Silica powder for wood lacquer transparent finishing paint and preparation method of silica powder

Abstract

Disclosed are silica powder for wood lacquer transparent finishing paint and a preparation method of the silica powder. The method comprises the steps that firstly, high-purity crystalline quartz sandis magnetically separated, the magnetically-separated high-purity crystalline quartz sand is crushed by airflow crushing equipment, a modifier is added for modification during crushing, and after modification is completed, the material is classified by an airflow classifier to obtain the silica powder with D50 equal to 2.0-7.0 micrometers and D100 smaller than or equal to 25.0 micrometers, wherein the silica powder is the silica powder for the wood lacquer transparent finishing paint. By means of the method, the high-purity crystalline quartz sand with specific particle size and specific components is used as a raw material, the silica powder product with specific particle size distribution, a small specific surface area, a regular particle shape and high purity is prepared through airflow crushing, the process flow is simple, the wood lacquer transparent finishing paint obtained by applying the product is good in transparency and handfeel, easy to disperse and unlikely to settle, andthe silica powder can be used for improving the hardness and scratch resistance of a paint film and is suitable for the wood lacquer transparent oily finishing paint, water-based finishing paint, other transparent finishing paint, primer, transparent adhesives and the like.

Description

technical field [0001] The invention belongs to the technical field of deep processing of inorganic non-metallic materials, and in particular relates to silicon micropowder for transparent top coat of wood varnish and a preparation method thereof. Background technique [0002] In recent years, with the gradual improvement of people's material living standards, solid wood furniture has become more and more popular in the market, followed by higher requirements for the durability of furniture decoration and aesthetic effects, especially the scratch resistance of the furniture surface and the transparency of the paint film. Many transparent polyurethane paints and nitro paints on the market have good transparency, but poor scratch resistance. In order to obtain a better anti-scratch effect, it is necessary to add inorganic fillers with higher hardness such as silicon micropowder and transparent powder. However, the addition of inorganic fillers will affect the scattering in t...

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Problems solved by technology

However, because the product is a filter cake, it needs to be dispersed before it can be used. At the same time, the filter cake contains solvents, and its use is limited.

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