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High-strength composite mica paper and its preparation method

A composite mica, high-strength technology, applied in the field of mica paper, can solve the problems of inability to meet the needs of multi-field industrial applications, poor mechanical strength and toughness of mica paper, etc.

Active Publication Date: 2018-02-23
GUANGDONG GUANHAO HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength and toughness of mica paper directly made from mica sheets are not good, and cannot meet the needs of many industries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0026] 1) Mica flake powder (180 mesh), polyvinyl chloride-based resin (weight average molecular weight is 30,000), asbestos (thickness is 0.2mm), quaternary ammonium starch ether, ethylenediaminetetraacetic acid, water according to the weight ratio: 230:33:13:8:8:100 Stir and mix to obtain mica pulp; finally, the mica pulp is made into mica paper, and the mica paper is a mica layer; before 1), the liquid-solid ratio is 4. Wash the mica sheet with water until the turbidity of the water is 12°, and wash 3 times with water.

[0027] 2) earlier novolac epoxy resin (weight-average molecular weight is 30,000), polyimide resin (weight-average molecular weight is 40,000), ethylene glycol ether, alcohol fat twelve, dibutyl phthalate and water The mixture was mixed according to the weight ratio of 100:80:13:3:3:130, followed by heat treatment at 190° C. for 1.0 h, and finally extruded to obtain a resin layer.

[0028] 3) Place the prepared mica paper on top of the prepared resin layer...

Embodiment 3

[0030] 1) Mica flake powder (200 mesh), polyvinyl chloride-based resin (weight average molecular weight is 30,000), asbestos (thickness is 0.2mm), quaternary ammonium starch ether, ethylenediaminetetraacetic acid, water according to the weight ratio: Stir and mix at 250:35:15:10:9:100 to obtain mica pulp; finally, the mica pulp is made into mica paper, which is a mica layer; before 1), the liquid-solid ratio is Wash the mica sheet with 6 liters of water until the turbidity of the water is 10°, and wash 2 times with water.

[0031] 2) earlier novolac epoxy resin (weight-average molecular weight is 40,000), polyimide resin (weight-average molecular weight is 50,000), ethylene glycol ether, alcohol fat twelve, dibutyl phthalate and water Mixing according to the weight ratio of 100:95:15:5:5:150, followed by heat treatment at 200°C for 0.5h, and finally extrusion molding to obtain a resin layer.

[0032] 3) Place the prepared mica paper on top of the prepared resin layer, heat pr...

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PUM

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Abstract

The invention discloses high-strength compound mica paper which comprises preparation of a mica layer, preparation of a resin layer and combination of the mica layer and the resin layer, wherein the preparation of the mica layer comprises: washing a mica plate, and drying the mica plate to obtain a dried mica plate; then calcining the dried mica plate to obtain mica powder; stirring and mixing the mica powder, polyvinyl chloride-based resin, asbestos, cationic starch, edetic acid and water to obtain mica paper pulp; finally, making the mica paper by the mica paper pulp, wherein the mica paper is the mica layer. Besides the excellent characteristics of insulation and high temperature resistance, the high-strength compound mica paper also is extremely high in mechanical strength and toughness.

Description

technical field [0001] The invention relates to mica paper, in particular to high-strength composite mica paper and a preparation method thereof. Background technique [0002] Mica is a general term for a class of hydrous aluminosilicates. 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 electrical equipment and electrical equipment. However, the mechanical strength and toughness of the mica paper directly prepared from the mica sheets are not good, and cannot meet the needs of various industrial applications. Contents of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H13/44D21H13/20
CPCD21H13/20D21H13/44
Inventor 马西健
Owner GUANGDONG GUANHAO HIGH TECH