Low-cost colored water-based super-high-temperature-resistant coating prepared through self-crosslinking and sintering crosslinking and preparation method and use method thereof

Abstract

The invention provides a low-cost colored water-based super-high-temperature-resistant coating prepared through self-crosslinking and sintering crosslinking and a preparation method and a use method thereof. The coating comprises 26-31% of organosilicon heat-resistant resin, 8-13% of a high-temperature-resistant pigment, 24-29% of a self-crosslinking acrylic emulsion, 12-17% of a filler, 4-6% of amino resin, 10.7-11.2% of a sintering material, 0.6-1.0% of an adhesion promoter, 1.5-2.8% of a wetting dispersant and 1.2-2.3% of a cooling stabilizer, a film is formed through curing in a self-crosslinking and sintering crosslinking mode, and the film is subjected to ceramization after film forming, The dispersed single-particle resin is melted, diffused and sintered into a compact whole through sintering, the coating can resist high temperature of 500-850 DEG C for a long time after being cured, the product is excellent in heat resistance, good in base material adhesive force, high in hardness, excellent in wear resistance and good in corrosion resistance and weather resistance, the coating cost can be greatly reduced by adopting sintering crosslinking, the requirement for resin performance is reduced, and the ow-cost ultra-high temperature resistant coating is prepared. The coating can be widely applied to the fields of exhaust pipes of vehicles such as automobiles, motorcycles and tractors, chimneys of thermal power plants, heating electric appliances, aerospace military industry and the like.

Description

technical field [0001] The invention belongs to the technical field of high-temperature-resistant coatings, and in particular relates to a low-cost colored water-based ultra-high-temperature-resistant coating prepared by self-crosslinking and sintering crosslinking, as well as a preparation method and a use method thereof. Background technique [0002] High temperature resistant coating is a special functional coating, which can be used at a temperature above 200 degrees Celsius for a long time, and maintains certain physical and chemical properties, so that the protected object can play a normal role in a certain high temperature environment. It is widely used in machinery Motor car engine nozzles, steel chimneys, high-temperature pipes, high-temperature furnace casings, petroleum cracking devices, tanks, artillery and other high-temperature places, delay the thermal hydrogenation corrosion of metal equipment such as steel at high temperatures, and ensure that the equipment ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of the high temperature resistance performance of existing coatings, the present invention provides a low-cost color water-based super high temperature resistant coating prepared by self-crosslinking and sintering crosslinking, which is cured by self-crosslinking and sintering crosslinking to form a film. The coating film is ceramicized, which can withstand high temperature of 500°C-850°C or even 1280°C for a long time. The product has excellent heat resistance, good substrate adhesion, high hardness, excellent wear resistance, good corrosion resistance and weather resistance

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