SUBSTANCE: composition includes, wt. p.: epoxy diane resin 100.0, hardener - polyethyleneamine 15.0, filler - cross-linked polyacrylamide POLYSWELL in form of granules, preliminarily swollen in water, in weight ratio 1:10 5.0-20.0.
EFFECT: increased fire resistance of composites based on epoxy diane resin.
The invention relates to the field of production of fire-resistant compositions based on polymeric binder and can be used for the production of parts and products in electrical, electronics and other industries.
Known flame-retardant composition containing epoxy Dianova resin, polyethylenepolyamine, low molecular weight polybutadiene rubber, trichlorethene, chloroparaffin, the chlorohydrin ether of tetrabromphenol, α-ferrocene and mineral filler (USSR Author's certificate 1543196, C08D L63/02; Publ. 1990).
However, the composition mnogokomponentnye, which complicates the process of cooking. Fireproof is the role of chlorine-containing compounds, which manifests itself in the gas phase. Thus, the formation of volatile halogenated toxic products.
Known flame-retardant composition comprising epoxy Dianova resin, the plasticizer is dibutyl phthalate, hardener - polyethylenepolyamine, filler - product of the interaction of magnesium hydroxide and dimethylphosphite, phosphorus (16,1-24,1%) (U.S. Pat. 2056444 Russia, C08L 63/02, C08K 13/02; Publ. 20.03.1996).
However, this composition is intended for processing of glass.
Closest to the invention by the technical nature of a flame retardant composition comprising epoxy Dianova resin, the plasticizer is dibutyl phthalate, hardener - polyethylenepolyamine, filler - product of the interaction of aluminum hydroxide and dimethylphosphite, phosphorus (6,4% and 19.4%). (U.S. Pat. 2056445 Russia, C08L 63/02, C08K 13/02; Publ. 20.03.1996).
However, this composition is intended for processing of glass.
Objective: to obtain a flame-retardant composition based on epoxy resin.
The technical result is to provide high resistance of the composition.
The technical result is achieved in that the flame-retardant composition for electric and electronic products containing epoxy Dianova resin, hardener - polyethylenepolyamine, filler, with composition as the filler contains cross-linked polyacrylamide POLYSWELL in the form of granules, pre-swollen in water in a mass ratio of 1:10, with the following ratio of components, wt.h.: epoxy Dianova resin - 100,0, polyethylenepolyamine - 15,0 specified filler - 5,0-20,0.
Epoxy Dianova resin brand ED-20 is the main binder in the composition (GOST 10587-84). The polyethylenepolyamine is a hardener of epoxy compositions (TU 6-02-594-75).
Cross-linked polyacrylamide POLYSWELL - granules of white, well-swelling in water, with a density of 0.8-1.0 g/cm3. Used to control lost circulation of drilling mud (http://www.globaldrillchem.com/products/index/polyacrylamide-lcm_3951.html).
In ka is este filler used cross-linked polyacrylamide POLYSWELL in the form of granules, pre-swollen in water in a mass ratio of 1:10.
To prepare the filling in a beaker load 1 mass.h. cross-linked polyacrylamide POLYSWELL in the form of granules and 10.0 mass.h. water, stirred until a homogeneous mass. Then aged at room temperature 23 °C for 20 minutes.
The presence of the filler - crosslinked polyacrylamide POLYSWELL water fireproof compositions based on epoxy Dianova resin. When exposed to a flame there is a kind of small explosions and injection of water into the flame zone, which leads to slower combustion by absorbing a significant amount of heat.
This composition allows to obtain composites based on epoxy Dianova resin with high resistance. Use 5-20 wt.h. filler is best. With the increasing content of the filler decreases the uniformity of the filler in the composition and increases the curing time, which creates technological difficulties in the manufacture of epoxy composite.
The use of lower filler content leads to decrease in resistance.
Fire-retardant composition is prepared as follows.
Epoxy Dianova resin and hardener - polyethylenepolyamine is loaded into the vessel and stirred for 5-10 minutes. Then is the introduction of crosslinked p is lucillia POLYSWELL, pre-swollen in water. Total cooking time is 20 minutes.
The invention is illustrated by the following example.
In a vessel containing epoxy Dianova resin and hardener - polyethylenepolyamine, introducing cross-linked polyacrylamide POLYSWELL, pre-swollen in water, and stirred the contents for 10-15 minutes until the mixture is homogeneous, we then conducted a curing composition for 24 hours at ambient temperature of 23 °C.
For the comparative tests was prepared 4 types of compositions (according to the method described in the example) and the composition of control example, formulations which are presented in table. 1.
The composition is a viscous liquid beige color.
Have been investigated by various content of cross-linked polyacrylamide POLYSWELL, pre-swollen in water. The research results are summarized in table 2.
The stated limits of cross-linked polyacrylamide is because when you increase these doses reduced the uniform distribution of the filler in the composition and increases the curing time, and when the reduction - reduces the resistance.
Comparative tests on all variants of the claimed compositions and example are given in table.2.
The proposed compositions were tested for Flammability in accordance with GOST 28157-89 method OC the NCI speed horizontal flame spread over the surface.
Water absorption was evaluated in accordance with GOST 4650-65.
The proposed compositions provide a significant increase in fire resistance and water resistance as compared with the control example. Thus, the linear speed of combustion of the test sample is 18 mm/min, and using the specified filler - 3 mm/min.
To determine the efficiency of the developed flame retardant compositions were tested by exposing the sample to a source of ignition. Installation for testing are collected on the basis of laboratory chemical tripod and installed in a well ventilated area. Samples for measurements have the following dimensions: diameter 50 mm, thickness 5 mm Prepared for the test sample is secured on the tripod vertically. Use universal gas Bunsen burner, equipped with a nozzle with a hole diameter of 7 mm Gas burner (using gas), which is in a horizontal position at a distance of not less than 200 mm from the sample, light and adjusted so that the height of the flame was 150-180 mm Flame send in the exact center of the fixed sample. Air supply adjust until then, until there is no longer a yellow tip flame.
Temperature measurements are performed by the device - pyrometer-300.3 (GOST 28243-96 "Thermometers. General technical requirements"). The principle of operation is isometry based on the power measurement of thermal radiation of the measurement object predominantly in the range of infrared radiation and visible light.
Using thermometer to register the temperature change on the unheated surface of the test sample over time until reaching the limiting state of the prototype. For the limit state of the material was taken the appearance of black spots on the unheated side of a prototype - loss of integrity of the material.
|Component||Test case||The content of the component masses.h., the composition of|
|Epoxy Dianova resin||100,0||100,0||100,0||100,0||100,0|
|The specified filler||-||5,0||10,0||15,0||20,0|
Table 2 shows that the proposed compositions are more resistance. For example, the time to reach the ultimate state of prototypes increases 2.5 times.
|Test||The indicator for the composition|
|The speed of horizontal flame spread, mm/min||18,0||15,0||6,0||5,0||3,0|
|Water absorption, %||0,41||0,33||0,24||0,28||0,28|
|The time to reach the ultimate state,||15,0||35,0||50,0||50,0||50,0|
|Temperature neologismo the side of the substrate through 25, °C||The sample is destroyed||33,0||28,0||24,0||20,0|
Thus, the introduction into the composition of cross-linked polyacrylamide POLYSWELL in the form of granules, pre-swollen in water, provides a high resistance to fire.
Technical and economic effect obtained from the use of this composition, is that it enables to improve the fire resistance of epoxy composites.
Fire-resistant composition for electric and electronic products containing epoxy Dianova resin, hardener - polyethylenepolyamine, filler, characterized in that the composition as a filler contains cross-linked polyacrylamide POLYSWELL in the form of granules, pre-swollen in water in a mass ratio of 1:10, in the following ratio, wt.h.:
Epoxy Dianova resin - 100,0
The polyethylenepolyamine - 15,0
The specified filler - 5,0-20,0.
SUBSTANCE: invention relates to fire-resistant compositions of polyamide resin. Claimed is a fire-resistant composition of the polyamide resin, including a polyamide (A), which contains a unit, representing diamine and containing not less than 70 mol% of a unit, representing p-xylylenediamine, and a unit, representing dicarboxylic acid and containing not less than 70 mol% of a unit, representing a linear aliphatic dicarboxylic acid, which has from 6 to 18 carbon atoms; an organohalogen compound (B), which serves as fire-protective means; an inorganic compound (C), which serves as auxiliary fire-protective means; and an inorganic filling agent (D), where the polyamide (A) includes a polyamide, which has the concentration of phosphorus atoms, constituting from 50 to 1000 ppm, and a value YI, which by results of differential colorimetric analysis in accordance with JIS-K-7105, does not exceed 10, and the content of the organohalogen compound (B), the content of the inorganic compound (C) and the content of the inorganic filling agent (D) constitutes from 1 to 100 wt.p. from 0.5 to 50 wt.p. and from 0 to 100 wt.p., respectively, counted per 100 wt.p. of the polyamide (A). Also claimed is the moulded product from the said composition.
EFFECT: composition has excellent mouldability, mechanical properties, heat resistance and low water absorption.
15 cl, 4 tbl, 21 ex
SUBSTANCE: invention relates to fire-resistant thermoplastic compositions, preferably thermoplastic polyurethane (TPU) compositions used when high fire-resistance is desirable, e.g., for wire and cable applications. The composition contains: (a) a thermoplastic polyurethane polymer, (b) a flame retardant and (c) polysiloxane which is modified by adding, preferably at the end of the chain, functional groups such as vinyl, methacrylic and/or epoxy groups. The polysiloxane is present in amount of 0.25 to 0.75 wt % with respect to the total weight of the composition. The composition is used as heat-insulating material for electrical conductors or as electrical conductor sheathing in wire and cable design.
EFFECT: mixture does not drip in case of fire and has very high heat resistance.
12 cl, 1 tbl, 1 ex
SUBSTANCE: invention relates to phosphorus-containing fire retardants, particularly, but not exclusively, for glass-filled polyamide resins. A fire-resistant polymer composition contains a main polymer (A), where the main polymer (A) includes a glass-filled polyamide, and a benzyl-substituted organophosphorus compound (B). The organophosphorus compound (B) is present in amount of about 10 wt % to about 30 wt % with respect to the amount of the fire-resistant polymer composition.
EFFECT: said organophosphorus compounds, especially if coupled with specific synergists, are effective fire retardants for thermoplastic polymers, including polyamides, especially glass-filled polyamides.
14 cl, 4 tbl, 10 ex
SUBSTANCE: composition contains polyolefin, magnesium or aluminium hydroxide or their mixture and carbon in the form of graphite nanoplates. A ratio of the components is as follows, wt %: polyolefin - 60-85, magnesium or aluminium hydroxide or their mixture - 10-20, graphite nanoplates - 5-20.
EFFECT: obtaining polyolefin-based materials, characterised by the reduced combustibility and possessing a complex of physical and mechanical properties.
4 dwg, 3 tbl
SUBSTANCE: composition comprises liquid low-molecular siloxane rubber, ethylsilicate-40 or tetraethoxysilane as a curing agent, alkoxytitranium borate and vanadium pentoxide. Components are in the following ratio, pts.wt: liquid low-molecular siloxane rubber - 100, ethylsilicate-40 or tetraethoxysilane - 10-30, alkoxytitranium borate - 10-30, vanadium pentoxide - 10-20.
EFFECT: high water-resistance, wear-resistance and fire-resistance of the coating.
2 cl, 1 tbl
SUBSTANCE: invention relates to elaboration of a fireproof decorative-finishing material - artificial leather, obtained by coagulation of a solution based on a polyurethane composition. The decorative-finishing material contains a woven layer, preliminarily impregnated with an aqueous silicone emulsion and dried to the weight gain of the latter of 3.0-8.5 wt %, on which, after that, a primer and a front layer are successively applied with intermediate drying. The primer layer is made of a composition, which contains 25% solution of polyurethane "Vitur 0512", dimethyl formamide with a viscosity of 120-170 P and a dry residue 18.0-22.0 wt % for the primer layer. The front layer is made of a composition, containing 15% solution of polyurethane "Vitur 0512", a surface-active substance OP-10, di-(2-ethylhexyl)-phthalate, ammonium polyphosphate, dimethylformamide with a viscosity of 205-210 P and a dry residue 26.0-27.0 wt % for the front layer. Front layers are coagulated in a coagulation bath with a composition of 30.0 wt % of dimethylformamide and 70.0 wt % of water at a temperature of 50°C for 20 min, washed in a bath with flowing water until content of dimethylformamide is less than 3.0%, dried and finished with a polyurethane composition, containing 25% solution of polyurethane "Vitur 0512", the surface-active substance OP-10, di-(2-ethylhexyl)-phthalate, ammonium polyphosphate, dimethylformamide with a viscosity of 84 P and a dry residue 24.5 wt %. After that, the half-finished product is processed in a padding bath with compression rolls at a temperature of 60°C with an aqueous solution of a mixture of polyphosphoric acids and urea with a ratio of nitrogen and phosphorus respectively 1.0:1.56-1.80 and drying for 4 min at a temperature of 120°C until the weight gain is 20.0-25.0 wt %. The obtained finished material has a ratio of layers by weight, equal: woven layer, including 3.0-8.5 wt % of the silicone emulsion: polyurethane layers: the said mixture of polyphosphoric acids and urea respectively 1.0:0.85-0.93:0.37-0.48.
EFFECT: obtained fireproof decorative-finishing material has high hygienic parameters and fire resistance by GOST 25076-81 - 0 mm/s, time of smouldering - 3-4 s.
2 cl, 4 tbl, 7 ex
SUBSTANCE: invention relates to construction materials, namely to field of fireproof materials, and is intended for application of fireproof coating on single cable, bundle of cables or cable lines in construction of different buildings and constructions for ensuring nonproliferation of flame on cable surface. Fireproof composition includes, in wt %: melamine - 10.5-25, ammonium polyphosphate - 10-30, titanium dioxide - 0.5-7, pentaerythritol - 10-17, dispersion of vinylacetethylene - 10-50, plasticiser - 0.5-5, ethylene glycol - 0.5-5 to reduce minimal temperature of film formation, paraffin-based foam extinguisher - 0.1-1, hydroxyethylcellulose - 0.1-0.8, as structure-forming agent and reological additive and water - the remaining part. Coating based on obtained fireproof composition does not require reduction of current loading, does not crack and does not impair adhesion to surface in the process of exploitation.
EFFECT: invention can be used in residential and industrial buildings.
SUBSTANCE: composition contains low-molecular siloxane caoutchouc, ethylsilicate-40, octaphenyltetraasaporphyrinatocobalt(II) or octaphenyltetrapyrazinoporphyrazinatocobalt(II).
EFFECT: increase of covering stability to abrasion and its water-resistance.
SUBSTANCE: fire-resistant moulding compound contains: A) 50-98.9 wt % of at least one (meth)acrylate (co)polymer with viscosity in solution (VZ) of 60-100 ml/g; B) 0.1-49 wt % of at least one (meth)acrylate (co)polymer with viscosity in solution (VZ) of 10-50 ml/g and C) C) 0.1-30 wt % of at least one organophosphorus compound.
EFFECT: invention increases inflammability during glow-wire test while adding a small amount of an organophosphorus compound.
12 cl, 1 tbl, 3 ex
FIELD: process engineering.
SUBSTANCE: invention relates to binder for fiber-glass material based on polyester resin used for making thin-wall window frame. Proposed binder comprises polyester resin based on isophthalic acid, filler - a fire retardant in the form of nanopowder based on aragonite sand with crystal size of 30-100 nm, hardening accelerator, hardening initiator and inhibitor. Said filler is modified by mechanical surface activation with further processing by organotitanates. The latter are used in amount of 0.004-4.0 wt %.
EFFECT: better physical and mechanical properties, particularly impact and fire resistance.
15 cl, 3 tbl, 3 ex
SUBSTANCE: method includes step-by-step hardening of liquid phenolformaldehyde resin of resol type in heating in the interval of temperatures from 80°C to 200°C with successive realisation of polycondensation and polymer cross-linking reactions, operations of crushing, milling, drying and sieving of obtained product to obtain particles with size not more than 0.18 mm. In the process of hardening in order to create optimal conditions for polycondensation reaction, accompanied by product foaming, after temperature 120°C is reached, process of heating is accelerated to rate 1°C/min, and process of polymer cross-linking is realised at temperature higher than 150°C under conditions of reduction of heating rate to 0.5-0.2°C/min.
EFFECT: obtaining product with sufficient level of thermal stability, ability to coke-formation, providing thermo-erosion stability of armour jacket under conditions of high temperatures and intensive erosion carryover under action of gas dynamic flow of fuel combustion products, absence of porosity in formation of armour jacket components.
4 cl, 3 dwg, 4 tbl
SUBSTANCE: invention relates to polymer construction materials of a reduced fire hazard, which do not support burning, applied for sealing and waterproofing of walls, roofing, foundation, basements, swimming-pools, and reservoirs for storing fuel at petrol stations. A waterproofing composition includes a rubber dispersion - latex SKD-1C, additionally contains (co)polymers "Akremos 101" and "Akremos 106" and functional additives - decabromodiphenyloxide, aluminium hydroxide, hexabromocyclododecane, butyldiglycol acetate, pigment titanium dioxide, zinc orthophosphate.
EFFECT: composition possesses fire-resistance, anticorrosion properties, improved physical-mechanical and adhesive properties.
2 tbl, 5 ex
SUBSTANCE: composition includes hollow aluminosilicate or corundum microspheres, binder in the form of aluminophosphate with free aluminium oxide content of less than 4 wt %, and water with the following ratio of components, wt %: aluminosilicate or corundum microspheres - 45-65, aluminophosphate - 35-55, water - the balance. The microspheres used have internal diameter of 6-250 mcm and wall thickness of 1-10 mcm. The invention also relates to a heat-protective coating which consists of at least two layers on a base, the first of which is the undercoat, and the second layer is made of said composition, wherein the composition for the first layer further includes C45-C60 fullerenes in amount of 0.001-0.002 wt %.
EFFECT: obtaining a durable coating with high operating temperature.
9 cl, 3 tbl, 6 ex
SUBSTANCE: invention relates to compositions for obtaining thermal barrier coatings, which can be applied for an external thermal protection of elements of spacecraft constructions, as well as in construction and aircraft. A composition of the thermal barrier coatings contains dry re-dispersible latex based on copolymers of vinylacetate and ethylene or vinylacetate and vinylversalate as an organic binding agent and a group of filling agents, including vermiculite with the bulk density 95-110 kg/m3 and an average size of particles 1 mm, perlite with the bulk density not more than 100 kg/m3, kaolin, glass microspheres with dimensions 15-200 mcm and the bulk density 240-320 kg/m3 and a fibrous material.
EFFECT: invention provides thermal protection of metal and non-metal constructions against high-temperature rapid aerodynamic heating.
4 cl, 1 tbl
SUBSTANCE: fire-protecting composition for covering glass-reinforced plastics includes perchlorovinyl resin, as organic solvent, mixture of butylacetate and acetone in ratio 1:1, as expansion agent, phosphorus-boron-nitrogen-containing oligomer, preliminarily obtained as a result of interaction of methylphosphite borate, epoxy resin ED-20 and aniline in weight ratio 2.5:1:2.5.
EFFECT: invention makes it possible to provide high fire protection for glass-reinforced plastic coatings.
SUBSTANCE: invention relates to intumescent compositions which are curable at ambient temperature, use thereof to protect structures, and substrates coated with said composition. The intumescent composition contains A) binder, containing (i) a resin which contains a polysiloxane chain or a precursor of said chain, and (ii) optionally an organic resin, and (iii) at least one type of a functional group selected from a group comprising epoxy resin, an amino group, a mercaptan group, a carboxylic acid group, an acrylonitrile group, an isocyanate group, an alkoxysilyl group and an anhydride group, wherein said functional groups are present either as side and/or terminal groups in said resin, which includes a polysiloxane chain or a precursor of said chain, and/or an organic resin, under the condition that if the binder contains alkoxysilyl groups only as one type of said functional groups, then said alkoxysilyl groups are present in the organic resin, B) a compound capable of reacting with or which is a catalyst in the reaction between functional groups and C) a foaming agent and a phosphorus-containing substance as a carbon-forming secondary additive.
EFFECT: obtaining intumescent compositions.
12 cl, 5 tbl
SUBSTANCE: invention relates to fire-resistant, thermal-protective coatings for different types of surfaces of different shapes which require thermal- and fire-protection, used in different industries as fire-proof, thermal-protective coatings for pipelines of heating systems, boilers and other thermal equipment, for coating equipment in order to protect personnel from contact burns from hot and cold metal surfaces, for cooling equipment used in facilities with unfavourable humidity and temperature conditions as an anti-condensate and anti-corrosion coating, for external heat-insulation of buildings and structures and internal treatment of buildings in order to prevent freezing and dampness of walls. The fire-resistant, thermal-protective coating is made from a composition which includes an acrylic dispersion, filler - closed non-combustible hollow glass microspheres with size or 20-200 mcm, which are free-flowing powders with packed density of 0.18-0.30 g/cm3, kaolin, zinc borate, inorganic binder which is a composition of liquid sodium glass and nano-size silicon hydroxide modified with sodium aluminate, auxiliary components - titanium dioxide, pearlite, aluminium hydroxide, functional additives - decabromodiphenyl oxide, plasticiser S-3, curing agent - sodium silicofluoride and water.
EFFECT: obtaining a thermal-protective coating which is non-combustible, heat-resistant, with high adhesion to metal, concrete plastered and brick surfaces, improved environmental properties and improved technology of obtaining the coating.
2 tbl, 6 ex
SUBSTANCE: invention relates to building materials and can be used in applying fire-retardant coatings on building structures. The fire-retardant composition in form of a water-tempered dry mixture for applying coatings is characterised by that it contains, wt %: portland cement 20.0-60.0, expanded vermiculite 10.0-40.0, chrysotile asbestos 5.0-25.0, chamotte 5.0-25.0, expanded pearlite 10.0-30.0, polyfunctional concrete modifier 0.1-1.0, fine water-soluble adhesive 2.0-8.0 and a water-retaining additive 0.1-3.0.
EFFECT: improved crack resistance owing to strain redistribution on the whole material.
SUBSTANCE: invention relates to the chemical industry, namely to fire protective varnish and paint materials for protection of different structures and materials, for instance, wood, metal surfaces, and can be used, for instance, in construction, aviation, railway transport. An intumescent fire-retardant paint contains, wt %: a redispersible polymer binding agent 8-12, a carbonising substance - polyol 10-20, a foaming agent 10-20, a latent source of an organic acid 20-40, a pigment 4-7, a filling agent 8-10 and a thickening agent 0.1-0.5. Before application dry components of paint are mixed with water.
EFFECT: invention is aimed at increase of fire protective properties of paint and strength of cohesion with a protected surface, with simultaneous provision of transport costs reduction, simplicity of application and effectiveness of use, as well as extends the range and arsenal of application.
SUBSTANCE: invention relates to elastomeric body suitable to be used in anti-vibration appliances and suspensions. Elastomeric body (1) has at least one layer of elastic and flexible flame-retardant coating covering part of the body (1). At least one layer of flame-retardant coating is non-halogenated and contains flame-retardant substance and elastic binding substance. Flame-retardant substance of one layer contains expandable graphite. Elasticity of at least one layer of coating exceeds 20%.
EFFECT: invention permits to improve fire resisting properties, to lower smoke formation and toxicity when elastomeric bodies are used in land vehicle, floating vessel, fixed equipment.
21 cl, 13 dwg, 2 tbl
SUBSTANCE: according to the first invention, an epoxide composition contains diane epoxy and an amine hardener. The above amine hardener in the composition is presented by a reaction product of polyaminoalkylphenol of formula (1) wherein n is equal to 1-7, and cyclocarbonate containing cyclocarbonate groups 18.67-25.00 wt %, epoxy oxygen 0.13-1.38 wt %, hydroxyl number 11.4-12.5 mgCoH/g on the basis of oxidised rape oil containing epoxy oxygen 5.75-6.22 wt %, hydroxyl number 13.6-14.6 mgCoH/g, iodine number 3.7-12.3 g I2/100 g. According to the second version, the epoxide composition contains diane epoxy, cyclocarbonate and an amide hardener. Cyclocarbonate in the composition is presented by above cyclocarbonate on the basis of oxidised rape oil. The above amine hardener is presented by above polyaminoalkylphenol of formula (1).
EFFECT: reducing viscosity of the epoxidic composition, prolonging its gelatination for using the composition on greater surfaces, increasing specific impact strength, breaking strength and adhesion strength.
2 cl, 4 tbl, 16 ex