FIELD: manufacturing technology.
SUBSTANCE: invention relates to heat-insulating coatings filled with hollow microspheres, for pipelines and tanks different surfaces heat insulation and protection against corrosion. Coating made from water-suspension composition with viscosity from 1 to 100 Pa·s, which includes mixture of polymer binder 5-95 vol% with hollow microspheres 5-95 vol%, as polymer binder composition contains water-emulsion polymer latex composition, containing from 10 to 90 vol% of (co)polymer, selected from group comprising acrylate homopolymer, styrene-acrylate copolymer, butadiene-styrene copolymer, polystyrene, butadiene polymer, polyvinyl-chloride polymer, polyurethane polymer, polymer or copolymer of vinyl acetate or mixture thereof and from 10 to 90 wt% mixture of water and surfactant, as hollow microspheres composition contains microspheres with sizes varying from 10 to 500 mcm and different apparent density from 650 to 50 kg/m3, selected from group comprising hollow glass microspheres, hollow ceramic microspheres, hollow polymer microspheres, hollow industrial (ash) microspheres or mixture thereof, water suspension composition additionally contains mixture of polyatomic alcohol with polybasic carboxylic or amino acid in equimolar ratio, additionally contains at least one corrosion inhibitor, selected from group consisting of anionic, cation-active and ionogenic, as well as mixed corrosion inhibitors, amides and amines or derivatives thereof, aldehydes and sulphur containing compounds, quaternary ammonium compounds, chromates, molybdates, nitrites, salts of inorganic acids, high-molecular and acetylene alcohols, alkyl- or aryl carboxylates, amino acids, sulfonates and alkyl phosphates, in following proportions, pts.wt: mixture of polymer binder with hollow microspheres 100, mixture of polyatomic alcohol with polybasic carboxylic or amino acid 2-5, said corrosion inhibitor 5-10. Technical result is obtaining anticorrosive heat insulating coating having good adhesion and physical and mechanical properties without using complex equipment, with possibility of application onto any surface without preliminary machining and coating heat conductivity value of 0.001 W/m°C.
EFFECT: disclosed is high-end corrosion-resistant heat insulating coating producing method with improved thermo-technical characteristics.
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