Abrasive-resistant composition material
FIELD: polymeric materials.
SUBSTANCE: abrasive-resistant composition material is made of composition comprising the following ratio of components, wt.-%: functional additives, 40-45; thermoplastic modifying agent, 28.14-43.5; hardening agent, 1-2; epoxy resin E-41, E-41r, the balance. Mixture of thermoplastic chlorine-containing modifying agent - perchlorovinyl resin and thermoplastic polymer taken in the ratio = (1:0.5)-(1:0.005) is used as a thermoplastic modifying agent. Thermoplastic polymer is taken among the following group: polystyrene, acryl-butadiene-styrene plastic, polyamide, polyethylene, polypropylene, copolymer of ethylene and vinyl acetate. Invention provides enhancing the adhesion strength and stability to abrasive wearing, among them, in effect of sign-variable and impact loadings and vibrations. Invention can be used in machine engineering for making functional coverings preventing wear of articles, constructions or aggregates as result of effect of abrasive and corrosive media, impact loadings and vibrations.
EFFECT: improved and valuable properties of material.
2 tbl, 13 ex
The invention relates to the field of polymer materials, in particular composite materials on the basis of slivaushiesia resins intended for coating parts of machines, mechanisms and structures to prevent abrasive wear, corrosive environment and ensure the set of consumer characteristics of engineering products.
Modern machinery is widely used functional coatings for various parts, which reduce the coefficient of friction and wear during operation without lubrication [1, 2], increase the resistance to the abrasive action of the operating environment , protect from corrosive atmospheric conditions . The most widely coatings from powder dispersed media by spraying or dipping in a fluidized bed , coatings from solutions and melts of composite materials . As a polymer matrix in composite materials for coating the most widely polyamides(6, 66, 11, 12) [1, 2, 5], polyolefins, fluoropolymers, polyvinylchloride resin , epoxy, polyester, epoxy-ether, phenolaldehyde oligomers .
The typical structure of a composite material for functional coating includes: a polymer base and function of the national filler (dye, antioxidant, curing agent, an oxidation inhibitor, photoagent and others). The greatest distribution in mechanical engineering received 2 coating: a, according to which the coating is formed by melting the layer of composite material on the surface of the workpiece, and the mortar in which the coating is formed after removal of the technological environment (solvent and diluent) from the layer deposited onto the working surface in the form of a suspension using a spray, brush, roller, watering or dipping. Each technology has its advantages and disadvantages, and the choice of a specific technology for coating on the workpiece due to the item depending on your requirements of normative documents for output.
The most widely mortar technology of application of composite polymer coatings developed due to technological base, the simplicity of the technology of surface preparation and coating, the possibility of obtaining high-quality coatings in the formation without energy impacts, ensuring high-quality coatings intricate parts with odnotrahniki.
A known structure of a composite material based oligomer epoxy resin containing thermoplastic modifier compound and a functional additive, designed for applying coating to products made of metals and nonmetals to reduce the adverse effects of abrasive media, atmospheric and operational factors. This composition, called enamel, produced according to regulatory documents (specifications and process regulations) . The produced composite material has high consumer characteristics and meets the regulatory requirements of the international quality system ISO9001. Among the significant disadvantages of the known composite material is a low resistance to abrasive environments and alternating loads. The flow of abrasive particles in a gaseous or liquid environment causes rapid destruction of the coating due to its lack of elasticity, and alternating, shock loads and vibrations lead to delamination of the coating from the machined part.
Closest to the claimed is abrasion resistant composite material based on epoxy oligomer (e-41) in the amount of 10-15 parts by weight, containing 6,5-6,9 parts by weight of a thermoplastic chlorinated polymer is a polyvinyl chloride resin as a modifier of 0.4 to 1.0 parts by weight of utverditeli and 15-19,8 parts by weight of the functional additives. 
The objective of the invention is to provide abrasion resistant components the investment material based on epoxy oligomer with increased resistance to abrasive wear and adhesive strength, including when exposed to alternating and shock loads and vibrations.
The problem is solved in that in abrasion resistant composite material made of a composition comprising epoxy resin, perchlorovinyl resin as a thermoplastic chlorinated modifier, hardener and functional additives, as the epoxy resin composition contains epoxy oligomer e-41, e-R, as thermoplastic modifier further comprises a thermoplastic polymer selected from the group of polystyrene, acrylonitrilebutadienestyrene plastic, polyamide, polyethylene, polypropylene, a copolymer of ethylene and vinyl acetate, the ratio of thermoplastic chlorinated modifier to thermoplastic polymer is 1:0.5 to 1:0.005 to, the following ratio of components, wt.%:
|thermoplastic chlorinated modifier:|
|thermoplastic polymer is taken|
|the ratio of 1:0.5 to 1:0,005||28,14-43,5|
|epoxy oligomer e-41, e-R||rest|
The compositions abrasion resistant composite materials to the specific performance of the prototype and the invention is presented in the table. 1. To obtain abrasion resistant composite materials used epoxy resin grade e-R (TL6-10-607-78). As the chlorine-containing thermoplastic polymer used resin
|The compositions abrasion resistant composite materials|
|the placeholder||The inventive compositions||XI||XII|
|1. Epoxy oligomer|
|- resin e-R||-||-||-||-||-||-||-||-||-||27,0||-||-|
|2. Thermoplastic chlorinated modifier - resin PHS-HP||28,7||28,0||28,5||29,0||28,5||28,5||28,5||28,5||28,5||28,5||28,5||27,0||27,3|
|3. Funktsionalnyi supplements:|
|- salt metal||14,5||14,5||14,5||14,5||14,5||14,5||14,5||14,5||14,5||14,5||14.5||14,5||14,5|
|4. Thermoplastic polymer:|
|5. Hardener - hexamethylenediamine were||1||2||1,5||1||1,5||1,5||1,5||1,5||1,5||1,5||1,5||2,5||1,0|
|6. The ratio of thermoplastic chlorinated modifier: thermoplastic polymer||-||1:0,005||1:0,0175||1:0,5||1:0,0175||1:0,0175||1:0,0175||1:0,0175||1:0,0175||1:0,0175||1:0,0175||1:0,001||1:0,55|
PVC brand PHS-LS (OST6-01-37-88). As a functional add the in composition was injected pigments: titanium dioxide brand P-02 (OCT-84), chromium oxide (GOST 2912-72), technical grade carbon K-354, P-803 (GOST 7885-86), pigment blue phtalocyanines imported, pigment red iron oxide type K (TU 6-10-602-86), aluminum powder grade PAP-2 (GOST 5494-93), filler: micro-talc for paints and varnishes (GOST 19284-79), salt of the metal: zinc phosphate (TG 100-01087), strontium chronologicly (TU 38-4-23 9-82).
The combination of pigments is determined by the requirements of colours coating of a composite material. The filler is chosen based on the requirements for hardness. Salt of the metal provides the processes structuring binder. These components, in any combination with the claimed ratios do not have a fundamental influence on the characteristics of abrasion resistant composite material. As a hardener was used hexamethylenediamine were (compound No. 1) (GOST-10-1263-77). It is allowed to use any amine hardener (polyethylenepolyamine and others), which provides a sufficient rate of formation (curing) composite abrasion resistant material.
As thermoplastic polymer used powder products obtained by cryogenic grinding of industrially produced thermoplastics in the form of granules or crushed fragments - density polyethylene (HDPE), polypropylene (PP), polystyrene (PS), acrylamides rolnego plastic (ABS), polyamides (PA6, A11, A12), of a copolymer of ethylene and vinyl acetate (CMEA). Powders of polymers with size from 1 to 150 μm was obtained by cryogenic grinding of granules at a temperature of liquid nitrogen (or other suitable coolant).
For modification of the material used fraction with size not more than 40 μm, which corresponds to the milling degree of the semi-finished product.
Abrasion resistant composite material was obtained by the sequential components are mixed with a solution of a polymeric binder (epoxy and chlorinated polyvinyl chloride resin). Blending is done with the use of special technological equipment, dissolvers, ball and bead mills.
Coating of abrasion resistant composite material formed by the mortar technology, introducing the hardener at the last stage of receipt. After removal of the technological environment of the solvent and curing of the binder coating of abrasion resistant composite material was subjected to testing. Characteristics of the coatings of the developed material and the prototype was evaluated according to standard techniques. The hardness of the coatings was determined according to GOST 5233-84 "Materials paint. Method for determination of hardness by pendulum device". Resistance of coatings of the materials developed and the prototype to the abrasion resistance (abrasion) was determined by p the GOST 20811-75 "Materials paint. The method of determining the strength of the coating to abrasion". The essence of the method is exposed to the test sample stream of dry abrasive (sand). Resistance to wear is estimated by the amount of abrasive in kg, caused the destruction of the specimen.
The adhesion of the coating to the substrate was evaluated by the method of lattice cuts in points. The strength of the film at impact was determined by device Y-1. As the characteristic strength is the size in cm, corresponding to a fall height of the indenter on the floor without its destruction. The elasticity of the film when bending was evaluated on cylindrical samples of different diameters. As the characteristic elasticity served as the cylinder diameter, the bending which does not cause destruction of the sample. The resistance to static action of operational environments was determined by keeping the samples at a temperature of 20±2°With water, 3% solution of sodium chloride, gasoline and mineral oil And 20. The resistance of the composite material to the alternating stress was determined by the number of cycles of deformation of the sample coated (fold-regib flat).
Samples for testing according to the prior art and the claimed compositions were made by coating on plates of black iron GOST 13345-85 size 70×150 and thickness of 0.25-0.32 mm or of steel grades 08KP and 08PS graveyard 16523-97 size 70× 150 and a thickness of 0.8-1.0 mm General requirements on the sizes of samples for testing and the technology of their production meets the requirements of GOST 8832-76 "Materials paint. Methods of obtaining coatings for testing and GOST 9880.2-86 "Materials paint. Sampling for testing".
Comparative characteristics of the claimed compositions and prototype are presented in table. 2. As follows from the presented data, the claimed compositions abrasion resistant composite materials in the stated proportions of components (compounds I-X) provide a positive effect, is to increase the adhesion strength, resistance to abrasive wear and alternating loads.
A reduction in the content of the components and their optimal ratio or increasing the content ratio (compounds XI-XII) or dramatically reduces the effect or not leads to additional characteristics of the material. The claimed compositions for resistance to abrasive wear surpass the prototype in 9-10 times, resistance to alternating loads in 5-9 times, resistance to shock loads 10-20%, which emphasizes the importance of the stated characteristics.
The invention consists in the following. With the introduction of the epoxy matrix, forming when merging rigid structure, elastic thermoplastic to mponent reduced level of residual stresses, due to the processes of stitching, thereby increasing the adhesion strength, wear resistance and impact strength of the material. However, the presence of only chlorine
|Comparative characteristics of the claimed compositions and prototype.|
|Description||The indicator for composition|
|the placeholder||the inventive compositions||XI||XII|
|1. The adhesion points||1||1||1||1||1||1||1||1||1||1||1||1||2|
|2. The hardness of the material by pendulum device:|
|- type M-1||0,5||0,5||0,5||0,5||0,5||0,5||0,5||0,5||0,5||0,5||0,5||0,5||0,5|
|- type TMA-(A)||0,3||0,3||0,3||0,3||0,3||0,3||0,3||0,3||0,3||0,3||0,3||0,3||0,3|
|3. The strength of the material at the impact on unit U-1, cm||50||55||60||60||60||60||60||60||60||60||60||55||50|
|4. The elasticity of the material in bending, mm||1||1||1||1||1||1||1||1||1||1||1||1||1|
|5. Resistance to static action at a temperature of 20±2°, h|
|- 3 wt.% NaCl solution||24||24||24||24||24||24||24||24||24||24||24||24||24|
|- mineral oil||24||24||24||24||24||24||24||24||24||24||24||24||24|
|6. Resistance to abrasion resistance, kg/mm||0,25||1,5||2,5||2,0||1,3||1,3||1,7||1,7||1,8||1,8||2,3||0,5||2,0|
|7. Resistance to alternating loads, cycles||2||10||15||18||12||1215||15||16||16||18||3||10|
thermoplastic modifier (perchlorovinyl resin) may not provide optimal characteristics of the material, because the modifier due to the difference in specific gravities forms mainly the outer layer of the composite coating. With the introduction of the addition of dispersed particles of thermoplastic polymer is formed of a composite structure in which particles of modifier simultaneously perform the function of anti-wear additives, and a component that reduces the probability distribution of cracks by volume of the composite. Particles of thermoplastic modifier or swell in the technological environment (solvent and diluent), or partially dissolved. This contributes to the local modification of the coverage of the developed material by section and the formation of a strong adhesive bond at the interface "epoxy matrix polymer filler".
The formation of the coating is relatively small and amounts to no more than 3 hours at a temperature of 20±2°C. When this technological environment (solvent) is removed from the composition, providing only a partial dissolution (swell) particles of the polymer modifier. As a result, they have high thermodynamic compatibility with the Mat is itsey and retain its structural strength. Thus, the volume of the composite is formed by a spatial grid of particles of a polymeric modifier, providing a synergistic effect.
The composition abrasion resistant composite material intended for the manufacture of coatings on machine parts and mechanisms exploited when exposed to abrasive environments, adverse weather conditions, shock loads and vibration. A typical design of this type are the drive shafts of automobiles, agricultural machinery, railway and urban transport. Experimental-industrial production of abrasion resistant composite material for coating of drive shafts carried out at JSC "BelCard".
The sources of information.
1. RF patent 2228347, 2002.
2. RF patent 2219212, 2002.
3. Dovgalo VA, Yurkevich O.R. Composite materials and coatings based on dispersed polymer. - Minsk: Science and technology, 1992. - 256 S.
4. Yakovlev A.D. Powder paint. - Leningrad: Khimiya, 1984. - s.
5. Designing for Rilsan coatings ELF ATOCHEM, Paris, 1999. - p.18.
6. Enamel EP-1236. Technical conditions TU 6-10-2095-87. Developed NPAO "Spectrum" , Moscow (GIPI LKP, , Moscow).
7. RF patent 2233299, 2004.
Abrasion resistant composite material made of a composition comprising epoxy resin, perchlorovinyl resin as a thermoplastic harcode the containing modifier, the hardener and additives, characterized in that the epoxy resin composition contains epoxy oligomer e-41, e-R, as thermoplastic modifier further comprises a thermoplastic polymer selected from the group of polystyrene, acrylonitrilebutadienestyrene plastic, polyamide, polyethylene, polypropylene, a copolymer of ethylene and vinyl acetate, the ratio of thermoplastic chlorinated modifier to thermoplastic polymer is 1:0.5 to 1:0.005 to, the following ratio, wt.%:
|Thermoplastic chlorinated modifier:|
|thermoplastic polymer is taken|
|the ratio of 1:0.5 to 1:0,005||28,14-43,5|
|Epoxy oligomer e-41, e-R||Rest|
FIELD: varnish-and-paint industry.
SUBSTANCE: invention relates to lacquer materials for primer coating as well as independent coating. Water-dispersed lacquer composition includes acrylate-containing dispersion, pigments, including structure chromate and zinc phosphate at ratio 1:(10-50), polyurethane and cellulose and/or acrylic thickener, surfactant, coalescent additive, corrosion inhibitor, water, and fluorine-containing flow property-enhancing additive. Composition may further contain neutralizer, form suppressor, and antifreeze.
EFFECT: increased adhesion for aluminum and water resistance, speeded up drying under environmental conditions.
4 cl, 2 tbl, 7 ex
FIELD: polymers, in particular heat resistant anticorrosive coating composition.
SUBSTANCE: claimed composition contains (mass %) polyphenyl siloxane polymer 20-30; butylmethacrylate-methacrylic acid copolymet 4-8; heat resistant pigment 8-10; potassium alumosilicate 3-10; microreinforcing filler (wollastonite) 2.5-8; rheological additive 0.5-2.0 and balance: organic solvent.
EFFECT: heat resistant anticorrosive coats useful in protection of metal surface from elevated temperature and aggressive media.
SUBSTANCE: invention relates to a method for preparing abrasion-resistant protective polymeric composition. The composition comprises the following components, mas. p. p.: epoxydiane resin, 100; modifying agent, 30-60; organosilicon amine hardening agent, 10-20; scaly filling agent, 40-80; aerosil and/or microtalc, 10-20 as a finely divided filling agent. Resins ED-18, ED-20 and E-41 are used as epoxydiane resin. Low-molecular butadiene-nitrile rubber or polysulfide rubber, or acrylic resin is used as a modifying agent. Organosilicon amine hardening agent represents aminosilane or aminosiloxane that is used in common with polyethylene polyamine in their mass ratio = 1:1. The condensation product of polyethylene polyamine with trimerized fatty acid from flax or tall oil can be added to the hardening agent composition. Scaly silicon representing waste in manufacture of crystalline silicon for preparing organosilicon compounds is used as a scaly filling agent. Pigments can be added to the composition for coloring. Invention provides preparing the composition showing high adhesion to metals, for example, to steel and to concrete, high mechanical strength, elasticity, abrasion-resistance, atmosphere-resistance, resistance to hot water effect and longevity. Proposed polymeric composition can be used for protection of metallic and concrete constructions, for floor covering and so on.
EFFECT: improved and valuable properties of composition.
6 cl, 2 tbl, 13 ex
FIELD: chemical industry; production of polymeric compositions on the epoxy basis.
SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular, to production of polymeric compositions on the epoxy basis. The invention offers a composition for protection of internal surfaces of fuel tanks-caissons of aircrafts made out of aluminum alloys against corrosion at the long-term usage in a fuel medium and it also may be applied to protect interior and exterior surfaces of means of transport and structures made out of magnesia alloys and steel. The offered composition for application as a metal coating contains: in the capacity of a polymeric binding - epoxydianil resin or epoxyorganosilicon resin; in the capacity of a modifying agent - polysulfide or butadieneacryl nitrile carboxylated rubber; as a hardener - organosilicone amine - γ-aminopropyltriethoxy silane, 1-amino hexamethylene -6- hexamethylenetriethoxy silane or a condensation product of γ-aminopropyltriethoxy silane, a mineral filler - barium sulfate, aerosil, talcum, titanium dioxide or their mixes; in the capacity of abscopal pigments - strontium chromate, barium chromate, chromium phosphate or their mixes; organic solvent - xylene, acetone, butyl acetate, ethyl cellosolve or their mixes at the following components ratio(in mass shares): polymeric binding - 100, modifying agent - 9-50, a hardener - 5-80, a mineral filler - 25-105, inhibiting pigments - 30-140, organic solvent - 5-200. The offered composition allows to produce a fuel and a water-resistant coating with high adhesive and physical-mechanical characteristics, fungi-resistant, protective features ensuring at small thickness (a small weight of the coating) the long-term protection of the fuel tanks-caissons, which are operating in the liquid hostile environments at the temperature difference from-60°C up to (+100-150)°C.
EFFECT: the invention ensures production of a fuel and a water-resistant coating with the high adhesive and physical-mechanical characteristics, fungi-resistant, protective features.
4 cl, 12 ex, 3 tbl
FIELD: paint and varnish industry.
SUBSTANCE: invention relates to rust modifying agents that are used for applying on corroded metal surfaces. The described anticorrosive modifying coating comprises the following components, weight %: acrylic dispersion "Diakam-11" as a film-forming agent, 36.0-48.0; graphite GE-3 as a pigment and filling agent, 14.0-23.0; 8-oxyquinoline as a chelating agent, 0.5-1.8; ortho-phosphoric acid as a modifying additive, 25.0-35.0; polyethylsiloxane liquid PES-5, 5.0-10.0; accessory agent OP-10, 0.2-0.5, and concrepol AD-1 based on poly-N-vinylpyrrolidone aqueous solution, 0.5-1.5. Invention provides the possibility for effective conversion of rust to neutral undercoat, prolonged exploitation time being both in corrosive and water-saturated media and under conditions of open atmosphere in the range of temperatures from -70°C to +200°C and without additional overcoating with paint and varnish materials and without applying on mazut-coated and oiled metallic surfaces without their degreasing.
EFFECT: improved and valuable properties of coating.
FIELD: paint and varnish materials.
SUBSTANCE: invention relates to priming aqueous-dispersion compositions designated for protection metallic surfaces against corrosion in exploitation both under atmosphere conditions and subjected for effect of different liquids. Invention proposes anti-corrosive aqueous-dispersion priming-enamel comprising the following components, wt.-%: styrene-acrylic dispersion as a binding agent, 30-50; calcium molybdate phosphate as an anti-corrosive pigment in the following ratio of molybdate and phosphate ions from 1:0.01 to 1:100; color-forming pigment, 1-10; phosphate dispersing agent, 0.1-10; thickening agent, 0.05-0.2, and water, the balance. Applying calcium molybdate phosphate in priming-enamels provides the passivating activity in interaction 0f phosphate-molybdate ions with metallic backing of both ferrous and nonferrous metals and exhibits the additional protecting effect.
EFFECT: improved and valuable properties of compositions.
FIELD: polymeric protective coatings.
SUBSTANCE: invention relates to compositions forming anticorrosive coatings on reinforced concrete, concrete, and bricks and which, in particular, can be employed for anticorrosive protection of concrete floors, large-size metallic containers, pipelines, brick basements, bottoms, cattle-breeding farms, open-type swimming pools, and also air conduits, piping, and other metallic structures in industrial buildings, and near production enterprises producing corrosive emissions into atmosphere. Coating according to invention is composed by copolymer obtained via copolymerization of vinyl ether with methyl methacrylate at weight ratio (3-6):1 in presence of azo-bis-isobutyronitrile followed by dissolution of copolymer in toluene. Vaporization of the latter leaves film protecting surface from destruction.
EFFECT: enhanced protection efficiency.
FIELD: metal-protecting materials.
SUBSTANCE: invention relates to protection of metals against corrosion using paint and varnish coatings. Invention proposes using as anticorrosive pigments co-precipitated manganite-phosphates, manganite-silicates, manganite-sulfates of metals of the general formula: MMnOxnMZ wherein M means Ca2+, Zn2+, Fe2+, Sr2+ at Z - PO4 3-, SiO3 2-, and M means Ba2+ at Z - SO4 2-, PO4 3-, SiO3 2-; x = 2.5-3; n = 0.5-10 with the content of co-precipitated manganite of corresponding metal from 5 to 70 wt.-% as anticorrosive pigments. Proposed pigments by their anticorrosive properties exceed that of zinc tetraoxychromate. Invention provides applying low toxic anticorrosive pigment-inhibitors with protective properties comparable with that of chromate pigments.
EFFECT: expanded assortment of anticorrosive pigments.
FIELD: composition materials.
SUBSTANCE: invention relates to a method for preparing the composition cover that can be used for recovery worn out article surfaces working under conditions of high compression loadings, bearing surface of lateral framework in loading truck car in zone of slipping aperture. Method involves mixing the polymerizing epoxy composition and metallic dispersed filling agent in the ratio = (1:6)-(1:9) mas. p. p. Mixing is carried out at effect in increasing pressure in auger mixer with alternate step being each the following auger step differs from previous step by the constant value. Then the prepared composition is applied on metallic surface and kept its at the polymerization temperature up to finishing the solidification process. Composition based on epoxy resin ED-16, ED-20 with latent hardening agent dicyandiamide is used as epoxy composition. Iron powder PZH-4, iron-base powder PS 27-M, iron-base PG-USCH-35, nickel-base powder PG-SP2-M are used as a metallic dispersed filling agent. Invention provides enhancing the specific compression loading value.
EFFECT: improved method for preparing, valuable properties of cover.
5 cl, 1 tbl, 1 dwg, 6 ex
FIELD: building materials.
SUBSTANCE: invention relates to a method for preparing compositions used for covers, among them to corrosion-water-fuel-resistant covers by nonferrous metals, concrete and ceramics in moisture and aggressive media. The composition comprises the following mass ratio of the parent components, %: film-forming mixture comprising oligomeric carboxyl-containing butadiene-nitrile rubber, 10.9-28.1 and epoxy-diane oligomer, 7.0-10.9 in the mass ratio of epoxy-diane oligomer and rubber from 19.9:80.1 to 50.0:50.0; hardening agent, 5.9-18.1; solvent, 41.0-51.1; filling agent, 1.4-1.6, and pigment, 13.6-16.4. Film-forming agent is heated preliminary at temperature 90-120°C to the conversion degree of carboxyl groups 8.8-25.2%. Mixture of γ- and β-aminopropyltriethoxysilanes is used as a hardening agent in the mass ratio = (67-75):(25-33), or 45-55% solutions of products of hydrolytic condensation of mixture of γ- and β-aminopropyltriethoxysilanes in cyclohexanone or toluene. Invention provides enhancing the strength of cover in direct/reverse impact, adhesion in moisture media, resistance to defoliation in storage and bending, to reduce swelling capacity in water.
EFFECT: improved, enhanced and valuable properties of composition.
2 tbl, 4 ex
FIELD: building materials.
SUBSTANCE: invention relates to a method for preparing the coating composition based on modified epoxy resin used in protection of building constructions, for example, as a component for pouring floorings. The composition comprises the following ratio of components, wt.-%: epoxy diane resin, 55.0-63.0; amine hardening agent as a mixture of isophoronediamine, 13.0-20.3, and one of amine taken among methaxilylenediamine, 7.0-9.0, or diethylenetriamine, 5.0-6.0, or triethylenetetraamine, 5.5-6.5 and tris-(dimethylaminomethyl)phenol, 2.0-2.7, as adduct with laprolat-803, 6.5-10.5, and mixture of dioxane alcohols and their high-molecular esters (EDOS). Laprolat-803 represents polyoxypropylenetriol tricyclocarbonate propyl ester. Invention provides hardness and wear-resistance of coating.
EFFECT: improved and valuable properties of composition.
2 tbl, 7 ex