White corundum micro powder filler for aircraft coating

Abstract

The invention provides white corundum micro powder filler for aircraft coating. The filler is redesigned on the basis of conventional white corundum micro powder according to the specific use environment of the aircraft coating, and the ratio of aluminum oxide is greatly lowered to improve the dispersibility of the corundum micro powder filler in the coating. Meanwhile, iron sesquioxide possibly influencing the color and luster of the coating is removed, and sodium oxide ingredients possibly influencing stability in a high-temperature state are removed. In addition, a specific quantity of kieselguhr ingredients is added in order to improve the adhesive force of the coating and the micro powder filler, and although the wear-resisting property of the coating is possibly influenced to a certain degree, the dilatation coefficient of the coating can be remarkably decreased. Meanwhile, due to the fact that the requirement of the use environment of the aircraft coating for the wear-resisting property is relatively low and the requirement for the high temperature resisting property is relatively high, the conventional ingredients of the white corundum micro powder are replaced with zirconium dioxide and silicon nitride, and the high temperature resisting property of the coating can be improved.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a white corundum micropowder filler used for aviation coatings. Background technique [0002] With the development of aerospace industry, the demand and scope of application of aerospace coatings have been greatly expanded. In a broad sense, aviation coatings generally refer to various coatings used on aircraft such as aircraft, while in a narrow sense it mainly refers to coatings used in unconventional environments such as aircraft skins and engines. Due to the harsh environment of use, aviation coatings should have stronger weather resistance in terms of friction, temperature, acid-base corrosion, ion radiation, etc., which determines that the formulation and preparation process of aviation coatings are quite different from ordinary coatings. . [0003] In order to improve the wear resistance of coatings, researchers in the prior art have attempted to add mineral po...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the technical defects of the prior art, and provides a white corundum micropowder filler for aviation coatings, so as to solve the technical problem of uneven texture of the coatings in the prior art when ordinary white corundum micropowder is used to prepare aviation coatings

[0005] Another technical problem to be solved by the present invention is to solve the problem that the coating has reduced adhesion to metal when preparing aviation coatings with ordinary white corundum micropowder in the prior art.