Laminar combined material

FIELD: process engineering.

SUBSTANCE: invention relates to multilayer combined materials. Proposed material comprises: top layer of textile web with porous polymer layer applied on its wrong side, adhesion layer and bottom layer. Porous polymer layer is formed on said working side and consists of the following components in wt %: polyesterurethane - 92.08-94.84; dimethyl formamide - 0.759-1.106; surfactant - 0.759-1.106; di-(2-ethylhexyl)phthalate - 0.759-1.106; microcrystalline cellulose - 2.884-4.604. Said composition is diluted by dimethyl formamide to viscosity of 170-180 poises.

EFFECT: optimised thermophysical and hygienic properties.

6 cl, 5 tbl, 2 ex

 

The present invention relates to light industry, the technical solution of the invention is directed to the development of a multilayer composite material for clothing of various functional purposes.

The production of modern multilayer materials associated with different combinations of textile fabrics with polymer materials (canvas from bonded polymer fibers, films, zakrytoyacheistoy foamed materials and others).

In the RF patents №№20004169, 2004170, 20004171 canvas of bonded polymer fibers "Padding" art. 935568 used as bulk insulation located between the two textile cloths. These technical solutions have improved upregulations properties of the products and to improve their dimensional stability. In the above technical solutions there are no indicators of hygiene and thermophysical properties of the finished material.

In the patent of Russian Federation №2106100 described technical solution for creating a package of materials for insulated underwear, including top and bottom layers of textile materials, having a napped surface (or teasing with two sides), located inside the package, and an intermediate layer made of reindeer fur weighing 120 g/m2when thermal resistance of the package insulated underwear no less 0,196 m2·grad/W and it is hygroscopic at least 16%.

In the second edition of Artificial leather for Shoe upper and the methods of their evaluation, the authors Waiharakeke, Spectorsky, "Light industry", M, 1970, pp. 80, the data on the water loss from the body during the different work depending on air temperature. Comparing with the fact that thermal resistance decreases with increasing secreted by the human body and absorbed hygroscopic element package moisture, note that for the proposed package insulated material presents indicators are not enough.

Similar deficiencies are characterized by technical solutions for RF patents №2129815 and 2170048, where in the first case, to maintain a comfortable thermal conditions used for the base layer low permeability fabric with breathability to 50 l/m2·with synthetic or natural bulk insulation and a breathable lining with a permeability of 50 to 400 l/m2·and the second technical solution package teplosberezheniya service as insulation contains several layers zakrytoyacheistoy polyethylene with a density of 20-50 kg/m3and a thickness of 0.5 to 3.0 mm thermal and hygienic conditions in these technical solutions are not available.

In the patent of Russian Federation №2255637 presents a technical solution relates thermal resistance of the package multilayer textile the second material, where used as an intermediate layer polyolefin film thickness of 40-120 μm single - or double-sided aluminum metallization, with its vapor permeability. The resulting material has:

thermal resistance - 0,11-0,12 m2deg/watt;

permeability - 12,11-of 13.1 mg/m2·C.

The material has the wrong layer of faux fur and is intended for internal parts of winter shoes. However, in this solution there is no data about the package of Shoe material, where the bottom layer is the proposed material, and the top of natural or artificial leather.

It is an established fact that the increase in heat loss through the service packages of laminated composite materials depends on the moisture accumulate in the layers of material in sweating, and secreted by the body heat with moisture to the outside, because thermal conductivity of water is much higher thermal conductivity of textile materials and air. (The conductivity of water is 0.6 W/m·deg) [See for example: Snellen, Scharstein "Artificial skin". M: Light and food industry, 1983, p.60-61; Waiharakeke, Spectoresque Synthetic leather for Shoe upper and assessment methods". M: Light industry, 1970,S. 105-113; Hencken and other "Textile science". M: Lespromizdat, 1992, s-176].

Similar to the proposed technical the CSOs solution is the solution proposed patent RF №2404896, in which the polymer layer using a porous polyetherurethane (PES). From the description of the invention it is known that a multilayer composite material includes facial tissue weighing 110-230 g/m2and attached porous PES-layer with a ratio by weight of material layers respectively: 41-73: 27-59, adhesion layer of 15-20 g/m2the lower layer is 50-70 g/m2. The calculations showed that the multilayer composite material has the following characteristics:

surface density, g/m2- 328-405
the ratio of the layer by weight:
the top layer material- 0,33-0,57
the bottom layer- 0,15-0,17
microporous PES-layer*- 0,28-0,50

(*In the future, for convenience of calculations combined superficial density polymer layers, for example, porous PES-layer - 158 g/m2cumulative surface density of the adhesion layer 15 g/m2. As a result, in the calculation of the porous PES layer has a surface density of 173 g/m2.)

M is capacity PES-layer obtained from the composition of the composition (on dry matter per 1 m 2in wt.%): PES - 68,2-73,0; surface-active substance (SAS) - 2,0-2,61; microcrystalline cellulose - 25,0-29,4 that before applying on the face of the fabric is diluted with dimethylformamide (DMF) to viscosity 170-180 poise.

A prototype of the proposed technical solution is to design a multilayer composite material described in the patent of Russian Federation №2412625, the main element of which is a membrane formed by coagulation method on the wrong side of the woven fabric of the composition of the composition, wt.%:

PES - 79-97,7,

Surfactant - 0.2 to 1.0,

microcrystalline cellulose - 2,0-20,0,

diluted with DMF to a viscosity of 170 poises.

A complete package of the combined material has a water vapor permeability - 690-720 g/m2·day. However, these technical solutions have no information about thermophysical properties of the combined material.

The technical problem of the invention is the design of a multilayer composite material for clothes of different functional purpose, which is optimized thermal and hygienic conditions.

The technical problem is solved by the fact that in the multilayer composite material comprising the upper layer of textile fabrics with applied the wrong side of the porous polymeric layer, the adhesive and Niinisto, the porous polymer layer is formed on the reverse side of the textile fabric of the upper layer of the composition composition (wt.%):

Polyetherurethane- 92,08-94,84
Dimethylformamide- 0,759-1,106
Surfactant- 0,759-1,106
Di-2-ethylhexylphthalate- 0,759-1,106
Microcrystalline cellulose- 2,884-4,604

with weight on the dry substance 58-62 g/m2diluted with DMF to a viscosity of 170 poises, while the textile fabric of the top layer of material has a surface density - 128-301 g/m2thermal conductivity - 0,042-0,078 W/m·deg, the water vapor permeability of not less than 696 g/m2·day and textile fabric bottom layer has a surface density - 204-433 g/m2thermal conductivity - 0,052-0,082 W/m·deg, the water vapor permeability of not less than 722 g/m2·a day with a minimum surface density of the multilayer composite material - 417 g/m2, the coefficient of thermal conductivity no higher than 0,046 W/m·deg, water vapor permeability of not less 652 g/m2·the day and the ratio of the layer mA is eriala by weight - 0,31:0,49:0,20, while the maximum surface density multilayer composite material, equal 819 g/m2has a coefficient of thermal conductivity no higher than 0,056 W/m·deg, the permeability is not less than 765,6 g/m2·the day and the ratio of the layers of material to the weight of 0.37:0,53:0,10. Versions of the multilayer composite material in the form of ready-made packages are:

the ratio of the layer by weight:
the top layer material0,20-0,400,30-0,510,40-0,490,37:
the bottom layer of material0,40-0,670,345-0,600,37-0,420,53:
membraneof 0.20 to 0.130,145-0,100,14 - 0,180,10
surface density, g/m2,417-646590-800484-604819
coefficient of thermal conductivity, W/m·deg,no more than 0,046-0,0520,047-0,0580,049-0,0540,056
water vapor permeability,g/m2·day, not less than652-710690-774645-795765,6

According to the invention used:

1. Textile fabrics manufactured by Bryansk worsted mill (BCA);

2. Teasing knitted fabric of the firm "Biruna" (Poland);

3. Knitted fur production company "Promsinteks" Orenburg;

4. Fabric raincoat polyester (PE) (GOST 28486-90);

The articles, the composition and properties of textile fabrics is presented in table No. 1.

5. Polyetherurethane (PES) brand Vitur-0512", "Vitur-0515", solutions with a dry matter content of 25% 6-55-221-085-89;

6. Dimethylformamide (DMF) - TU 6-09-3720-93;

7. Surface-active substance (surfactant) OP-10 GOST 8433-93;

8. Di(2-ethylhexyl)phthalate (DOP) - GOST 87728-88;

9. Microcrystalline cellulose - TO-55-90;

10. Powdered thermoplastics company "ROWA KAG, Germany, brand: "Roulet" - 300-1/28/0-300", MP. 102-105°C;

"Roulet" - 300-1/28/0-300, MP. 125-128°C;

"Roulet" - 100-20/80-200, MP. 126-129°C.

The invention is illustrated by the following examples:

Example 1.

On the wrong side of textile fabrics (GOST 28486-90) with superficial the th density of 128 g/m 2, thermal conductivity 0,042 W/m·deg, permeability 887 g/m2·day, blade squeegee with a gap of 0.25 mm on the hard table is applied composition, diluted with DMF to a viscosity of 170 poises, composition (wt.%.):

A solution of PES brand "Vitur-0515"- 92,08
DMF- 0,759
PAV- 0,759
DOP- 0,759
Microcrystalline cellulose- 2,884

with weight on the dry substance 58 g/m2and after coagulation, washing laminate from DMF and drying the laminate duplicate from the membrane with knitted fabric art. 02447552 F weighing 204 g/m2, thermal conductivity 0,059 W/m·deg and vapor permeability 817,8 g/m2·the day of obtaining a multilayer composite material, the finished package which has:

the surface density- 417 g/m2
coefficient of thermal conductivity- 0,046 W/m·deg
the water vapor permeability- 652,5 g/m2·day
when the ratio of the layer by weight:
the top layer- 0,31
the bottom layer- 0,49
*membrane- 0,2

(*Cm. note above)

Perfect binding coverage is a randomly placed perfect binding point with a diameter of 1 mm, located at a distance of up to 3 mm weighing 27 g/m2the properties of the material are presented in table 3.

Example 2.

Analogously to example 1 are as multi-layered composite material comprising a textile fabric for the top layer with a surface density of 301 g/m2(see table 1), the coefficient of thermal conductivity 0,052 W/m·deg and vapor permeability 1026,6 g/m2·day formed on its seamy side of the membrane composition composition (wt.%):

A solution of PES brand "Vitur-0515"- 93,5
DMF- 0,93
PAV- 0,93
DOP - 0,93
Microcrystalline cellulose- 3,74,

diluted with DMF to a viscosity of 170 poises by weight on the dry substance - 60 g/m2. Laminate overlap with textile cloth bottom layer of material having a surface density of 433 g/m2coefficient of thermal conductivity 0,058 W/m·deg and permeability 745 g/m2·day.

A complete package of multilayer composite material has:

the surface density- 819 g/m2
coefficient of thermal conductivity- 0,056 W/m·deg
the water vapor permeability- 765,6 g/m2·day

the ratio of the layer by weight: 0,37:0,53:0,10.

Material properties are presented in table 3.

Analogously to examples 1 and 2 prepared multilayered composite materials of the compositions, the compositions and the ratio of the layers are presented in table 2. In example 4, the membrane was not formed, because the polymer coating was formed discretely (weight of polymer coating is not sufficient).

Properties of multilayer composite material according to example 5 are presented in table the e 3.

Table 1 shows the characteristics of the original textile upper and lower layers to obtain a multilayer composite materials.

Table 4 presents the physico-mechanical parameters of the group of laminated materials, correlated with permeability and thermal conductivity.

Technical solution proposed in the description of the patent of the Russian Federation No. 2404896, packages, multi-layer composite materials can be formed by varying the ratio by weight of the materials of the upper layer and the PES porous layer, which limits the range of materials for clothing. Packaging multilayer material according to the prototype is limited by the ratio of the mass of the top layer of material and an almost constant share of the membrane. The data presented in table 5, indicate that the proposed design of the multilayer composite material provides a significant expansion of the range of clothing materials, as evidenced by the following data.

The analysis of tables 3 and 4 in comparison with existing materials for outerwear type of artificial skin suggests that heat-saving and hygienic performance of the proposed multi-layer composite materials will provide comfort with the STS service in the temperature range from 0 to minus 10°C, since at low hygroscopic materials and satisfactory permeability does not occur condensation of moisture in the material volume and change in the coefficient of thermal conductivity.

For comparison, thermal conductivity of the known synthetic materials for clothing (W/m·deg):

Viniliskozga-Tr clothing "Volzhanka"- 0,079
Vinyluracil-Tr porous clothing- 0,084
Urmanskogo clothing "Extrin"- 0,055
Elastisch-T porous clothing- 0,071

When water vapor permeability of not less than 602,5 g/m2·the day (see Snellen, Scharstein, "Artificial skin". - M: Light and food industry, 1983, p 60-61).

Table 2
PES - composition for the formation of membranes
№ p/pThe composition and propertiesThe analog RF Patent 2404896 A prototype RF Patent 2412625Offer examples
123456 through 20
12345678910
1.PES"Vitur 0512"68,2-73,079,0-97,7-93,5-90,095,5-
PES "Vitur 0515"--92,08-94,4--93,5
2.DMF*- 0,7590,9301,1060,651,500,930
3.PAV2,0-2,610.3 to 1.00,7590,9301,1060,651,500,930
4.DOP--0,7590,9301,1060,651,500,930
5.Microcrystalline cellulose25,0-29,43,25-8,872,8843,7404,6042,05,53,74
6.The weight gain of the coating, g/m285-15880-15058,060,0 62,055,065,060,0
7.Adhesion layer, g/m215-2015-2027,025,023,030,020,025,0
8.The ratio of layers of multilayer materials by weight:
top layer:0,33-0,570,50-0,530,3100,3700,360the membrane is not formed0,30see table No. 4
bottom layer:0,15-0,170,14-0,180,490 0,5300,500,50
membrane0,28-0,500,33-0,320,200,100,140,20
*Composition before use, dilute to working viscosity 170-180 poise.

Table 3
The performance of multilayer composite materials
ExamplesCombination textile article of textile fabricsSurface density, g/m2Coefficient of thermal conductivity, W/m·degWater vapor permeability, g/m2·dayThe ratio of the layer by weight: top layer: bottom layer: membrane
the top layerthe bottom layer
12 34567
1GOST 28486-9002447552F4170,046652,50,31:0,49:0,20
22570MTL 535006018190,056765,60,37:0,53:0,10
32551C1157552F6330.05774.00,36:0,50:0,14
4228901107552Fthe membrane is not formed
5GOST 28486-90478302L4340,046665,00,30:0,50:0,20
625705900,052695,00,51:0,345:0,145
72570C1157552F7060,047700,00,426:0,453:0,121
82570MTL 4500801-18000,056725,00,376:0,517:0,110
9GOST 28486-90MTL 535006016460,048710,00,20:0,67:0,13
102447MTL 4500801-16980,058774,00,30:0,60:0,10

220,0 17
Table 4
The performance of multilayer composite materials
ExamplesCombination textile fabricsSurface density, g/m2The breaking load, N strip 50x100 mmElongation, %Resistance to tearing, N.Coefficient of thermal conductivity, W/m·degWater vapor permeability, g/m2·dayThe ratio of the layer by weight: top layer:bottom layer:membrane
Marking of textile fabrics
longitudinal directiontransverse directionlongitudinal directiontransverse directionlongitudinal directiontransverse direction
the top layerthe bottom layer
1234 5678910111213
1125510275 7552 F5221337,01223,047,046,0144, 0mm157,00,049735,00,44: 0,40:0,16
1224470110 7552 F5061140,0920,046,039,0145,0162,00,052679,00,40: 0,40:0,20
132447MTL 535006017171248,0725,045,038,0175,00.048681,00,30: 0,60:0,10
142289MTL 53500601716873,0738,033,033,0213,0197,00,049650,00,30: 0,60:0,10
15228902447552 F4841020,0925,038,043,0213,0203,00,051780,00,40:0,42:0,18
1622890110 7552 F5161222,0725,045,037,0157,0150,00,050645,00,40:0,44:0,16
25570491 7552 F6021313,0822,051,038,0159,0150,00,052733,00,48:0,38:0,14
18138702757552 F5381293,0887,038,045,0132,0of 149.00,054645,00,453:0,390:0,158
191387IT 7552 F5401265,0740,043,038,0120,0132,00,054650,00,431:0,411:of) 0.157
202582IT 7552 F604 1710,01212,057,045,0142,0133,00,051795,00,49:0,37:0,14

Table 5
Comparative characteristics of structures known and proposed composite materials
№ p/pIndicatorsSimilar Patent RF №2404896A prototype RF Patent №2412625According to the invention
Versions of the multilayer composite material
1234
12345678
1.The ratio of the layer material is and by weight:
top0,33-0,570,50-0,530,20-0,400,30-0,510,40-0,490,370
bottom0,15-0,170,14-0,180,40-0,670,345-0,600,37-0,420,53
membrane0,28-0,500,33-0,32of 0.20 to 0.130,145-0,100,14-0,180,10
2.Water vapor permeability, g/ m2·day690-720652-710650-724645-795756,6
3.Coefficient of thermal conductivity, W/m·deg-- 0,046-0,0520,047-0,0580,049-0,0540,056
4.Surface density, g/m2333-405289-513417-646590-800484-604819

1. A multilayer composite material comprising the upper layer of textile fabrics with applied the wrong side of the porous polymeric layer, the adhesive and the lower layers, wherein the porous polymer layer formed on the reverse side of the textile fabric uppers of composition of composition, wt.%:

Polyetherurethane92,08-94,84
Dimethylformamide0,759-1,106
Surfactant brand OP-100,759-1,106
di(2-Ethylhexyl)phthalate0,759-1,106
Microcrystalline cellulose2,884-4,604

with weight on the dry substance 58-62 g/m2diluted with dimethylformamide to which Ascoli 170-180 P,

2. The multilayer composite material according to claim 1, characterized in that the textile fabric for the top material has a surface density 128-301 g/m2thermal conductivity - 0,042-0,078 W(m·deg.), the water vapor permeability of not less than 696 g/(m2·day).

3. The multilayer composite material according to claim 1, characterized in that the textile fabric for the bottom material has a surface density 204-433 g/m2coefficient of thermal conductivity 0,052-0,082 W/(m·deg.), the water vapor permeability of not less than 722 g/(m2·day).

4. The multilayer composite material according to claim 1, characterized in that the minimum surface density is 417 g/m2coefficient of thermal conductivity no higher than 0,046 W/(m·deg.), the water vapor permeability of not less than 652 g/(m2·day) at a ratio of layers of material by weight 0,31:0,49:0,20.

5. The multilayer composite material according to claim 1, characterized in that the maximum surface density is 819 g/m2coefficient of thermal conductivity no higher than 0,056 W/(m·deg.), the water vapor permeability of not less than 765,6 g/(m2·day) at a ratio of layers of material by weight 0,37:0,53:0,10.

6. The multilayer composite material according to items 1 to 5, characterized in that the variants of its implementation in the form of ready-made packages are the ratio of the layer by weight:
- the top layer - 0,20-0,40, bottom layer - 0,40-0,67, the membrane is 0.2 to 0.13, surface density, g/m2- 417-646, coefficient of thermal conductivity, W/(m·deg.) no more than 0.046-0,052, water vapor permeability, g/(m2·day), not less 652-710; or
- the top layer - 0,30-0,51, bottom layer - 0,349 is 0.60, the membrane - 0,145-0,10, surface density, g/m2- 590-800, coefficient of thermal conductivity, W/(m·deg.) no more 0,047-0,058, water vapor permeability, g/(m2·day), not less 650-724; or
- the top layer - 0,40-0,49, the bottom layer is 0.37-0.42 and membrane - 0,14-0,18, surface density, g/m2- 484-604, coefficient of thermal conductivity, W/(m·deg.) no more 0,049-0,054, water vapor permeability, g/(m2·day), not less 645-795; or
- the top layer - 0,370, bottom layer - 0,530, membrane - 0,10, surface density, g/m2- 819, coefficient of thermal conductivity, W/(m·deg.) no more 0,056, water vapor permeability, g/(m2·day), not less 765,6.



 

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12 cl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to rocket engineering, particularly to production of a protective-adhesive lacquer which is used as a primer for binding an inhibiting coating with the surface of the charge when inhibiting solid-propellant charge. The protective-adhesive lacquer contains 4,4',4"-triphenylmethane triisocyanate, dichloroethane, as an adhesive additive - a product of polycondensation of ethylene glycol, adipic acid and glycerine, with content of hydroxyl groups from 2.00 to 2.30 wt % and dibutyltin dilaurate as a curing agent.

EFFECT: obtaining lacquer with high capacity for protection from migration processes in the "fuel-inhibiting coating" system, which reduces smoke formation, increases adhesion strength between the inhibiting coating and the surface of the propellant charge, which contains polyformaldehyde derivative-based components, avoids use of an additional cellulose acetate-based primer, which ensures strong adhesion of solid-propellant charge pellets with the inhibiting coating for the guaranteed storage life of the charge and which enables to use readily available domestic raw materials.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymeric heat-reflecting coating compositions which are applied on inflatable structures, protective and rescue equipment (airstairs for civil aviation, floatation rafts, airships, pneumatic tents, heat-reflecting screens, shields for firefighters), consisting of airtight elastic material based on fabric (capron, nylon, lavsan, high-strength aramid fibre SVM). The polymeric heat-reflecting coating composition contains urethane rubber, a hardener, aluminium paste and ethyl acetate.

EFFECT: production of cold-curable polymeric heat-reflecting coating composition, having high resistance to thermal radiation (up to 29 kW/m2) and minimum weight gain (thickness).

3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to thermally solidificated covering substances based on aprotic solvents. Claimed is covering substance, which contains at least one compound (A), which contains hydroxyl groups, at least one compound (B) with free and/or blocked isocyanate groups, and at least one catalyst (D) for cross-linking silane groups, with one (i) or several components of covering substance containing hydrolysed silane groups and (ii) covering substance can be finally solidificated for covering, which has statistically distributed regions of lattice Si-O-Si. Obtained from covering substance solidificated coating has index of further cross-linking (PCI) lower than 2, with index of the further linking (PCI) being determined as coefficient from memory module E'(200) of finally solidificated coating, measured at 200°C, to minimum of memory module E'(min) of finally solidificated covering, measured at temperature higher than temperature of transition into glass-like state of Tg, and memory modules E'(200) and E'(min),as well as temperature of transition into glass-like state Tg are measured on free films with thickness of layer 40 mcm+/-10 mcm by means of dynamic mechanical thermal analysis (=DMTA) at rate of heating 2 K per minute and frequency 1 Hz and DMTA measurement on free films with thickness of layer 40 mcm+/-10 mcm, which are solidificated for 20 minutes at object temperature 140°C and after solidifying are kept for 8 days at 25°C, before carrying out DMTA measurements. Polyisocyanate (B) at least partially has one or several similar or different structural units of formula -X-Si-R"XG3-X, where G = identical or different hydrolysed groups, in particular alcoxy group, X=organic residue with from 1 to 20 carbon atoms, R" =alkyl, cycloalkyl, aryl or aralkyl, and carbon chain can be broken by non-adjacent oxygen groups, sulphur or NRa, with Ra=alkyl, cycloalkyl, aryl or aralkyl, x=0 to 2. Catalyst (D) is phosphorus-containing, and covering substance contains catalyst (D) from 0.1 to 10 wt % in terms of non-volatile components of covering substance. Also claimed are multi-step method of applying coating with application of claimed covering substance, as well as application of claimed method and versions of claimed coating application.

EFFECT: possibility to obtain transparent varnish coating with high resistance to atmospheric impact.

18 cl, 4 tbl, 7 ex

FIELD: process engineering.

SUBSTANCE: transmissive plastic composite with better acoustic properties is intended for glazing. Said composite consists of, at least, two outer polymethacrylate layers and thermoplastic polyurethane layer arranged there between. Said polymethacrylate layers include polymers with, at least, 80% of polymethacrylate links and up to 20% of acrylate links. Additionally, said composite incorporates scratch-resistant layer made on one or both sides of polymethacrylate layers. At least, one of two outer layers is painted and comprises IR-reflection pigment(s) and additives, as well as impact strength modifier. Said composite is used for fabrication of car body component. Said composite is made by heating plastic plates and moulding them.

EFFECT: higher mechanical and acoustic properties.

10 cl, 1 dwg, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production of plastic and can be used to produce air-tight inflatable articles. The material contains polyester fabric as a textile base, on whose surface an alloy containing the following is deposited through vacuum coating, wt %: 68.2 Fe, 2.0 Mn, 11.6 Ni, 17.5 Cr, 0.7 Ti in amount of 1.0-2.0 g/m2, an adhesive layer based on a polyester urethane composition and a front coating based on polyester urethane composition in form of 2-4 layers, deposited on the front or front and back sides, with the following weight ratio of the layers of the ready material: textile base: adhesive layer: front coating equal to 1.0:0.25-0.57:0.60-0.86, for one-side coating or 1.0:0.40-0.86:0.75-1.28 for double-sided coating using a direct method and 1.0:0.20-0.43:0.35-0.71 or 1.0:0.35-0.57:0.50-1.0 using a reverse method.

EFFECT: material obtained using direct and reverse methods has high bonding strength between the polymer coating and the fabric and weld strength, which ensures long life of different air-tight inflatable articles made from said material.

5 tbl, 5 ex, 2 dwg

FIELD: chemistry.

SUBSTANCE: disclosed is a polyurethane adhesive for laminating films. The polyurethane adhesive for laminating films contains at least one NCO-reactive polyurethane prepolymer and/or polyisocyanates and is cross-linked only through NCO-/acidic H groups. The adhesive is characterised by that it contains between 0.5 and 20 wt % low-molecular weight compound (A) having molecular weight lower than 2000 g/mol, which contains at least one group which is reactive with respect to primary amine groups, selected from an epoxy group, oligomeric polyethers of unsaturated carboxylic acids or vinylphosphonic acid, wherein compound (A) reacts with primary amine groups at a rate slower than the rate of the cross-linking reaction. Disclosed also is use of said adhesives in a method of producing laminated multilayer films which are glued using the disclosed polyurethane adhesives.

EFFECT: films glued using said adhesive contain a negligible amount of aromatic amines capable of migrating.

13 cl, 3 ex

FIELD: technological processes.

SUBSTANCE: inventions relate to products made of flexible ballistic composite materials, in particular, to a flexible ballistic resistant bullet-proof vest. The bullet-proof vest represents a flexible armour with higher resistance to absorption of water and other liquids and containing at least one flexible composite material. At the same time the composite material comprises multiple non-woven fibrous layers, which represent a net of aramid fibres with high strength. Fibres are arranged in a matrix, which is a copolymer mixture of polyurethane resins in water. At the same time the following armour properties are demonstated: a) is characterised by V50 value, equal to at least 1920 f/s (585.6 mp/s) in case of ingress of a bullet with weight of 16 grain after it was submerged into sea water for 24 hours at the temperature of 70°F±5°F (21°C±2.8°C); b) preserves at least approximately 85% of V50 after submersion into tap water for 20 hours at the temperature of 70°F±5°F (21°C±2.8°C) when hit with a fragment of a simulated projectile with weight of 17 grain; and c) preserves at least approximately 85% of V50 after submersion into benzine for 4 hours at the temperature of 70°F±5°F (21°C±2.8°C) when hit by a bullet with weight of 16 grain.

EFFECT: increased resistance to absorption of water and other liquids.

3 cl, 2 dwg, 3 tbl, 16 ex

FIELD: process engineering.

SUBSTANCE: this invention relates to non-sticking multilayer elastomer film and to method of its production. Proposed film comprises first fragile polymer film layer that may not expand to over 110% of its initial size without breakage or cracking, and second elastomer layer. Said first layer is bonded with first surface of said second elastomer layer. First layer represents polystyrene while second layer is selected from the group comprising block-copolymer of styrene and elastomer of polyolefin. Multilayer may be activated by breaking first fragile polymer layer and imparting elastoplasticity to multilayer film. Film layer that may expand to approx. 150% of its initial size and recover after expansion to not over 120% of its initial size. Proposed method comprises producing non-sticking multilayer film layer and activating non-sticking multilayer film with destruction of fragile polymer film layer along with imparting elastoplasticity to multilayer film.

EFFECT: possibility to roll elastomer film and store without its sticking.

19 cl, 8 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of obtaining elastomeric materials and particularly to processing surfaces of elastomer films in order to prevent creating in a roll. The method involves forming a film layer from an elastomeric polymer from a block-copolymer of vinyl arylene and conjugated diene monomers, which can be stretched by at least 150% of the initial size and then shrink to not more than 120% of the initial size. An anti-crease coating layer is applied on the first surface of the film. The coating consists of a solvent and an anti-crease coating component selected from lacquer and a surfactant. The film is rolled into a roll, the anti-crease coating component being in contact with the second surface of the film.

EFFECT: efficient method of processing surfaces of elastomer films to prevent creasing in a roll.

18 cl, 5 dwg, 2 ex

FIELD: textile, paper.

SUBSTANCE: covering includes a textile element of surface 2 and a layer 1, which on the surface and at least partially is connected to this textile element of the surface. The layer 1 contains a viscoelastic polymer foam. The textile element of the surface 2 has a module of elasticity, the value of which makes from ≥0.5 N/mm2 to ≤2.5 N/mm2. In the layer 1 the viscoelastic polymer foam has deposition hardness, the value of which at 40% of compression makes from ≥1 kPa to ≤10 kPa. In the layer 1 the viscoelastic polymer foam has hysteresis, the value of which at the deposition hardness determination of 40% makes ≥20% to ≤70%.

EFFECT: method of manufacturing includes a foaming operation of the back side of the textile element of surface with the help of a reaction mixture, forming a polymer foam of the layer.

13 cl, 8 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to flexible elastomer polyurethane skin for decoration of car interior and method of its production. Proposed skin comprises first and second flexible layers produced by spraying first and second reaction mixes on each other to produce polyurethane. Spraying of second reaction mix is started in no later than 90 s after termination of spraying first reaction mix. First reaction mix is intended for producing aliphatic polyurethane and consists of isocyanate component, components reactive with respect to isocyanate, and catalytic component with lead content less than 2 molar fractions. Second reaction mix is intended for producing aromatic polyurethane. Mean weight of unit surface of proposed skin makes, at least, 0.6 kg/m2 and mean flexure modulus makes less than 30 MPa.

EFFECT: higher flexibility, no lead, stability of colour.

24 cl, 6 tbl, 6 ex, 4 dwg

FIELD: chemistry.

SUBSTANCE: polyurethane material contains a first part of crystalline particles, having self-orientation and bonded so as to keep their orientation along a first crystallographic line at least in two directions, a second part of crystalline particles having self-orientation and bonded so as to keep their orientation along a second crystallographic line at least in two directions, wherein the first crystallographic line is different from the second crystallographic line and where the said crystalline particles constitute more than approximately 30% of the total volume of the polyurethane material, and where the polyurethane contains a product of reaction of components comprising: (a) approximately 1 equivalent of 4,4'-methylene-bis(cyclohexylisocyanate); (b) approximately 0.3 of a trimethylolpropane equivalent; and (c) approximately 0.7 of a butanediol or pentanediol equivalent, and where the polyurethane material undergoes thermal treatment at temperature ranging from approximately 35°C to approximately 150°C or holding.

EFFECT: production of polyurethane material, products of which are made through casting or reaction injection moulding and have good optical properties, high resistance to impact loads, high impact resistance, high K-ratio, good ballistic stability, good resistance to solvents and good weather resistance.

26 cl, 110 ex, 33 tbl, 26 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to multilayer material used in production of laminated moulded articles. Multilayer material comprises laminar material produced by gluing layer (I) and layer (II) together. Layer (I) consists of fluorine-containing resin with functional groups that represent acid residue. Layer (II) consists of thermoplastic resin with functional groups representing amino group, hydroxyl group or epoxy group. Functional groups of thermoplastic resin can form chemical bonding with functional groups of fluorine-containing resin. Fluorine-containing resin features low fusion point of 120-230°C. It is selected from the group consisting of copolymer of ethylene/tetra fluorine ethylene, copolymer of ethylene/tetra fluorine ethylene/hexa fluorine propylene and copolymer of ethylene/tetra fluorine ethylene/hexa fluorine propylene/CH2=CH-Rf, where Rf is C2-6perfluoroalkyl group. Thermoplastic resin (B) is selected from the group consisting of thermoplastic resins based on polyurethane, complex polyether, polyolefin, polyvinyl acetate, polyvinyl chloride and polystyrene. Multilayer material is produced by gluing at heating, multilayer extruding, multilayer moulding or moulding with multilayer lamination.

EFFECT: high-adhesion laminar material, high process efficiency.

7 cl, 1 tbl, 20 ex

FIELD: chemistry.

SUBSTANCE: composite layered rubberised fabric protective material based on butadiene-nitrile rubber with barrier layer is made three-layered and consisting of middle reinforcing layer, on both sides of which outer covering layers are located, and middle reinforcing layer is made in form of fabric from highly strong polyester fibre with thread of linear density 9-12 tex, with specific breaking load not lower than 610 mN/tex and number of coils 180-220 twists/m, or highly strong aramid fibre or their mixture, highly strong aramid thread with linear density 6.3-14.3 tex, specific breaking load not lower than 200 cN/tex and number of coils 90-130 twists/m being used in the fabric, and threads are used in form of two-component combined thread, whose first component in form of rod represents aramid and/or polyester complex thread or yarn, and second component of two-component combined thread in form of rod braid with number of coils 600-900 twists/m represents modified fire-proof viscose thread or yarn with linear density 10-30 tex, in aramid thread or yarn also used are polyparaphenylene terephthalamide, polymetaphenylene terephthalamide, copolyparaphenylene terephthalamide or copolyparaphenylene benzimidazole terephthalamide fibres. Outer covering layers are made from rubber composition, containing butadiene-nitrile rubber, accelerator of vulcanisation - zinc oxide and thiuram "D", sulphur, regulator of vulcanization rate - additionally zinc oxide, white soot and technical carbon, stearic acid, fire retardants - antimony trioxide, chloroparaffin and melamine cyanurate, pigment - titanium white, antioxidant - polymerised 1,2-dihydro-2,2,4-trimethyl quinoline. On the surface of material from one or two sides of outer covering layer applied is barrier film material from five successively located with respect to surface of outer covering layers, made with total thickness 18-36 mcm in the following succession: first layer from polyolefin, second layer from oriented polypropylene copolymer, third layer from polyvinyl alcohol, fourth layer from oriented polypropylene copolymer and fifth layer from polyolefin. Ratio of thicknesses of barrier layer layers is selected equal (0.18-0.22):(0.23-0.27):0.1:(0.23-0.27):(0.18-0.22). From both sides of third layer of barrier film material located are adhesive layers, made from copolymer of ethylene with vinyl alcohol and maleic anhydride, or from copolymer of ethylene with vinylacetate and maleic anhydride or from copolymer of ethylene with maleic anhydride.

EFFECT: invention makes it possible to provide reliable protection of human skin against aerosol and drop penetration of liquid chemical and harmful substances, preserving higher incombustibility and low surface density, and preserve high drapeability of material and its high tensile and tear strength.

10 cl, 6 ex

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