A kind of high temperature resistant modified epoxy paint and its preparation method and application

Abstract

The invention provides a high-temperature-resistant modified epoxy paint. The high-temperature-resistance modified epoxy paint comprises a main agent component A and a curing agent component B. The component A is prepared from, by mass, 30% to 40% of organosilicon-modified epoxy resin, 3% to 6% of talcum powder, 6% to 10% of mica powder, 8% to 15% of glass powder, 6% to 10% of titanium dioxide, 10% to 15 % of zinc phosphate, 10% to 15% of solvents and 1% to 6% of assistants, the sum of the mass percents of all the raw materials in the main agent component A is 100%, and the curing agent component B comprises a polyamide curing agent. In the formula, the use amount of the good high-temperature-resistance organosilicon-modified epoxy resin is small, the combined action of padding, pigment and the assistants is in cooperation, the high-temperature-resistant modified epoxy paint has good heat resistance and good rot resistance, the performance of a paint film is excellent, and low-cost protection of a metal substrate under the high temperature condition can be achieved. The invention further provides a preparing method of the high-temperature-resistance modified epoxy paint and an application of the high-temperature-resistance modified epoxy paint.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-temperature-resistant modified epoxy paint and its preparation method and application. Background technique [0002] Coatings are widely used in various sectors of the national economy. Applying coatings on the surface of objects can isolate, protect and decorate objects, especially for high-temperature places such as steel chimneys, high-temperature pipelines, petroleum cracking devices, and high-speed locomotive wheels. For metal equipment under high temperature, it is very necessary to spray high-temperature-resistant coatings on these metal equipment to delay their thermal oxidation corrosion at high temperature and prolong the service life of the equipment. [0003] Although the existing epoxy resin coatings have many excellent properties, such as good initial adhesion and excellent corrosion resistance, their heat resistance is not good enough. After driving at hig...

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Problems solved by technology

[0003] Although the existing epoxy resin coatings have many excellent properties, such as good initial adhesion and excellent corrosion resistance, their heat resistance is not good enough. After driving at high speed for about 6 months, it will be affected by high temperature and partially fall off, which cannot play a very good protective role.

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