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Production method of mica paper

A manufacturing method and technology of mica paper, applied in the field of manufacturing mica paper, can solve the problems of unsatisfactory electrical strength and tensile strength of mica paper, single process of mica paper, etc., achieve good electrical strength and tensile strength, and increase water resistance Effect

Inactive Publication Date: 2013-11-27
ANHUI JIANGWEI PRECISION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current production process of mica paper is single, using raw powder or cooked powder for production, the electrical strength and tensile strength of mica paper are not ideal, and a new production process needs to be studied

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A method for manufacturing mica paper, which is made of the following raw materials in parts by weight (kg): mica 90, boric acid 2, chlorinated paraffin 2, attapulgite 8, sepiolite powder 3, gelatin 5, polyvinylpyrrolidone 1, urea 4. Ammonium persulfate 2. Appropriate amount of water;

[0016] Include the following steps:

[0017] (1) Calcining mica at a high temperature of 700-800°C for 1-2 hours to obtain mica clinker;

[0018] (2) Add silane coupling agent KH550 equivalent to 4% of the clinker weight and 2% sodium tripolyphosphate to the clinker, and grind it into powder to obtain a 50-120 mesh powder;

[0019] (3) Mix clinker powder with other remaining raw materials and add water until the water content is 40-50%, heat to 80-90°C, and stir for 1-2 hours;

[0020] (4) Dilute the slurry in step (3) to a clinker content of 3-4%, add silicon carbide powder equivalent to 4-5% of the clinker powder weight, stir and disperse evenly, and make paper with a rotary screen; ...

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Abstract

The invention discloses a production method of mica paper. The mica paper is produced from the following raw materials in parts by weight: 90-100 parts of mica, 1-2 parts of boric acid, 2-3 parts of chlorinated paraffin, 5-8 parts of attapulgite, 3-4 parts of sepiolite powder, 4-5 parts of gelatin, 1-2 parts of polyvinylpyrrolidone, 3-4 parts of urea, 1-2 parts of ammonium persulphate and a proper amount of water. According to the method disclosed by the invention, by adding the chlorinated paraffin, the water resistance and insulating property of the mica paper are improved while maintaining the advantages of breakdown resistance, heat insulation and the like of natural mica; and the produced mica paper has good electric strength and tensile strength.

Description

technical field [0001] The invention relates to the technical field of mica paper production, in particular to a method for manufacturing mica paper. Background technique [0002] Mica is a naturally occurring phyllosilicate mineral, which has excellent physical and electrical properties and maintains the above properties at high temperatures. It is completely chemically inert and non-flammable. The most important thing is It is resistant to high voltage, corona discharge and radiation. [0003] Mica paper is made of crushed mica flakes (muscovite, phlogopite, synthetic mica) as raw material, which is made into paper rolls by chemical pulping or hydraulic mechanical pulping at a slow speed of the cylinder paper machine, and then cut into rolls Tube paper or flat paper, mica paper maintains the excellent properties of natural mica, and has uniform thickness, small dielectric strength fluctuation range, high and stable corona initial voltage; its dielectric loss voltage chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/02C04B14/20
Inventor 张伯琴査丹艳
Owner ANHUI JIANGWEI PRECISION IND