Environment-friendly high temperature-resistant inorganic insulated paint and preparation method thereof

Abstract

The invention relates to environment-friendly high temperature-resistant inorganic insulated paint and a preparation method thereof and belongs to the field of preparation of coatings. The environment-friendly high temperature-resistant inorganic insulated paint consists of a component A and a component B, wherein the component A consists of the flowing raw materials in percentage by mass: 41 to 44 percent of silica sol, 18.5 to 19.8 percent of inorganic pigment, 5.3 to 6.3 percent of kaolin, 4.4 to 5.0 percent of mica powder, 2.2 to 3.0 percent of talcpowder, 22 to 24 percent of deionized water, and 2.1 to 2.2 percent of aid; and the component B consists of the following raw materials in percentage by mass: 1.0 to 1.2 percent of acetic anhydride and 98.8 to 99.0 percent of methyltrimethoxysilane. During use, the component A and the component B are stirred and mixed in a ratio and cured; and then a mixture is subjected to air spraying onto metal base materials such as aluminum alloy, stainless steel and the like which are treated. The paint has the advantages of environment-friendliness, high temperature resistance and insulativity, acid and alkali resistance, long normal temperature quality guarantee period, long construction time and the like, and can be cured at normal temperature.

Description

technical field [0001] The invention relates to an environment-friendly high-temperature-resistant inorganic insulating paint and a preparation method thereof, belonging to the field of paint preparation. Background technique [0002] Insulating varnishes at home and abroad can be divided into organic insulating varnishes and inorganic insulating varnishes. According to the thermal stability during use, they are divided into 7 grades, among which C grade has the best thermal stability and requires a temperature resistance of above 180°C. Class C organic insulating varnish is usually prepared by using silicone resin, polyimide resin, polyphenylene ether resin and polybenzimidazole resin as high-temperature-resistant binders, and adding inorganic pigments and fillers. However, due to the limited temperature resistance of the organic resin binder itself, it is difficult to use it for a long time at a high temperature exceeding 350°C. If such a high temperature is satisfied, a b...

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Problems solved by technology

Sol-gel method to prepare high temperature resistant insulating coatings, Journal of Dalian University of Technology, 2008, 27 (2): 137-139) reported that ethyl silicate and nitrate were used as precursors to prepare high temperature resistant insulating coatings by sol-gel method. High-temperature insulating varnish, but this kind of insulating varnish has a short stable time, is not environmentally friendly, and has a high curing temperature, that is, it needs to be 800°C to obtain a coating with good insulating properties

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