.2 and 5.2 parts by weight and zinc stearate in the amount of 1.8 and 2.1 parts by weight,

- the content in the rubber composition of the two outer covering layers of protective material as flame retardants of trioxide antimony in an amount of 4-6 parts by weight, chloroparaffin in the number of 7-7,5 parts by weight and cyanurate melamine in the amount 44-45,5 parts by weight,

the content is made of a copolymer of ethylene adhesive layers of barrier film material 7-10 mol. % vinyl alcohol and 12-30 mol. % maleic anhydride,

the content is made of a copolymer of ethylene adhesive layers of barrier film material 18-30 mol. % vinyl acetate and 7-10 mol. % maleic anhydride,

the content is made of a copolymer of ethylene adhesive layers of barrier film material 7-10 mol. % of maleic anhydride.

Experimental studies of the proposed composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer in the field has shown its high efficiency. Composite layered rubber protective material on the basis of butyl rubber with a barrier layer when its use provides reliable protection of the skin of man from aerosol and droplet penetration of the chemical and in the region of substances (time of protective action when exposed to liquid dichloroethane is not less than 8 hours), it has a low surface density (up to 250 g/m2). In addition, a material resistant to an open flame for at least 5 seconds, and high drape while maintaining the tensile strength on the basis of 1130-1370 H and tensile tearing on the basis of 100-125 H.

Manufacturing technology proposed composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer does not require the use of specific technological equipment.

The essence of the proposed technical solution is illustrated by the following examples.

Example 1. Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer made of three-layer and contained a middle reinforcing layer, both sides of which are outer layers made of polymer compositions based on butyl rubber containing a vulcanization activator, vulcanizing agents, the speed controller vulcanization, filler, plasticizer, flame retardants and pigments. Middle reinforcing layer is made in the form of a fabric of high tenacity polyester fiber. While in the tissue of the middle reinforcing layer used high-strength polyester yarn with a linear density of 9 Tex, with specific breaking load 673 mn/Tex and number of coils 180 kr./m in VI is e two-component composite yarn, the first component is in the form of a rod was a polyester complex thread, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 600 kr./m was a modified flame-retardant viscose yarn with a linear density of 10 Tex. This fabric middle reinforcing layer is made of plain weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft.

Two outer coating layer made of a rubber composition based on butyl rubber BK-M containing as an accelerator of vulcanization - zinc white BC-1 and thiuram "D", as the vulcanizing agent is sulfur technical grade 9990, as the speed controller vulcanization - 2-mercaptobenzthiazole, as filler - black white BS-100 and carbon technical P-803, as a plasticizer is stearic acid, chloroparaffin HP-1100, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, chloroparaffin CP-1100 and cyanurate melamine, as the pigment is titanium oxide R-02, as well as antiadhesive - paraffin, with the following content of components per 100 parts by weight of butyl rubber: of 1.9 parts by weight of zinc white, and 2.1 parts by weight of turama "D", 2,2 parts by weight of sulfur technical, to 1.1 parts by weight of 2-mercaptobenzo the ash, 33 parts by weight of carbon black to white, and 0.09 parts by weight of carbon technical, and 1.8 parts by weight of stearic acid, 14 parts by weight of chloroparaffin, 4 parts by weight of nataksala and 4.2 parts by weight of liquid PMS-400, and 2.1 parts by weight of zinc stearate, 4 parts by weight of antimony trioxide, 46 parts by weight of cyanurate melamine, 9 parts by weight of titanium oxide and 1.9 parts by weight of paraffin.

On the surface of the composite layered rubber protective material on the basis of butyl rubber with a barrier layer on one side of its outer coating layer additionally deposited barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 36 μm in the following sequence: the first layer of polyolefin in the form of oriented polypropylene, the second of oriented copolymer of polypropylene, a third of the polyvinyl alcohol, the fourth of oriented copolymer of polypropylene and the fifth of the polyolefin in the form of oriented polypropylene, and the ratio of the layer thicknesses of the barrier layer was 0,18:0.27:0,10:0,27:0,18. With the two sides of the third inner layer of barrier film material posted adhesive layers made of a copolymer of ethylene with 7 mol. % vinyl alcohol and 12 mol. % of maleic anhydride. The barrier layer bonded to the outer cover layer of protective material floor is urethane adhesive (PU-2) based on the mixture of product and 24K product T, taken in a 2:1 ratio.

Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer when its use provides reliable protection of the skin of man from aerosol and droplet penetration of chemical and harmful substances (resistance and protective properties when exposed to liquid dichloroethane was more than 8 hours), has a low surface density of 290 g/m2. In addition, a material resistant to an open flame for at least 5 seconds, and high drape while maintaining the tensile strength on the basis 1105 H and resistance to tearing on the basis of 98 H.

Example 2. Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer made of three-layer and contained a middle reinforcing layer, both sides of which are outer layers made of polymer compositions based on butyl rubber containing a vulcanization activator, vulcanizing agents, the speed controller vulcanization, filler, plasticizer, flame retardants and pigments. Middle reinforcing layer is made in the form of a fabric of high tenacity aramid fibers. While in the tissue of the middle reinforcing layer used yarn with a linear density of 14.3 Tex, with specific breaking load 209 CN/Tex and the number is the number of coils 130 kr./m in the form of a two-component composite yarn, the first component is in the form of a rod was an aramid, made of polyparaphenyleneterephtalamide fibers, complex thread, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 880 kr./m was a modified flame-retardant viscose yarn with a linear density of 30 Tex. This fabric middle reinforcing layer is made of satin weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft.

Two outer coating layer made of a rubber composition based on butyl rubber BK-M containing as an accelerator of vulcanization - zinc white BC-1 and thiuram "D", as the vulcanizing agent is sulfur technical grade 9990, as the speed controller vulcanization - 2-mercaptobenzthiazole, as filler - black white BS-100 and carbon technical P-803, as a plasticizer is stearic acid, chloroparaffin HP-1100, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, chloroparaffin CP-1100 and cyanurate melamine, as the pigment is titanium oxide R-02, as well as antiadhesive - paraffin, with the following content of components per 100 parts by weight of butyl rubber: of 2.1 parts by weight of zinc white, and 2.0 parts by weight of turama "is", of 2.4 parts by weight of sulfur technical, and 1.0 parts by weight of 2-mercaptobenzthiazole, and 33.5 parts by weight of carbon black white 0,095 parts by weight of carbon technical, and 1.9 parts by weight of stearic acid, to 14.4 parts by weight of chloroparaffin, 6 parts by weight of nataksala, and 5.2 parts by weight of liquid PMS-400, and 1.8 parts by weight of zinc stearate, 5 parts by weight of antimony trioxide, 45 parts by weight of cyanurate melamine, and 9.6 parts by weight of titanium dioxide and 2.0 parts by weight of paraffin.

On the surface of the composite layered rubber protective material on the basis of butyl rubber with a barrier layer on two sides of its outer covering layer of barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 18 μm each in the following sequence: the first layer of polyolefin in the form of oriented polypropylene, the second of oriented copolymer of polypropylene, a third of the polyvinyl alcohol, the fourth of oriented copolymer of polypropylene and the fifth of the polyolefin in the form of oriented polypropylene, and the ratio of the layer thicknesses of the barrier layer was 0,22:0.23:0,10:0,23:0,22. With the two sides of the third inner layer of barrier film material posted adhesive layers made of a copolymer of ethylene with 10 mol. % vinyl alcohol and 30 mol. % of maleic anhydride. Barrier layers glued caragnano top layer of protective material is a polyurethane adhesive (PU-2) based on the mixture of product and 24K product T, taken in a 2:1 ratio.

Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer when its use provides reliable protection of the skin of man from aerosol and droplet penetration of chemical and hazardous substances (the resistance when exposed to liquid dichloroethane was more than 8 hours), has a low surface density of 280 g/m2. In addition, a material resistant to an open flame for at least 5 seconds, and high drape while maintaining the tensile strength on the basis of 1190 H and resistance to tearing on the basis of 120 H.

Example 3. Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer made of three-layer and contained a middle reinforcing layer, both sides of which are outer layers made of polymer compositions based on butyl rubber containing a vulcanization activator, vulcanizing agents, the speed controller vulcanization, filler, plasticizer, flame retardants and pigments. Middle reinforcing layer is made in the form of a fabric of a mixture of high-strength polyester and high-strength aramid fibers content in the mixture of high-strength aramid fibers in an amount of 20 wt.% and when used as aramid fibers on metaphenylenediamine fibers. While in the tissue of the middle reinforcing layer used high-strength polyester yarn with a linear density of 12 Tex, with specific breaking load 668 mn/Tex and with the number 220 kr./m, and also used high-strength aramid yarn with a linear density of 6.3 Tex, with specific breaking load 221 CN/Tex and the number of twists 100 kr./m, and the threads used in the form of a two-component composite yarn, the first component is in the form of a rod was a complex thread, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 900 kr./m was a modified flame-retardant viscose yarn with a linear density of 25 Tex. This fabric middle reinforcing layer is made of twill weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft.

Two outer coating layer made of a rubber composition based on butyl rubber BK-M containing as an accelerator of vulcanization - zinc white BC-1 and thiuram "D", as the vulcanizing agent is sulfur technical grade 9990, as the speed controller vulcanization - 2-mercaptobenzthiazole, as filler - black white BS-100 and carbon technical P-803, as plasticizer - acid CTE is Renovo, chloroparaffin HP-1100, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, chloroparaffin CP-1100 and cyanurate melamine, as the pigment is titanium oxide R-02, as well as antiadhesive - paraffin, with the following content of components per 100 parts by weight of butyl rubber is 2.0 parts by weight of zinc white, and 1.9 parts by weight of turama "D", and 2.5 parts by weight of sulfur technical, and 0.8 parts by weight of 2-mercaptobenzthiazole, 34 parts by weight of carbon black to white, to 0.1 parts by weight of carbon technical, and 2.1 parts by weight of stearic acid, 15 parts by weight of chloroparaffin, 5,2 parts by weight of nataksala, and 4.75 parts by weight of liquid PMS-400, 1,95 parts by weight of zinc stearate, 6 parts by weight of antimony trioxide, 44 parts by weight of cyanurate melamine, 10 parts by weight of titanium dioxide and 2.1 parts by weight of paraffin.

On the surface of the composite layered rubber protective material on the basis of butyl rubber with a barrier layer on two sides of its outer covering layer of barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 35 μm each in the following sequence: first layer of a mixture of metallocene linear low-density polyethylene 30 wt.% linear medium-density polyethylene, the second of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene, a third of a mixture of a copolymer of ethylene with 6 wt.% vinyl alcohol, the fourth of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene and the fifth from a mixture of metallocene linear low-density polyethylene 40 wt.% linear low density polyethylene, and the ratio of the layer thicknesses of the barrier layer was 0,22:0.23:0,10:0,23:0,22. With the two sides of the third inner layer of barrier film material posted adhesive layers made of a copolymer of ethylene with 30 mol. % vinyl acetate and 7 mol. % of maleic anhydride. Barrier layers are glued to the outer covering layer of protective material is a polyurethane adhesive (PU-2) based on the mixture of product and 24K product T taken in a 2:1 ratio.

Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer when its use provides reliable protection of the skin of man from aerosol and droplet penetration of chemical and hazardous substances (the resistance when exposed to liquid dichloroethane was more than 8 hours), has a low surface density of 290 g/m2. In addition, a material resistant to an open flame for at least 5 seconds, and high drape while maintaining the tensile strength on the basis of 1356 N. and resistance to tearing on the basis of 127 N.

Example 4. Composite layered resined is Navy protective material (BIH-B) based on butyl rubber with a barrier layer made of three-layer and contained a middle reinforcing layer, on both sides of which are outer layers made of polymer compositions based on butyl rubber containing a vulcanization activator, vulcanizing agents, the speed controller vulcanization, filler, plasticizer, flame retardants and pigments. Middle reinforcing layer is made in the form of a fabric of a mixture of high-strength polyester and high-strength aramid fibers content in the mixture of high-strength aramid fibers in an amount of 80 wt.% and when used as aramid fibers sopoliorganotsiklokarbosilany fibers. While in the tissue of the middle reinforcing layer used high-strength polyester yarn with a linear density of 10 Tex, with specific breaking load 668 mn/Tex and 200 kr./m, and also used high-strength aramid yarn with a linear density of 10.2 Tex, with specific breaking load 221 CN/Tex and the number of twists 100 kr/m, and the threads used in the form of a two-component composite yarn, the first component is in the form of a rod was made of a mixture of high-strength polyester and high-strength aramid fibers complex thread, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 720 kr./m was a modified flame-retardant viscose thread with Lin who Inoi density 28 Tex. This fabric middle reinforcing layer made sateen weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft.

Two outer coating layer made of a rubber composition based on butyl rubber BK-M containing as an accelerator of vulcanization - zinc white BC-1 and thiuram "D", as the vulcanizing agent is sulfur technical grade 9990, as the speed controller vulcanization - 2-mercaptobenzthiazole, as filler - black white BS-100 and carbon technical P-803, as a plasticizer is stearic acid, chloroparaffin HP-1100, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, chloroparaffin CP-1100 and cyanurate melamine, as the pigment is titanium oxide R-02, as well as antiadhesive - paraffin, with the following content of components per 100 parts by weight of butyl rubber: 1,97 parts by weight of zinc white, 1,95 parts by weight of turama "D", 2,35 parts by weight of sulfur technical, and 0.9 parts by weight of 2-mercaptobenzthiazole, a 33.6 parts by weight of carbon black white, 0,093 parts by weight of carbon technical, 1,95 parts by weight of stearic acid, is 14.7 parts by weight of chloroparaffin of 4.8 parts by weight of nataksala, of 4.9 parts by weight of liquid PMS-400, and 2.0 parts by weight of zinc stearate, a 4.7 parts by weight of antimony trioxide, with 44.9 parts by weight of cyanurate melamine, the 9.7 parts by weight of titanium dioxide and 2.02 parts by weight of paraffin.

On top of the awn composite layered rubber protective material on the basis of butyl rubber with a barrier layer on two sides of its outer covering layer of barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 70 μm each in the following sequence: first layer of a mixture of metallocene linear low-density polyethylene 30 wt.% linear medium-density polyethylene, the second of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene, a third of a mixture of a copolymer of ethylene with 60 wt.% vinyl alcohol, the fourth of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene and the fifth from a mixture of metallocene linear low-density polyethylene 40 wt.% linear low density polyethylene, and the ratio of the layer thicknesses of the barrier layer was 0,18:0.27:0,10:0,27:0,18. With the two sides of the third inner layer of barrier film material posted adhesive layers made of a copolymer of ethylene with 18 mol. % vinyl acetate and 10 mol. % of maleic anhydride. Barrier layers are glued to the outer covering layer of protective material is a polyurethane adhesive (PU-2) based on the mixture of product and 24K product T taken in a 2:1 ratio.

Composite layered rubber protective material (BIH-B based on butyl rubber with a barrier layer when its use provides reliable protection of the skin of the person the century from aerosol and droplet penetration of chemical and hazardous substances (the resistance when exposed to liquid dichloroethane was more than 8 hours), it has a low surface density of 200 g/m2. In addition, a material resistant to an open flame for at least 5 seconds, and high drape while maintaining the tensile strength on the basis of 1267 H and resistance to tearing on the basis of 120 H.

Example 5. Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer made of three-layer and contained a middle reinforcing layer, both sides of which are outer layers made of polymer compositions based on butyl rubber containing a vulcanization activator, vulcanizing agents, the speed controller vulcanization, filler, plasticizer, flame retardants and pigments. Middle reinforcing layer is made in the form of a fabric of a mixture of high-strength polyester and high-strength aramid fibers content in the mixture of high-strength aramid fibers in an amount of 20 wt.% and when used as aramid fibers polymethylenepolyphenylene fibers. While in the tissue of the middle reinforcing layer used high-strength polyester yarn with a linear density of 12 Tex, with specific breaking load 668 mn/Tex and with the number 220 kr./m, and also used high-strength aramid yarn with a linear density of 6.3 Tex, with specific breaking load 221 CN/Tex and number to the weft 100 kr./m, moreover, the threads used in the form of a two-component composite yarn, the first component is in the form of a rod was a complex thread, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 900 kr./m was a modified flame-retardant viscose yarn with a linear density of 25 Tex. This fabric middle reinforcing layer is made of twill weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft.

Two outer coating layer made of a rubber composition based on butyl rubber BK-M containing as an accelerator of vulcanization - zinc white BC-1 and thiuram "D", as the vulcanizing agent is sulfur technical grade 9990, as the speed controller vulcanization - 2-mercaptobenzthiazole, as filler - black white BS-100 and carbon technical P-803, as a plasticizer is stearic acid, chloroparaffin HP-1100, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, chloroparaffin CP-1100 and cyanurate melamine, as the pigment is titanium oxide R-02, as well as antiadhesive - paraffin, with the following content of components per 100 parts by weight of butyl rubber is 2.0 parts by weight of zinc white, and 1.9 parts by weight of tiara is a "D", to 2.5 parts by weight of sulfur technical, and 0.8 parts by weight of 2-mercaptobenzthiazole, 34 parts by weight of carbon black to white, to 0.1 parts by weight of carbon technical, and 2.1 parts by weight of stearic acid, 15 parts by weight of chloroparaffin, and 5.2 parts by weight of nataksala, and 4.75 parts by weight of liquid PMS-400, 1,95 parts by weight of zinc stearate, 6 parts by weight of antimony trioxide, 44 parts by weight of cyanurate melamine, 10 parts by weight of titanium dioxide and 2.1 parts by weight of paraffin.

On the surface of the composite layered rubber protective material on the basis of butyl rubber with a barrier layer on two sides of its outer covering layer of barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 35 μm each in the following sequence: first layer of a mixture of metallocene linear low-density polyethylene 30 wt.% linear medium-density polyethylene, the second of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene, a third of a mixture of a copolymer of ethylene with 60 wt.% vinyl alcohol, the fourth of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene and the fifth from a mixture of metallocene linear low-density polyethylene 40 wt.% linear low density polyethylene, and the ratio of the layer thicknesses of the barrier layer was 0,20:0.25:0,10:0,25:0,20. With two parties the third inner layer of barrier film material posted adhesive layers, made from a copolymer of ethylene with 7 mol. % of maleic anhydride. Barrier layers are glued to the outer covering layer of protective material is a polyurethane adhesive (PU-2) based on the mixture of product and 24K product T taken in a 2:1 ratio.

Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer when its use provides reliable protection of the skin of man from aerosol and droplet penetration of chemical and hazardous substances (the resistance when exposed to liquid dichloroethane was more than 8 hours), has a low surface density of 265 g/m2. In addition, a material resistant to an open flame for at least 5 seconds, and high drape while maintaining the tensile strength on the basis of 1260 H and resistance to tearing on the basis of 118 H.

Example 6. Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer made of three-layer and contained a middle reinforcing layer, both sides of which are outer layers made of polymer compositions based on butyl rubber containing a vulcanization activator, vulcanizing agents, the speed controller vulcanization, filler, plasticizer, flame retardants and pigments. Middle reinforcing layer is made as a fabric of high tenacity aramid fibers. While in the tissue of the middle reinforcing layer used yarn with a linear density of 14.3 Tex, with specific breaking load 209 CN/Tex and number of coils 130 kr./m in the form of a two-component composite yarn, the first component is in the form of a rod was an aramid, made of polyparaphenyleneterephtalamide fibers, complex thread, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 880 kr./m was a modified flame-retardant viscose yarn with a linear density of 30 Tex. This fabric middle reinforcing layer is made of satin weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft.

Two outer coating layer made of a rubber composition based on butyl rubber BK-M containing as an accelerator of vulcanization - zinc white BC-1 and thiuram "D", as the vulcanizing agent is sulfur technical grade 9990, as the speed controller vulcanization - 2-mercaptobenzthiazole, as filler - black white BS-100 and carbon technical P-803, as a plasticizer is stearic acid, chloroparaffin HP-1100, necaxa, liquid PMS-400 stearate and zinc, as a flame retardant is antimony trioxide, chloroparaffin CP-1100 is cyanurate melamine, as the pigment is titanium oxide R-02, as well as antiadhesive - paraffin, with the following content of components per 100 parts by weight of butyl rubber: of 2.1 parts by weight of zinc white, and 2.0 parts by weight of turama "D", and 2.4 parts by weight of sulfur technical, and 1.0 parts by weight of 2-mercaptobenzthiazole, and 33.5 parts by weight of carbon black white 0,095 parts by weight of carbon technical, and 1.9 parts by weight of stearic acid, to 14.4 parts by weight of chloroparaffin, 6 parts by weight of nataksala, and 5.2 parts by weight of liquid PMS-400, and 1.8 parts by weight of zinc stearate, 5 parts by weight of antimony trioxide, 45 parts by weight of cyanurate melamine, and 9.6 parts by weight of titanium dioxide and to 2.0 parts by weight of paraffin.

On the surface of the composite layered rubber protective material on the basis of butyl rubber with a barrier layer on two sides of its outer covering layer of barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 18 μm each in the following sequence: the first layer of polyolefin in the form of oriented polypropylene, the second of oriented copolymer of polypropylene, a third of the polyvinyl alcohol, the fourth of oriented copolymer of polypropylene and the fifth of the polyolefin in the form of oriented polypropylene, and the ratio of the layer thicknesses of the barrier layer was 0.19:0.26:0,10:0,26:0,19. With the two sides of the third internal the layer of barrier film material posted by the adhesive layers, made from a copolymer of ethylene with 10 mol.% maleic anhydride. Barrier layers are glued to the outer covering layer of protective material is a polyurethane adhesive (PU-2) based on the mixture of product and 24K product T taken in a 2:1 ratio.

Composite layered rubber protective material (BIH-B) based on butyl rubber with a barrier layer when its use provides reliable protection of the skin of man from aerosol and droplet penetration of chemical and hazardous substances (the resistance when exposed to liquid dichloroethane was more than 8 hours), has a low surface density of 240 g/m2. In addition, a material resistant to an open flame for at least 5 seconds, and high drape while maintaining the tensile strength on the basis of 1267 H and resistance to tearing on the basis of 121 H.

1. Composite layered rubber protective material on the basis of butyl rubber with a barrier layer, made of three-layer and consisting of a middle reinforcing layer, with the two sides of which are outer cover layers, with the middle reinforcing layer is made in the form of a fabric of high tenacity polyester fiber, or high-strength aramid fibers or mixtures thereof, in the tissue using high-strength polyester yarn with a linear density of 912 Tex, with specific breaking load not less than 610 mn/Tex and number of coils 180-220 kr./m, and use of high-strength aramid yarn with a linear density of 6.3-14,3 Tex, with specific breaking load not less than 200 CN/Tex, and with the number of coils 90-130 kr./m, and the threads used in the form of a two-component composite yarn, the first component is in the form of a rod is an aramid and/or polyester complex thread or yarn, and the second component of a two-component composite yarn in the form of a braid of the rod with the number of coils 600-900 kr./m is a modified flame-retardant viscose thread or yarn with a linear density of 10-30 Tex, aramid yarn or the yarn used polyparaphenyleneterephtalamide, polymethylenepolyphenylene, sopolimervinilhloridnye or sopolimervinilhloridnye-phthalamide fiber, and two outer coating layer made of a rubber composition based on butyl rubber containing as an accelerator of vulcanization - zinc white and thiuram "D", as the vulcanizing agent is sulfur technical, as the speed controller vulcanization - 2-mercaptobenzthiazole, as the filler is carbon black and white carbon technical, as a plasticizer is stearic acid, chloroparaffin, necaxa, liquid PMS-400 stearate and C is NSV, as a flame retardant is antimony trioxide, chloroparaffin and cyanurate melamine, as the pigment is titanium oxide, as well as antiadhesive - paraffin in the following ratio of components per 100 parts by weight of butyl rubber:

the vulcanization accelerator3,8-4,2
vulcanizing agent2,2-2,5
the speed controller vulcanization0,8-1,1
filler33-34,1
the plasticizer18,8-22,9
the flame retardants55,0-59,0
pigment9-10
parting agent1,9-2,1,

characterized in that on the surface of the material on one or both sides of the outer cover layer is additionally deposited barrier film material, consisting of five consecutive with respect to the outer surface of the coating material layer made with a total thickness of 18-36 μm in the following sequence: the first layer of polyolefin, the second one oriented SOP is limera polypropylene, the third of the polyvinyl alcohol, the fourth of oriented copolymer of polypropylene and the fifth of the polyolefin, and the ratio of the layer thicknesses of the barrier layer is selected equal to (0,18-0,22):(a 0.23-0.27):0,1:(0,23-0,27):(0,18-0,22), or made with a total thickness of 35-70 μm in the following sequence: first layer of a mixture of metallocene linear low-density polyethylene 30 wt.% linear medium-density polyethylene, the second of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene, a third of a mixture of a copolymer of ethylene with 60 wt.% vinyl alcohol, the fourth of a mixture of linear low density polyethylene with 30 wt.% high-density polyethylene and the fifth from a mixture of metallocene linear low-density polyethylene 40 wt.% linear low density polyethylene, and the ratio of the layer thicknesses of the barrier layer is selected equal to (0,18-0,22):(a 0.23-0.27):0,1:(0,23-0,27):(0,18-0,22), with the two sides of the third layer of each of the barrier film material posted adhesive layers made of a copolymer of ethylene with vinyl alcohol and maleic anhydride, or a copolymer of ethylene with vinyl acetate and maleic anhydride or ethylene with maleic anhydride.

2. Composite layered rubber protective material according to claim 1, characterized in that as a polyolefin barrier film material which contains oriented polypropylene.

3. Composite layered rubber protective material according to claim 1, characterized in that the cloth of his middle reinforcing layer, the content of high-strength polyester fiber in their mixtures with fiber, polyaramid threads selected from 20 to 80 wt.%.

4. Composite layered rubber protective material according to claim 1, characterized in that the fabric of his middle reinforcing layer is made plain, twill, satin or satin weave with the same properties of yarns in the warp and weft and obtaining the same values of the density on the fabric in the warp and weft.

5. Composite layered rubber protective material according to claim 1, characterized in that the rubber composition of the two outer covering layers contains as an accelerator of vulcanization zinc in the amount of 1.9 to 2.1 parts by weight and thiuram "D" in the amount of 1.9 to 2.1 parts by weight of

6. Composite layered rubber protective material according to claim 1, characterized in that the rubber composition of the two outer covering layers contains as filler white soot in the number 32,01-34 parts by weight and carbon technical in the amount of 0.09 to 0.1 parts by weight of

7. Composite layered rubber protective material according to claim 1, characterized in that the rubber composition of the two outer cover layers comprises a plasticizer is stearic acid in the amount of 1.8 to 21 parts by weight, chloroparaffin in the number of 7-7,5 parts by weight, necaxa in the amount of 4-6 parts by weight, the liquid PMS-400 in the amount of 4.2 and 5.2 parts by weight and the zinc stearate in the amount of 1.8 and 2.1 parts by weight of

8. Composite layered rubber protective material according to claim 1, characterized in that the rubber composition of the two outer covering layers contains as flame retardants antimony trioxide in an amount of 4-6 parts by weight, chloroparaffin in the number of 7-7,5 parts by weight and cyanurate melamine in the amount 44-45,5 parts by weight of

9. Composite layered rubber protective material according to claim 1, characterized in that it is made of a copolymer of ethylene adhesive layers of barrier film material contain 7-10 mol.% vinyl alcohol and 12-30 mol.% maleic anhydride.

10. Composite layered rubber protective material according to claim 1, characterized in that it is made of a copolymer of ethylene adhesive layers of barrier film material contain 18-30 mol.% vinyl acetate and 7-10 mol.% maleic anhydride.

11. Composite layered rubber protective material according to claim 1, characterized in that it is made of a copolymer of ethylene adhesive layers of barrier film material contain 7-10 mol.% maleic anhydride.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: method of producing antimicrobial polyethylene terephthalate fibre comprises operations for treating fibre with a lubricating agent, wetting the fibre with aqueous emulsion of triclosan which contains a surface-active component of a lubricating agent, and subsequent orientation stretching of the fibre. The emulsion also contains sintanol, with the following ratio of components in wt %: triclosan 0.8-1.0; sintanol 3.0-4.0; distilled water 95.0-96.2.

EFFECT: composition of a modifying liquid in form of an aqueous emulsion which enables to lower expenses on production of antimicrobial fibre.

2 tbl

FIELD: chemistry.

SUBSTANCE: method involves operations for drawing fibre in contact with a surface-active colloidal solution of silver, thermal stabilisation and drying. Aqueous glycerin solution serves as the dispersion liquid of the colloidal solution, where said glycerin solution contains cetylpyridinium chloride or borate ions, and bimetallic colloidal particles are silver particles on which copper is deposited. The colloidal solution has the following composition, wt %: colloidal silver 0.1-2.1, colloidal copper 0.1-3.0, cetylpyridinium chloride 0.01-0.03, borate ions 0.1-0.2, glycerin 20-60, water - the rest.

EFFECT: introduction of such a solution into the structure of microcavities formed in fibres using a Kreysing mechanism endows the fibres with antimicrobial activity.

3 tbl, 1 ex

FIELD: machine building.

SUBSTANCE: here is disclosed procedure for production of poly-ethylene-terephtalate items by means of drawing polymer item of stretched shape in adsorption-active fluid medium containing dissolved silver salt, and by means of drying item in isometric conditions with successive heat treatment of item at 50°C and above during not less, than 5 sec. Film, fibre, tube, rod or tape can be used as a polymer item of stretched shape.

EFFECT: simplified production of poly-ethylene-terephtalate items and raised antibacterial properties compared to known.

6 cl, 2 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to technology of manufacturing thermoplastic monofilaments and can be used in fabrication of bristle used under high humidity conditions. Monofilament is composed of polymer blend constituted by at least one polyamide and at least one thermoplastic polyester. Ratio of constituents in the blend is selected according to technical and functional properties determined, on one hand, by destination of bristle and, on the other hand, by environmental conditions in the bristle application location. Polyamide fraction ranges from 10 to 30% and that of polyester from 70 to 90%. Bristle completely meets functional and technical requirements as well as environmental conditions.

EFFECT: reduced manufacturing cost.

16 cl

The invention relates to a polyester fiber, which is a small number contain other additives, and the method of its production

FIELD: chemistry.

SUBSTANCE: present invention relates to production of cross-linkable aramide copolymer compositions and articles made therefrom. The composition contains an aramide copolymer obtained from monomers containing 1,4-phenylenediamine and tetraphthaloyl dichloride, and having at least one arylene-carboxylic acid link and at least one hydroxyarylene link. Alternatively, the composition contains an aramide copolymer obtained from monomers containing 1,4-phenylenediamine and tetraphthaloyl dichloride, and having at least one arylene-carboxylic acid link or at least one hydroxyarylene link and a covalent cross-linking agent. The invention also relates to cross-linked copolymers obtained from said composition and moulded articles containing such cross-linked copolymers.

EFFECT: invention enables to obtain materials with improved operational properties.

15 cl, 9 ex

FIELD: chemistry.

SUBSTANCE: method involves preparation of two solutions of a mixture of 5(6)-amino-2(para-aminophenyl)benzimidazole with 5(6)-amino-2(para-iminoquinone)benziimide in dimethylacetamide which contains lithium chloride, and then addition of paraphenylenediamine and an equimolar amount of terephthaloyl chloride to the first solution, and to the second solution - an equimolar amount of a dianhydride of pyromellitic acid. Said solutions are mixed at room temperature until formation of a spinning solution with dynamic viscosity of 300-600 P and concentratio of 3.5-4.0 wt %. The solution is filtered, vacuum treated and formed in a water-salt or water-alcohol settling bath, dried and thermally treated in free state. Industrial fireproof ballistic fabric is then produced from the obtained fibres. Threads obtained according to the invention have elementary fibre diametre higher than 10 mcm, rupture resistance not lower than 280 cN/tex and relative elongation of 3.8-4.5%.

EFFECT: invention enables to obtain fibres, threads, films with high elasticity while retaining good strength properties.

2 cl, 3 tbl, 4 ex

FIELD: process for producing of fully aromatic polyamide fibers comprising filler, in particular, aluminous mineral.

SUBSTANCE: fully aromatic polyamide fiber contains 100 weight parts of fully aromatic polyamide and from 0.05 to 20 weight parts of particles of aluminous mineral having laminated structure, such as hectorite, saponite, stevensite, beidellite, montmorillonite, and swelling mica.

EFFECT: improved mechanical properties of fibers, which may be provided with technological stability at fiber forming stage.

17 cl, 1 dwg, 3 tbl, 7 ex

FIELD: processes for producing of fibers, fibrids and articles from said fibers and fibrids, in particular, non-woven products, paper, and may be used for manufacture of electric insulation.

SUBSTANCE: articles are reinforced with fibers and/or fibrids produced from mixture of thermally stable polymers - aromatic polyamides, aromatic polyamide-imide resins or polyimide resins and thermoplastic polymers - polysulfides, polysulfones. Method involves reinforcing articles by thermal pressing at temperature exceeding glass transition temperature of thermoplastic polymer.

EFFECT: improved mechanical properties and air permeability and high processability.

23 cl, 2 dwg, 7 tbl, 20 ex

FIELD: production of thermally- and fire-resistant textile materials, in particular, materials produced from mixture of thermally stable synthetic fiber and oxidized polyacrylonitrile fiber, which may be used for manufacture of protective clothing for rescuers, servicemen, firemen, oil industry workers, and gas industry workers, filtering fabrics for cleaning of hot gases from toxic dust in metallurgical, cement and other branches of industry, decorative materials, thermally-resistant isolation, and toxic asbestos substitutes.

SUBSTANCE: method involves mixing non-oxidized polyacrylonitrile fiber with thermally stable synthetic fiber in the ratio of from 30/70 to 80/20, respectively; subjecting resulting mixture in the form of yarn, tape, fabric to thermally oxidizing processing at temperature of 240-310 C during 10-180 min.

EFFECT: elimination of problems connected with textile processing of frangible oxidized polyacrylonitrile fibers owing to employment of elastic polyacrylonitrile fibers rather than such oxidized fibers.

2 cl, 7 tbl, 6 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to technology of manufacturing thermoplastic monofilaments and can be used in fabrication of bristle used under high humidity conditions. Monofilament is composed of polymer blend constituted by at least one polyamide and at least one thermoplastic polyester. Ratio of constituents in the blend is selected according to technical and functional properties determined, on one hand, by destination of bristle and, on the other hand, by environmental conditions in the bristle application location. Polyamide fraction ranges from 10 to 30% and that of polyester from 70 to 90%. Bristle completely meets functional and technical requirements as well as environmental conditions.

EFFECT: reduced manufacturing cost.

16 cl

FIELD: production of electric conducting pulp for manufacture of paper, reinforcing polymer materials and packaging films.

SUBSTANCE: pulp contains fibrous particles including 65-95 mass-% of para-amide and 5-35 mass-% of sulfonated polyaniline containing sulfur in the amount of 8.5-15 mass-% which is dispersed over entire para-amide partially covering the particles externally. Specific area of surface of fibrous particles exceeds 7.5 m2/g. Pulp may be mixed with 95 mass-% of pulp of other material including poly-n-phenylene terephthlamide. Paper made from this pulp reduces rate of electric charge lesser than 150 ml.

EFFECT: enhanced efficiency.

6 cl, 4 tbl, 1 ex

FIELD: processes for manufacture of synthetic threads, fibers and filaments from polyamide.

SUBSTANCE: method involves mixing melts of two compounds, namely, linear polyamide and polyamide including macromolecular star-like or H-like chains comprising one or more nuclei, and at least three polyamide side chains or segments, which are bound with nucleus and produced from amino acid and/or lactam monomers, or multifunctional compounds with three similar acidic or amine functional groups; forming resultant melt mixture into threads, fibers or filaments and drawing if necessary.

EFFECT: increased effectiveness of process for producing of threads, fibers and filaments and improved elongation properties.

22 cl, 4 tbl, 6 ex

The invention relates to a technology for obtaining molded products - fibers or films based on aromatic copolyamid with heterocycles in the chain and can be used in the chemical industry for the reinforcement of plastics, rubber products, as tire cord, for obtaining fabrics and other materials for technical purposes and for the manufacture of films and pulp

FIELD: chemistry.

SUBSTANCE: invention relates to polymerisation of isoolefins and polyolefins for producing butyl rubber based polymers filled with silicon dioxide. The method involves dispersion of siliceous nanoclay, containing a quaternary onium ion as a substitute, in an organic solvent which is suitable for use as a polymerisation medium for butyl rubber, particularly methyl chloride. At least one isoolefin monomer and at least one polyolefin monomer are then dissolved in an organic solvent. Further, the isoolefin monomer and polyolefin monomer are polymerised in the presence of nanoclay. Said method enables to obtain a nanocomposite material containing a butyl rubber based polymer intercalated with nanoclay. Addition of nanoclay into the liquid polymerisation medium essentially does not affect the rate of polymerisation.

EFFECT: obtained polymers, which are filled with silicon dioxide, have improved impermeability compared to non-filled polymers.

16 cl, 2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to triethylamine-functionalised elastomers. Described is a vulcanised rubber composition used to make elastomeric articles, which contains an elastomer which contains links formed by C4-C7-isoolefin, links formed by para-alkylstyrene, links formed by para-(halogenalkylstyrene) and links formed by para-(triethylammonium alkylstyrene), having a triethylammoniumalkyl group suspended from an elastomer E, in accordance with the following formula: where R and R1 are identical or different and denote one of the groups from hydrogen atom, C1-C7-alkyls and primary and secondary C1-C7-alkylhalides, where the elastomer has molar ratio of triethylamine functionality to the benzyl halogen atom from 1:100 to 1:1; filler and a hardening set. Described also is said elastomer, which can be used to make elastomeric articles. The invention also describes articles made from said composition, as well as a method of making said articles. A tyre inner insert is also described.

EFFECT: improved protective properties of the elastomer and improved processability.

21 cl, 4 dwg, 5 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to an adhesive polymer, adhesive polymer and polymer compositions based on said polymer, as well as a composite article. The adhesive polymer contains maleic anhydride-grafted butyl rubber obtained by: a) dissolving bromated butyl rubber in a non-polar hydrocarbon solvent, b) adding to the solution at least 1 part maleic anhydride per 100 parts rubber, antioxidant and catalyst of formula , where M denotes a bivalent metal, R1 denotes an alkyl hydrocarbon residue with 2-20 carbon atoms, R2 denotes an alkyl hydrocarbon residue with 2-20 carbon atoms, c) carrying out a reaction in that solution, at pressure not lower than 6.9 bars and temperature 120°C or at a lower reaction temperature, which results in formation of butyl rubber with grafted maleic anhydride.

EFFECT: obtaining butyl polymer with higher adhesion power and making composite articles from said polymer.

15 cl, 2 ex, 4 tbl

FIELD: chemistry.

SUBSTANCE: rubber mixture contains the following in pts.wt per 100 pts.wt of the rubber mixture: butyl rubber polymer 50-98, olefin polymer of ethylene and at least one α-olefin 2-50, peroxide curing agent 2-5, and optionally at least one diene. Moulded articles are obtained from the rubber mixture.

EFFECT: invention increases hardness, extension and lowers gas and moisture permeability of the obtained articles.

9 cl, 1 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: rubber mixture for making moulded articles contains a peroxide curable butyl rubber composition prepared from a butyl rubber polymer, a polybutadiene rubber polymer with 70-95% vinyl groups in a 1,2-microstructure, a ternary ethylene-propylene-diene copolymer with weight ratio of ethylene links to propylene ranging from 40:60 to 65:35 and 1-10 parts of peroxide curing agent per 100 parts of the rubber mixture.

EFFECT: disclosed rubber articles have high Shore hardness, good extension and low gas and moisture permeability.

11 cl, 2 dwg, 2 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: peroxide-curable rubber compound contains a peroxide curing substance and a halobutyl ionomer with high content of multi-olefin. The halobutyl ionomer is obtained via polymerisation of a mixture of monomers containing 80-95 wt % isobutene monomer and 4-20 wt % isoprene monomer in the presence of AlCl3 and a source of protons and/or carbocationic compound or silyl cationic compound, capable of initiating polymerisation and 0.01-1.0 wt % multi-olefin cross-linking agent to obtain a butyl polymer with high content of multi-olefin, halogenation of the butyl polymer and reaction thereof with a phosphorus-based nucleophile.

EFFECT: invention enables to obtain a heat resistant peroxide-curable compound with a halobutyl ionomer with high content of multi-olefin and to obtain a moulded article from said compound without inorganic impurities.

13 cl, 2 tbl, 4 ex

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