Powder coating containing aerogel particles and preparing method thereof

Abstract

A powder coating containing aerogel particles and a method for preparing the same relates to a powder coating and a preparation method, which solves the problem that the existing heat insulating composite material containing aerogel is not suitable for making thinner heat insulation material and spraying insulation layer on the component surface, and the aqueous coating has high water content, long construction period and low heat insulation property. The coating of the invention is prepared by 5-80 percent of aerogel particles and 20-95 percent of powderedd resin by volume percentage, and the method includes the following steps: firstly, aerogel, resin and additive are mixed by volume percentage; secondly, the mixed materials are delivered into a melting-extruder melt and extrude; thirdly, the extrudate is pressed into thin sections; fourthly, the thin sections are ground into small pieces by roller machine; fifthly, the small pieces are conveyed into an air staged milling equipment to grind, so as to obtain the powder coating. The powder coating containing aerogel of the invention has advantages of environmental protection, clearness, economy, high efficiency, and good heat insulation property, sound insulation property and surface hydrophobicity.

Description

technical field [0001] The present invention relates to powder coating and its preparation method. In particular, powder coatings containing airgel particles and methods for their preparation. Background technique [0002] Aerogel is a highly dispersed solid-state material in which colloidal particles or polymer molecules aggregate to form a nanoporous network structure, and the pores are filled with a gaseous dispersion medium. The unique nanostructure of airgel makes it have many characteristics, such as low thermal conductivity, low sound velocity, low density and high specific surface area, etc., and it is a material with excellent heat insulation and sound insulation properties. However, airgel has low strength and poor wear resistance, and most industrial products are powder, which limits the application of airgel. At present, to solve this problem, a composite method is commonly used to expand the application range of aerogels. Chinese patents CN1171094A (a composi...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing method of compositely pressing airgel and resin into plates is not suitable for manufacturing thinner heat insulating materials, it is also not suitable for spraying heat insulating layers on the surface of components; The period is relatively long, and the heat insulation performance is low; and the Chinese patent CN1546312A liquid resin is easily immersed in the nanopores of the airgel, which reduces the overall heat insulation performance. A powder coating containing airgel particles is provided And preparation method thereof, the concrete technical scheme that solves the above problems is as follows: