Preparation method for mica paper with high strength, insulation and high temperature resistance

Abstract

The invention relates to a preparation method for a mica paper with high strength, insulation and high temperature resistance and belongs to the technical field of mica paper. The preparation method comprises the following steps: soaking a bamboo piece in acid liquor and alkali liquor in turn, thereby separating bamboo fibers from the bamboo piece; taking cells and interstitial fluid from bamboo fibers; utilizing high-pressure hydrolysis to decompose cellulose and xylogen in bamboo fibers into organic acid and furfural substances, wherein bamboo fibers have certain toughness and the toughnessand mechanical strength of bamboo fibers are further enhanced by introducing metallic oxides into the surface. According to the invention, the modified bamboo fibers are mixed with ethyl orthosilicate; when the paper sheet is soaked, deionized water is added and reacts with ethyl orthosilicate, so as to generate silicon dioxide; silicon dioxide is bonded with bamboo fibers and mica powder, so thatthe excellent mechanical properties, insulation and high temperature resistance of bamboo fibers and silicon dioxide are utilized to promote the toughness, insulation and high temperature stability of mica paper; the preparation method has a broad application prospect.

Description

technical field [0001] The invention relates to a preparation method of high-strength insulating and high-temperature-resistant mica paper, which belongs to the technical field of mica paper. Background technique [0002] Mica is a general term for a class of hydrous aluminosilicates. Mica paper is made of high-quality muscovite in Sichuan, which is broken into pulp paper by thermochemical or hydraulic stripping, and then cut into continuous roll paper or sheet paper. . Mica has excellent properties such as insulation and high temperature resistance, and is widely used in coatings, paints, fire protection and electrical industries. Among them, making mica into mica paper is one of the most widely used mica applications. [0003] At present, mica paper has all the varieties corresponding to sheet mica products. The industry mainly uses the insulation and heat resistance of mica paper, as well as its acid and alkali resistance, to be used as insulating materials for electri...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a high-strength insulating and high-temperature-resistant mica paper for mi

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