A high-temperature wear-resistant coating at a high temperature of 800 degrees and its preparation method

Abstract

The invention discloses a high temperature wear-resistant coating at a high temperature of 800 degrees and a preparation method thereof. : black silicon carbide, fine-grained alumina, dispersant, zinc oxide, modified epoxy resin, matting agent and auxiliary materials; component B in component A includes the following components: silicone modified epoxy resin, filler, Antimony trioxide, film-forming aid and thickener; B component is curing agent and coupling agent, mix A and B components in A, and then use B component to cure A component to obtain 800 degrees High-temperature wear-resistant coating at high temperature, the high-temperature wear-resistant coating is made of two-component composite. It has excellent high temperature resistance and wear resistance, and also has good hardness, high thermal stability, ductility and machinability Excellent properties such as durability; the present invention also designs a method for preparing the high-temperature wear-resistant coating, the preparation method is simple and the cost is low.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a coating resistant to the environmental effect of being easy to wear below 800 degrees and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] Wear is known as one of the three major forms of material failure. According to statistics, about 70-80% of equipment damage and nearly 50% of energy consumption are attributed to various forms of wear and tear every year, which not only causes waste of energy and materials, but also causes huge economic losses, serious even It also endangers personal safety and affects national development. [0003] In the energy and economic cost consumption of industrial fields such as building materials, thermal power generation and metallurgical mines, the cost due to wear and tear occupies a considerable proportion. Taking the cement industry as an example, the construction site is ...

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Problems solved by technology

[0005] So far, there have been many reports on the research on wear-resistant coatings. For example, the patent of CN1339619A discloses a cobalt / tungsten carbide wear-resistant composite coating with a composition ratio of Co:WC=15-25%:85-75%. The layer is prepared by plasma spraying method. This coating can improve the wear resistance of the steel surface, but its friction coefficient is relatively large; CN94116246A discloses a lubricant with epoxy resin as adhesive and molybdenum disulfide as solid. Dicyandiamide is a curing agent, butyronitrile 40 is an epoxy modifier, and other modified lubricating coatings are added at the same time, which has good wear-resistant lubricity and anti-sticking properties, but it has obvious deficiencies in temperature resistance and corrosion resistance; CN1401933A discloses A kind of wear-resistant and anti-corrosion coating composed of E-type epoxy resin (E12, E10) and corresponding curing agent, but the coating composed of E-type epoxy resin as the basic raw material and matrix, the ambient temperature is very difficult in long-term use over 120°C