A high temperature resistant secondary sintering curing powder coating

Abstract

The invention relates to a high temperature resistant secondary sintering curing type powdery coating. The coating comprises the following components, by weight, 400-500 parts of a Silres605 resin, 12-26 parts of a B1530 curing agent, 60-100 parts of mica powder, 80-125 parts of torispherical silicon powder, 60-120 parts of low-melting-point glass micro-powder, 3-5 parts of a silane coupling agent, 8.5-10 parts of polyether modified siloxane, 24-60 parts of silicon carbide powder, 40-70 parts of strontium aluminum phosphate, and 25-40 parts of ultrafine aluminum powder. An organic resin coat is formed through the primary curing at a temperature of 160-250DEG C for 30min, and a secondary sintering curing reaction is carried out because of the use in a high temperature (above 300DEG C) environment to form a hard and compact inorganic sintering coat (organic components crack and volatilize), so the powdery coating has the performances of a common coating, and also has the characteristics of heat resistance, corrosion resistance, weather resistance and the like.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to high-temperature coatings, in particular to a high-temperature-resistant secondary sintering-curing powder coating. Background technique [0002] In my country's industrial production, there are some high-temperature, high-humidity, high-corrosion production equipment, such as metallurgy, petroleum, aviation, chemical industry, medicine, food and other industries. Their production equipment may use turbine blades, gas turbines, compressors, engines, Biofuel heating systems, boiler combustion systems, overheating pipes, incinerator pipes and walls, barbecue grills, heaters, high-power lighting shells, heating pipes, hot stoves, automobile mufflers, brake pads for vehicles, ovens, high-temperature furnaces, Motorcycle exhaust pipes, chimneys and other high-temperature-resistant equipment, these equipment have been operating in a high-temperature and high-corrosion environment for a long time, t...

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Problems solved by technology

[0002] In my country's industrial production, there are some high-temperature, high-humidity, high-corrosion production equipment, such as metallurgy, petroleum, aviation, chemical industry, medicine, food and other industries. Their production equipment may use turbine blades, gas turbines, compressors, engines, Biofuel heating systems, boiler combustion systems, overheating pipes, incinerator pipes and walls, barbecue grills, heaters, high-power lighting shells, heating pipes, hot stoves, automobile mufflers, brake pads for vehicles, ovens, high-temperature furnaces, Motorcycle exhaust pipes, chimneys and other high-temperature-resistant equipment, these equipment have been operating in a high-temperature and high-corrosion environment for a long time, the corrosion is very serious and rapid, and some special materials are needed to meet the requirements of this working condition. Ordinary paint will fall off after one or two months of brushing, and even some high-temperature environments will be damaged immediately, and the protective effect of the coating cannot be achieved at all.

[0003] In addition, my country's open-air chimneys, wind power blades and pipe piles, trucks, construction machinery, motorcycle engine casings and exhaust pipes have very high operating temperatures, and it is difficult for general coatings to meet such harsh environmental requirements. For this reason, some Coating varieties with high temperature resistance, high wear resistance and high surface hardness are urgently needed

[0004] Through searching, no published patent documents identical with the application of the present invention have been found

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