950-DEG G grade heat-insulating high-temperature-resisting and wear-resisting coating and preparation method thereof

Abstract

The invention discloses a 950-DEG G grade heat-insulating high-temperature-resisting and wear-resisting coating which comprises components I and II, wherein the component I is a double component composition which is mixed by components A and B in a proportion of 1:1.5, and the component A in the component I comprises the following components: nano-montmorillonite silicate, a coupling agent and blocking function filler in a mass ratio of 1: 1: 1.5; the component B comprises the following components in parts by mass: 20-35 parts of black silicon carbide, 25-30 parts of fine crystal aluminum oxide, 5-10 parts of a dispersant, 1-5 parts of zinc oxide, 10-15 parts of modified epoxy resin and 2-6 parts of a delustering agent; the component II comprises the following components in parts by mass: 2-6 parts of a delustering agent, 2-6 parts of a wetting agent, 20-50 parts of a curing agent, 5-10 parts of a thickening agent, 5-10 parts of hydroxyethyl cellulose, 1-5 parts of a pH adjustor, 50-60 parts of organosilicone modified epoxy resin, 20-30 parts of filler, 5-10 parts of antimonous oxide and 5-10 parts of a coalescing agent. The invention further designs a preparation method of the 950-DEG G grade heat-insulating high-temperature-resisting and wear-resisting coating.

Description

technical field [0001] The invention relates to the technical field of preparation of environmentally friendly coatings, in particular to a 950-degree-degree heat-insulating, high-temperature, and wear-resistant coating and a preparation method thereof. Background technique [0002] At present, the wear-resistant coatings on the market are mainly used in the steel industry. For fluidized bed boilers, because of the serious friction caused by the fluidization of coal particles inside, they often need to be repaired. After the existing fluidized bed is worn out, it is difficult to repair. Generally, when the wear is serious, the fluidized bed needs to be completely dismantled. This will not only increase the cost exponentially, but also delay for a long time. In addition, a lot of waste will be generated after dismantling , wasting resources and polluting the environment. [0003] Wear-resistant coating is a kind of coating with special functions, which has good wear resistan...

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Problems solved by technology

[0004] There have been many reports on the research on wear-resistant coatings, for example: the patent of CN1339619A discloses a composition ratio of Co:WC=15-25%:85-75 % cobalt / tungsten carbide powder wear-resistant composite coating, prepared by plasma spraying method, the coating can improve the wear resistance of the steel surface, but its friction coefficient is relatively large; CN94116246A discloses a kind of adhesive with epoxy resin Molybdenum disulfide is a solid lubricant, dicyandiamine is a curing agent, nitrile 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 its There are obvious deficiencies in temperature resistance and corrosion resistance