Fire-resistant rubber mixture
SUBSTANCE: invention relates to production of a fire-resistant rubber mixture and can be used in oil extraction, oil processing and mining industry. The rubber mixture contains the following ingredients, pts.wt (per 100.00 pts.wt rubber): butadiene-nitrile rubber - 100,00; thiuram D - 1.5; N,N'-dithiodimorpholine - 2.0; sulphenamide C - 2.0; naphtham-2 - 1.5; diaphene FP - 1.0; stearine - 1,0; colophony - 5.0; N-nitrosodiphenylamine - 1.0; chalk - 30.0; technical carbon P 701 - 55.0; technical carbon P 514 - 20.0; zinc oxide - 5.0; antimony trioxide - 4.0; chlorinated paraffin CP-1100 - 20.0; trichloroethylphosphate - 15.0; barium borate - 5.0.
EFFECT: obtaining a fire-resistant rubber mixture with high resistance to aggressive media and improved elasticity and strength properties.
The invention relates to the field of production of fire-resistant rubber compound and can be used in the oil, petrochemical and mining industry.
Known rubber mixture based on the composition of butadiene (methyl) styrene rubber, polyvinyl chloride and modifying additives - 2,6-decret-butyl-4-methylaminoethanol (I) or poly- (N-3,5-decret-butyl-4-oxytrol) ethylenimine, including vulcanizing agent, a metal oxide and an organic vulcanization activator (Patent RU №2010814 1994).
The disadvantage of this rubber are low rates of macrobertsons and uprugoopticheskii properties, not a high fire resistance.
Closest to the technical essence is a rubber mixture based on butadiene-nitrile rubber stamps BNKS-40 AM (AMS) -100,0, including mass, h: thiuram D - 1.5, N,N'-dithiodimorpholine - 2,0; sulfenamid "C" - 2,0; naphthas-2 - 1,5; deafen OP - 1,0; zinc white - 5,0, rosin - 5,0, chalk of MOR, MMS-1 - 30,0, carbon black P 701-55,0; carbon black P 514 - 20,0, dibutyl - 15,0 described in the patent RU No. 2232171 2002, which is the number of matching characteristics is selected as the closest analogue of the prototype of the proposed mixture. The vulcanizate of the rubber mixtures based on butadiene-nitrile rubber (BOC) are characterized by high is some resistance to various aggressive environments (oil, grease, oil). Because of these properties they are widely used for the manufacture of seals, gaskets, seals, sleeves, boots and other rubber products. However one of the major disadvantages of rubber is low resistance.
The objective of the invention is to increase the fire resistance of the rubber when exposed to sparks and open flame, the improvement of physical and mechanical properties with preservation of the resistance to aggressive media.
Technical results of the present invention to provide a fire-resistant rubber with high resistance to aggressive environments and high uprugoopticheskii properties.
This object is achieved by selection of flame retardants and optimization in a ratio of combustible ingredients in the rubber composition. The rubber mixture comprises, mass. including:
|Carbon black N 701||45,0-55,0|
|Carbon P 514||15,0-25,0|
|The barium borate||4,0-6,0|
The introduction of the ingredients above or below the limit values leads to deterioration of the output characteristics of rubber. What is new is the combination in a ratio of known flame retardants used in the rubber industry and the use of trichlorotriazine as a plasticizer, which allows to obtain a technical result.
According to the applicant, the composition of reinvoiced unknown and it is possible to draw a conclusion about conformity of the invention to condition patentability on the novelty.
As stated set of essential features showing new properties that allow you to obtain the change of the quantitative outcome measures, and improved fire resistance, improved physico-mechanical characteristics of rubber as compared with the known rubber, it is possible to draw a conclusion about conformity of the invention to condition patentability of "inventive step".
Obtaining the inventive rubber mixture is carried out in industrial conditions on mixing rolls.
The rubber mixture obtained by mixing the rubber BNKS-40 AMS with ingredients on a laboratory roll mill for 35-40 minutes At the order of input of the ingredients is as follows:
1. The dissolution and the plasticization of rubber BNKS-40 AMS within 5 min when the gap between the rollers 1-2 mm;
2. Enter stearin, sulfenamide C, Naftna - 2, N-nitrosodiphenylamine, zinc oxide, diafana OP for 3 min, increasing the gap between the rollers to 5-6 mm;
3. Enter chalk, barium borate, antimony trioxide, rosin for 2 min;
4. Enter carbon black P 701, chloroparaffin CP-1100 for 8 min;
5. Water carbon black P 514, trichloracetate for 10 min;
6. Input turama N,N'-dithiodimorpholine for 4 min, the reduction of the gap to 1-2 mm;
7. Pass through the roller gap of 1-2 mm for 3 minutes. The cooled mixture flowing water to a temperature not b is over 20°C.
Samples for the determination of physico-mechanical properties and fire resistance rubber compound prepared according to the rubber industry standards.
To obtain a rubber compound used the following materials: nitrile butadiene rubber stamps BNKS-40 AMS - TU 38.30313-2006; vulcanization accelerators - thiuram D (tetramethyldisilazane) - GOST 740-76, sulfenamid C (N-cyclohexylbenzothiazole-2) - TU 113-00-057616376-02-95; vulcanizing agent is N,N'-dithiodimorpholine - TU 6-14-321-79; fillers - technical carbon P 701 and P 514 - GOST 7885-86; chalk - GOST 12085-88; a vulcanization activator is zinc oxide (zinc white) - GOST 202-84; technological additive - stearin - GOST 6484-96; antioxidants - naphthas-2 (phenyl-2-naphtylamine) - GOST 39-79, deafen OP (N-phenyl-N'-isopropylacetanilide) - TL6-14-817-81; antiscorching - N-nitrosodiphenylamine - TU 6-14-907-88; plasticizers trichloroethylphosphate - TU 2493-319-05763441-2000, rosin - GOST 19113-84; flame retardants antimony trioxide THAT 48-14-1-88; chloroparaffin CP-1100 - TU 2493-211-05763458-97; barium borate - TU 113-07-014-91.
In the proposed rubber mixtures can be used analogues of rubber and ingredients, produced by different companies.
The compositions of the rubber mixtures is given in table 1.
|The contents of the ingredients, parts by weight|
|Ingredients||Rubber mixture according to the invention||The placeholder|
|Carbon P 514||20,0||20,0|
|The barium borate||5,0||-|
Comparative characteristics of the new formulation of the rubber mixtures according to the invention application and the rubber mixture of the prototype are shown in table 2.
|№ p/p||Indices||Rubber mixture according to the invention||The placeholder||Control methods|
|1||Conditional tensile strength, M is a, not less than||10,0||to 12.0||GOST 270-75|
|2||Elongation at break, %||400||300||GOST 270-75|
|3||Hardness shore a, unit shore a||70-75||60-75||GOST 263-75|
|4||Fire (the burning time of the sample), s||1-2||More than 20|
|5||Oxygen index, g/m3||28,2||-||GOST 12.1.044 - 89|
|6||Change indicators And+T(7:3) at 23°C for 24 h, %||+10||+10||GOST 9.030 -74|
From table 2 it follows that the rubber mixture according to the invention on the basis of butadiene-nitrile rubber has elevated uprugoopticheskii properties compared with the prototype, higher fire resistance (less time to mount the ia sample), as well as the high value of oxygen index, then there is a nonflammable material.
Given the above, according to the applicant, the invention meets the condition of patentability "industrial applicability".
Fire-resistant rubber mixture based on butadiene-nitrile rubber, including thiuram D, N,N'-dithiodimorpholine, sulfenamid C, naphthas, 2-deafen OP, rosin, chalk, carbon black P 701, carbon black P 514, zinc oxide, characterized in that the mixture additionally contains stearin, N-nitrosodiphenylamine, antimony trioxide, chloroparaffin HP-1100, trichlorethylene, borate and barium in the following ratio of ingredients, mass:
|Carbon black N 701||45,0-55,0|
|Carbon P 514||15,0-25,0|
|The barium borate||4,0-6,0|
SUBSTANCE: invention relates to fire-resistant foamed polystyrene articles which can be used in building and fitting houses. The foamed article with apparent density of 5-200 kg/m3 is obtained from a composition containing the following components, wt %: 25-60 foamed or foamable small beads or particles of polystyrene, 10-30 foamed substance, 30-50 fire-resistant binder which is an inorganic material selected from a list which includes metal silicates, metal aluminates, metal aluminosilicates and zeolites. The foamed substance is at least one substance selected from a group comprising melamine, phosphine, phosphonate, foamed graphite, foamed small glass beads and nanoclay. Also described is a method of producing a fire-resistant foamed polystyrene article, involving a step for applying a coating of fire-resistant binder and a foamed substance on foamed small beads or particles of polystyrene, drying the coated small beads, transferring the coated small beads or particles into a die mould and pressing and moulding the small beads or particles at high temperature.
EFFECT: higher fire-resistance of foamed articles made from polystyrene and preserving structural strength when in contact with fire.
10 cl, 2 tbl, 5 ex
SUBSTANCE: at the first step (a) of the method of preparing fire-resistant binder, a hardener is added to liquid epoxy resin, having temperature not higher than approximately 30°C. At the second step (b), copper nanoparticles are added to the obtained mixture At the third step (c) the mixture is mixed with the added copper nanoparticles to obtain a stable suspension. At the fourth step (d) the obtained suspension is added to pre-accelerated cold-setting vinyl ether resin. Finally, at the fifth step (e) the formed mixture is stirred to obtain fire-resistant binder.
EFFECT: high fire resistance of composite materials prepared using said binder, while preserving mechanical characteristics of such materials, their physical-mechanical properties and manufacturability when processing using an infusion technique.
18 cl, 3 ex, 2 tbl
FIELD: construction industry.
SUBSTANCE: invention refers to construction materials, and namely to fire retardants for making flame-resistant coatings for metal and wood, and can be used in shops of factories and construction sites for applying coatings to metal and wooden structures in order to increase their fire resistance. Fire retardant includes the following, wt %: magnesium hydroxide 20-70; carbamide 5-10; liquid glass is the rest. Invention has been developed in depending claim.
EFFECT: increasing heat-absorption capacity of filling, increasing efficiency of fire-resistant coatings for metals and wood, simplifying and cheapening technical process of obtaining and preparation of filler, stabilisation of filler properties during its transportation and storage.
2 cl, 5 tbl, 5 ex
FIELD: carbon materials.
SUBSTANCE: invention relates to graphite intercalates, which can be used as safe supplement in preparation of fireproofing compositions. Volume-growing graphite intercalates contain, as intercalated constituents, at least one intercalated Lewis acid selected from aluminum, antimony, zinc, yttrium, chromium, nickel, and/or iron chlorides and, if necessary, in combination with solvent(s) used in preparation thereof, and at least one organic compound.
EFFECT: enabled purposeful setting of initial temperatures of graphite intercalates within a wide range.
13 cl, 1 dwg, 2 tbl, 6 ex
FIELD: production of fireproof materials and protective textile materials possessing specific properties.
SUBSTANCE: proposed composition contains 100 parts by mass of low-molecular siloxane rubber, 25-80 parts by mass of hardening agent and 20-60 parts by mass of ortho-titanium ester. Stability of composition may be increased at room temperature to 72 h and abrasion resistance may be increased by six times.
EFFECT: enhanced efficiency; enhanced stability and abrasion resistance.
1 tbl, 5 ex
SUBSTANCE: invention deals with transparent fireproof glazing. It contains sheets of glass and one or several layers of swelling composition from hydrated silicate of alkali metal between them. Thickness of said different component parts and composition of swelling layer or layers is obtained without drying. Thickness of e glazing is expressed in millimeters, that is sheets of glass and swelling layer (-s), and class of fire resistance EI, expressed in minutes, satisfies ratio 3≤EI/e. Swelling layer (-s) has(have) content of water between 33% and 43% wt % and molar ratio between 3.5 and 5.
EFFECT: invention ensures creation of glazing with high characteristic of fire resistance.
6 cl, 4 dwg
SUBSTANCE: invention relates to chemical industry and production of fire-resistant materials. The composition contains liquid low-molecular weight siloxane rubber, ethyl silicate-40, tetrabutoxytitanium, boric acid and cobalt phthalocyanine.
EFFECT: invention increases fire resistance and wear resistance of coated material, provides a place for connecting components made from said material with resistance to an open flame, high strength and elasticity for a long period of time.
SUBSTANCE: invention relates to chemical industry and the industry of structural materials, and specifically to production of chemical-resistant, low-flammable polymer compositions, which can be used in repairing and reconstructing building structures. The low-flammable chemical-resistant polymer composition contains, wt %: epoxy-diane resin 26.88-33.67, amine curing agent 2.53-3.90, mixture of butadiene-nitrile rubber or low molecular weight polybutadiene and trichlorodiphenyl in ratio of 1:1 10.12-15.28, mineral filler which is treated with low-temperature plasma 39.8-46.70, antimony trioxide 1.63-2.85, 1,1-dichloro-2,2-di(4-chlorophenyl)ethylene bromation product containing 50.44% bromine, 22.38% chlorine, 26.54% carbon and 0.64% hydrogen 5.19-8.55.
EFFECT: invention increases strength of chemical-resistant and low-flammable compositions and coatings when repairing and reconstructing concrete and reinforced concrete building structures.
FIELD: wood-working industry.
SUBSTANCE: flame retardant for wood processing comprises bishofite salt, water, magnesium acetate, oxalic acid and ferrous iron hydroxide, the pH of the solution is not more than 3.0 units. The density of the composition is limited with the interval of 1120-1140 kg/m3.
EFFECT: increased penetration ability, as well as fire retardant and bioprotective effectiveness of the composition, reduced toxicity and aggressiveness of the composition.
SUBSTANCE: invention is meant for fireproofing building structures, primarily metallic structures. The crude mixture contains binder and aggregate - vermiculite. The binder used is composite binder which contains 60-80% portland cement and 20-40% finely dispersed vermiculite cyclone dust, which is a foamed vermiculite production waste. The aggregate used is 0.63-2.5 fraction foamed vermiculite. The ratio of the composite binder to foamed vermiculite is 1:1.5-1:2.5 by volume.
EFFECT: higher fire-retardant efficiency of the disclosed compositions, wider range of domestic fire-retardant materials, reduced cost thereof and avoiding scarce materials, replacement thereof with production wastes, as well as improved environmental friendliness and technological simplicity.
3 cl, 2 tbl, 6 ex
SUBSTANCE: invention relates to making solid gels based on complex mixtures of hydrosilicates of alkali metals. Porous silica material, which contains not less than 70 wt % amorphous SiO2 is crushed until silica sand is obtained. The sand and the air-dried granular caustic alkali are then fed into a reactor having a switched on mixer and then stirred until a hot viscous semi-finished product is obtained. The semi-finished product is loaded into containers and held therein with gradual natural cooling to ambient temperature until a mature solid hydrosilicate gel is obtained.
EFFECT: simple equipment used in the process and less need for external heat sources.
7 cl, 4 tbl
SUBSTANCE: method involves treating carbonaceous material first with 4-10% aqueous solution of sodium silicate or alkaline solution of nanodispersed silicon dioxide powder, drying at normal conditions, followed by saturation with aqueous sulphamate solution (ammonium or sodium) and final drying. Saturation is carried out while maintaining pH of the saturating solution in the range of 4-8. Fire-resistance of the material treated using said method increases 7.7-8.4 fold.
EFFECT: high fire-resistance.
4 cl, 3 dwg, 1 tbl, 11 ex
SUBSTANCE: invention relates to a fire-retarding composition with intumescent action for metal structures. The composition contains a film-forming agent, hardener OSA-1, an ionic surfactant and thickener. The film-forming agent used is an aluminophosphate or aluminochromophosphate film-forming agent. The thickener used is crushed basalt fibre, glass microspheres or mixture thereof. The fire-retarding composition has improved process characteristics, particularly intumescence capacity at high temperatures.
EFFECT: use of the composition increases fire-retarding efficiency.
SUBSTANCE: fireproof composition contains the following components in wt %: portland cement 25.0-50.0, kaolin 8.0-18.0, redispersed organic polymer 1.5-3.5, cellulose ether 0.1-0.8, foamed vermiculite - balance. The produced fireproof composition is a single-component. Application of the composition provides for fireproof efficiency for up to 240 min.
EFFECT: composition is resistant for a long time under conditions of open atmosphere of mild climate and is suitable for machine application onto protected surface.
3 tbl, 2 ex
SUBSTANCE: composite contains epoxy resin, a hardener and filler - glass spheres and a nano-modifier. The nano-modifier - aluminium oxide and zirconium oxide and/or yttrium oxide - is prepared via sol-gel synthesis, carried out with reverse co-deposition of hydroxides of aluminium and zirconium and/or yttrium. The composite is obtained by mixing epoxy resin and the nano-modifier, adding the hardener, followed by gradual addition of glass spheres.
EFFECT: improved heat resistance, fire resistance and chemical resistance.
3 cl, 4 ex
FIELD: process engineering.
SUBSTANCE: invention relates to rubber mix. Rubber mix comprises soot to be mixed with rubber mix. Said soot is produced in kiln including continuous zones: kiln gas formation zone, reaction zone and reaction outage zone. High-temperature kiln gas is produced by combustion of hydrocarbons, spraying and injecting of raw stock in said high-temperature kiln gas in reaction zone. Fast cooling of high-temperature kiln gas in reaction outage zone produces aforesaid soot by adjustment of definite characteristics. Rubber mix contains produced soot in amount of 10-250 wt % per 100 wt % of rubber component (A). Rubber component A contains diene-based rubber with conjugated dual bonds.
EFFECT: well-balanced rolling and wear resistance of proposed tire.
8 cl, 1 dwg, 3 tbl, 25 ex
SUBSTANCE: polymeric casting composition based on styrene-ethylene-butylene-styrene blockcopolymer contains antioxidant tetrakismethylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate)methane, polypropylene, filler - microcalcite with average size of particle 2.1 mcm, naphthenic softener, polyphenyloxide, which increases size of end blocks of polystyrene, modified montmorillonite and superconcentrate of black pigment with the following component ratio (wt.p): styrene-ethylene-butylene-styrene blockcopolymer 100, Naphthenic softener 114-115, Polyphenyloxide 29-30, Polypropylene 44-45, Superconcentrate of black pigment 9-9.5, Filler - microcalcite 22-61, modified montmorillonite 1-5, tetrakismethylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate)methane 1.8-1.9.
EFFECT: obtaining products with high level of physical and mechanical characteristics.
SUBSTANCE: composition contains a cross-linked interpolymer containing one or more monomer links based on diene and cross-linked with a tetraalkoxysilane cross-linking agent. The cross-linked interpolymer (A) contains less than 30 ppm halide from the total weight of the cross-linked interpolymer and (B) molecular-weight distribution ranges from 2.0 to 2.4.
EFFECT: invention reduces corrosion and contamination of equipment.
15 cl, 2 dwg, 2 tbl, 4 ex
SUBSTANCE: invention relates to the rubber industry and can be used in making industrial rubber articles. The butadiene-methylstyrene rubber based rubber mixture contains sulphur, diphenyl guanidine, a vulcanisation accelerator, technical carbon, zinc oxide, stearic acid, an anti-ageing agent and a modifier. The vulcanisation accelerator used is sulphenamide Ts, the anti-ageing agent and modifier are 2-(dibutylaminomethyl)-4-methyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-exo-2-yl)phenol.
EFFECT: high building tack while maintaining high ageing resistance of the butadiene-methylstyrene rubber based rubber mixture.
3 tbl, 4 ex
SUBSTANCE: invention relates to high-strength composite polymer materials for deck and floor coatings. The composite polymer material, which is a rubber mixture processed by a moulding technique, contains a polymer matrix, a vulcanising system consisting of thiuram, altax, zinc oxide and stearic acid, filler and process additives. The polymer matrix used is a petrol-, oil- and ozone-resistant polymer which is modified with polyvinyl chloride and contains 26-34 wt % acrylonitrile, and additionally sulphur, sulphenamide and polymerised 2,2,4-trimethyl 1,2- dihydroquinoline. The filler consists of BS-100 silicon dioxide, pigment titanium dioxide, natural hydrophobic chalk in weight ratio of 35-115:4-20:5-50 pts.wt, respectively. The process additives include TGM-3 oligoester acrylate plasticiser and antipyrenes which contain antimony trioxide and zinc borate in ratio of 3-20:5-25, and N-cyclohexyl thiophthalimide.
EFFECT: invention enables to obtain high-strength petrol-, oil- and ozone-resistant floor coating with antistatic, fire-resistance and vibration-absorption properties.
2 cl, 2 tbl, 5 ex