(57) Abstract:Coating composition for protecting metal structures, pipes welded seams. The composition contains as a plasticizer of the polyurethane foam in combination with carbon filler and binder. This provides good adhesion to the surface of 3.1 MPa, high density and strength (tensile strength 312 kg/cm2), stability in water and corrosive fluids and heat. table 1. The invention relates to the field of inorganic chemistry and relates to compositions used in the corrosion protection of metal structures, pipes, welds, tanks for technical water, heating systems, etc.Known carbon-containing composition including powdered carbon black or graphite, binder is a polyurethane obtained by the reaction of a complex of the polyester with the monofunctional isocyanate, blocked multifunctional isocyanate and solvent .The disadvantages of the known compositions are the complexity of the preparation due to the complexities of composition, low physical and mechanical characteristics of the resulting coating, and the complexity of its application, because it requires demolisten composition to obtain a multilayer coating on concrete products, consisting of a primer based on an aqueous emulsion of a mixture containing 58.8 to 90,9 wt. %, binder, such as epoxy resin, and 9.1 - 41,2 wt.% graphite .The disadvantages of the known composition are necessary to pre-prepare the surface by cleaning and priming, as well as low mechanical and corrosion properties of the obtained coatings.Known adhesive to obtain a corrosion-resistant products containing 7-10 wt. % graphite, 22-31 wt.% a binder, such as epoxy resin, 28-46% wt.% liquid rubber with a curing agent .The disadvantages of the known adhesives are complex technology of its application because of the need for subsequent curing, as well as the impossibility of using it for cover, as he has poor ductility and low physical-mechanical characteristics.Also known anticorrosive composition for coating with good flexibility and chemical resistance to protect pipelines containing epoxy resin (binder), coal tar (plasticizer), the solvent and the carbon filler (graphite) .The disadvantage of this composition is the complexity and difficulty sonetos. This coating composition is less chemo - and heat-resistant, which leads to the reduction of physical-mechanical or corrosion properties.The objective of the invention is to create a simple composition and method of application to protect the surface, simultaneously with high physical-mechanical and corrosion properties of the composition.This problem is solved due to the fact that well-known anti-corrosion composition comprising a binder, a plasticizer, a carbon filler, plasticizer use polyurethane foam, in the following ratio, wt.%:
The carbon filler - 10-50
Plasticizer - 2-5
Binding - Rest
As a carbon filler take graphite specified structure, and dispersion or mixtures thereof with technical carbon or calcined coke.As a binder take various resins, such as phenol-formaldehyde, polyester; varnishes, for example, bakelite; adhesives, for example penopolimermineralnaya.As the plasticizer-use polyurethane polyurethane Wild 17 (TU 6-05-221-937-87), which is based on polyoxypropylene based on complex polyester P6-BA, 1,4-butandiol and 4,4'-diphenylmethanediisocyanate. As the plasticizer-foam using foam stamps PES-3 (TU 6-6-05-1806-77), which is produced from polyethylene compositions brand 108-P and foam stamps PES-ST (THE 6-05-321-821-85), which is produced on the basis of polyethylene foam bespreking brand 108-578 BP.The invention consists in that the proposed qualitative and quantitative compositions are more simple in composition composition, which has good adhesion to the surface, high density, stability in water and corrosive environments, as well as heat resistance.In addition, the proposed arrangement does not require complicated preparation of the surface, sufficient mechanical cleaning, dries in 15-20 minutes, apply any standard method and can be cooked and used even in the field.Example 1. 50 l mixer brand BF 3 downloaded 23.3 kg (up to 66.5 wt.%) binding glue marks BF 2 (GOST 12172-74), 10.5 kg (30 wt.%) the carbon filler is graphite (GOST 10274-79) and 1.2 kg (3.5%) plasticizer-polyurethane Wild 17. Then stirred without heating for 30-40 min, and then unloaded.
what AV.The test results of the coatings obtained from the known and proposed composition shown in the table.As can be seen from the table, when the increase and decrease of the content of graphite beyond the selected interval, the strength of the coating and adhesion to the surface begin to fall, especially with the reduction of the content of graphite. The coating in this case becomes less moisture and corrosion resistant.Significantly these figures due to the change in the content of the plasticizer (less than 2 wt.% and more than 5 wt.%): the resistance decreases in 2 times, and corrosion resistance by 25%.In the case of use as a filler mixture of graphite with other carbon materials (carbon black, calcined coke) physico-mechanical properties of the coatings remain quite high.Replacement glue BF 2 on bakelite varnish or epoxy resin does not degrade the quality of coatings.Thus, the compositions can be obtained by a simple coating technology with high physical-mechanical and corrosion properties. Coating composition comprising a binder, a plasticizer, a carbon filler, characterized in that>/BR>The carbon filler - 10 - 50
The plasticizer is 2 - 5
Binder - Ostalnoe
FIELD: chemical industry, paint-vehicle systems, in particular heat protective dyes.
SUBSTANCE: claimed dye contains ceramic and corundum microspheres; resins, selected from group including silicone resin, polyesterepoxy resin, acrylic resin dispersions as binder; pigment; and aluminum powder as deflector. Such composition provides reduced heat loss into environment. Obtained dyes have thermal gradient, improved heat-retention properties and strength, and useful in corrosion and heat-loss protection of building construction, transport, gas and oil lines, heating systems, etc.
EFFECT: easier method for dye production; strength and homogenous heat protective dye layer of improved adhesiveness.
2 cl, 3 tbl
FIELD: polymer materials and corrosion protection.
SUBSTANCE: invention relates to cold-drying anticorrosive coating compositions, which can be used in petroleum, gas, power, chemical, and other industries for protection surfaces of iron articles and structures. Composition of invention is based on binder, namely alkyd-styrene resin or poor alkyd resin in amount 11.0-44.0%. Composition further comprises 0.3-5.0% tannin or tannin derivatives as anticorrosive additive, 3.0-24.0% pigments, 5.0-22.-% fillers, and balancing amount of organic solvent.
EFFECT: enhanced protective properties.
4 cl, 2 tbl, 5 ex
FIELD: corrosion protection.
SUBSTANCE: protective ground paint for painting coiled metal and electrochemical protection of bridges, power lines, and other long term-use metallic structures contains, wt %: epoxide resin 9.0-29.0, polyamide resin 3.0-9.5, pigment 23.0-36.0, zinc nanoparticle preparation 3.0-5.0, filler 13.0-23.2, and solvent - the balance. Zinc nanoparticle preparation is introduced in the form of (0.4-4)x·10-3 M solution in isooctane.
EFFECT: enhanced protective properties.
2 tbl, 4 ex
FIELD: pipeline heat insulation in civil and industrial building.
SUBSTANCE: coating composition includes 5-95 vol.% of polymeric binder and 5-95 vol.% of hollow microspheres. At least one composition layer is coated onto substrate and dried. Said polymeric binder contains 10-90 % of (co)polymer selected from acrylate homopolymer, styrene-acrylate copolymer, butadiene-styrene copolymer, polyvinylchloride, polyurethane, vinylacetate polymer or copolymer or mixture thereof. Binder also contains 10-90 vol.% of water and surfactant mixture. hollow microspheres have particle size of 10-500 mum and bulk density of 50-650 kg/m3, and made from glass, ceramic, polymers, sol or mixture thereof.
EFFECT: improved corrosion resistance and heat insulation of coated substrate; increased adhesion properties.
5 cl, 1 tbl, 1 ex, 3 dwg
FIELD: organic chemistry, in particular composition for corrosive and chemically stable coats.
SUBSTANCE: invention relates to alkyd-epoxy undercoat compositions based on debris from phthalic anhydride and epoxy resin distillation. Claimed composition contains (mass %) epoxydianic resin 45.0-45.4; modified alkyd resin obtained by stepwise esterification of sun flower oil, polyhydric alcohol and slop from phthalic anhydride distillation with grain-size classification of 0.05-1.1 mm and phthalic anhydride content of 37-80 % - 36.0-36.3; filler 4.9-5.5; pigment 3.5-3.8; balance: solvent; and over 100 mass % of composition it contains polyethylene polyamine as curing agent 15, and cobalt naphthenate as curing catalyst 1.8. Composition of present invention is useful in coating of metal parts and various constructions.
EFFECT: undercoat composition of high corrosion resistance, strength and lower cost.
2 tbl, 1 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: 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: 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: 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: 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.