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High-strength mica paper and preparation method thereof

A mica paper, high-strength technology, applied in the field of mica paper

Inactive Publication Date: 2017-01-04
WUHU SAUNAKING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength of mica paper needs to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Select a mica sheet with a thickness-to-diameter ratio of 65, wash it 3 times in clean water until the turbidity of the water is 9°, dry the washed mica sheet, and then calcinate it at 850°C for 1.5 hours to obtain mica powder. The specification of mica powder is selected It is 120 meshes; the weight of master chip powder, urea-formaldehyde resin (weight-average molecular weight is 20,000), glass fiber (length is 0.3mm), polyacrylamide (weight-average molecular weight is 0.5 million), ethylenediaminetetraacetic acid and water Stir and mix at a ratio of 200:30:10:5:4:100 to obtain mica pulp; make the obtained mica pulp to obtain high-strength mica paper A1.

Embodiment 2

[0025] Select a mica sheet with a thickness-to-diameter ratio of 80, wash it in clean water for 3 times until the turbidity of the water is 10°, dry the washed mica sheet, and then calcinate it at 900°C for 1.0h to obtain mica powder. The specification of mica powder is selected It is 180 mesh; mix the weight of mother chip powder, urea-formaldehyde resin (weight-average molecular weight is 30,000), glass fiber (length is 0.5mm), polyacrylamide (weight-average molecular weight is 20,000), ethylenediaminetetraacetic acid and water Stir and mix at a ratio of 250:33:20:8:8:100 to obtain mica pulp; make mica pulp obtained to obtain high-strength mica paper A2.

Embodiment 3

[0027] Select a mica sheet with a thickness-to-diameter ratio of 85, wash it in clean water for 3 times until the turbidity of the water is 11°, dry the washed mica sheet, and then calcinate it at 950°C for 0.5h to obtain mica powder. The specification of mica powder is selected It is 200 mesh; the weight of mother powder, urea-formaldehyde resin (weight-average molecular weight is 40,000), glass fiber (length is 0.6mm), polyacrylamide (weight-average molecular weight is 25,000), ethylenediaminetetraacetic acid and water Stir and mix at a ratio of 300:35:25:10:10:100 to prepare mica pulp; make the obtained mica pulp to obtain high-strength mica paper A3.

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Abstract

The invention discloses high-strength mica paper. The high-strength mica paper is prepared from mica sheets, urea resin, glass fibers, polyacrylamide, ethylene diamine tetraacetic acid and water through pulping and papermaking, wherein in terms of 100 parts by weight of water, the high-strength mica paper is prepared from the components in parts by weight as follows: 200-300 parts of the mica sheets, 30-35 parts of urea resin, 10-25 parts of the glass fibers, 5-10 parts of polyacrylamide and 4-10 parts of ethylene diamine tetraacetic acid. The high-strength mica paper has quite high mechanical strength and overcomes the defect of low mechanical strength of the mica paper in an application process.

Description

technical field [0001] The invention relates to mica paper, in particular to a high-strength 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 of mica paper needs to be further improved. Contents of the invention [0004] The object of the present invention is to provide a high-strength mica paper, which has h...

Claims

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Application Information

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IPC IPC(8): D21H15/10D21H13/38D21H13/40D21H17/55D21H21/18
CPCD21H15/10D21H13/38D21H13/40D21H17/55D21H17/72D21H21/18
Inventor 马西健
Owner WUHU SAUNAKING ELECTRONICS TECH CO LTD
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