Mica piece with high surface tearing strength and forming method thereof

A technology with tear resistance and high surface, applied in the direction of electrical components, fiber types, structural parts, etc., it can solve the problems of the surface layer of mica products falling off and mica products being scrapped, and achieve good surface tear resistance and high heat resistance. The effect of good resistance to surface tearing strength

Active Publication Date: 2021-11-12
浙江荣泰电工器材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the related art that the surface layer of the mica product falls off during the tearing of the release paper, resulting in the scrapping of the entire mica product, the application provides a mica part with high surface tear resistance and its forming method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0055] The preparation method of zirconia: 5.0L of 10% sodium hydroxide solution is added to the stirring and grinding machine, and then 200g of zirconium oxychloride (Aladdin) is gradually added to the sodium hydroxide solution in the stirring and grinding machine, and the temperature is controlled At 4°C, stir and grind at 60rpm for 60min, wash the mixture and let it settle for 2h, wash with ethanol, filter, dry at 30°C to obtain a semi-finished product, put the semi-finished product in a planetary ball mill, and ball mill at 100rpm for 40min to obtain Zirconia powder, the obtained zirconia powder is calcined at 1050°C±5°C for 2 hours, and naturally cooled to obtain t-phase zirconia.

preparation example 2

[0057] The modified coating is prepared from the following raw materials in mass percentage: 24% waterborne polyurethane, 2.5% Degussa nonionic wetting and dispersing agent BREAK-THRU DA 646, 1% Foamaster MO 2190 defoamer, 4% organic Silicon substrate wetting agent, 2% propylene glycol phenyl ether, 1% Wante VANTEX-T, 55.5% deionized water, 5.71% synthetic mica, 2.86% graphene, 1.14% of the Zirconia and 0.29% yttria.

[0058] The purchased 40-mesh fluorophlogopite was placed in a planetary ball mill, ball milled at 120 rpm for 15 minutes, and sieved with a 1000-mesh sieve to obtain fluorophlogopite with a particle size of less than 1000 mesh. The purchased graphene is placed in a planetary ball mill, ball milled at 60 rpm for 60 minutes, and sieved with a 1200 mesh screen to obtain graphene with a particle size of less than 1200 mesh. The purchased diyttrium trioxide powder is placed in a planetary ball mill, ball milled at 120 rpm for 15 minutes, and sieved with a 1000 mesh ...

preparation example 3

[0066] The preparation of mica powder composition comprises the following steps:

[0067] S1, put 10kg of muscovite into a planetary ball mill, mill it at 120rpm for 10min, and sieve it with a 1000 mesh screen to obtain muscovite with a particle size of less than 1000mesh; put 5kg of biotite into a planetary ball mill, mill it at 150rpm for 10min, and use 1000 Purpose sieve sieving to obtain biotite with particle size less than 1000 mesh, put 5kg of fluorphlogopite into planetary ball mill, ball mill with 120rpm for 10min, and sieve with 1000 mesh sieve to obtain fluorphlogopite with particle size less than 1000 mesh;

[0068] S2, weighing 1000g of muscovite mica with a particle size of less than 1000 mesh, 100g of biotite with a particle size of less than 1000 mesh, and 200g of fluorophlogopite with a particle size of less than 1000 mesh, placed in a high-speed dispersion kettle, and mixed for 8 minutes at a speed of 200rpm to obtain a mica powder composition.

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Abstract

The invention relates to the technical field of mica product processing, in particular to a mica piece with high surface tearing strength and a forming method of the mica piece. The mica piece with high surface tearing strength comprises a main mica piece body, and the main mica piece body is prepared from organic silicon resin and mica slurry. The mica slurry is prepared from the following raw materials in parts by weight: 100 parts of a mica powder composition, 2-8 parts of a reinforcing filler and 80-120 parts of an organic solvent, wherein the reinforcing filler is mainly composed of modified Kevlar fibers; the modified Kevlar fibers are vertically distributed in the main mica piece body; the modified Kevlar fiber is composed of a Kevlar fiber and a modified coating which coats the outer wall of the Kevlar fiber; and the specification of the Kevlar fiber ranges from 100 D to 300 D, and the length of the Kevlar fiber ranges from 0.1 mm to 1.0 mm. In the tearing process of release paper on a double-sided adhesive tape, the surface of the mica product is not prone to being damaged, and the quality of the mica product is good.

Description

technical field [0001] The present application relates to the technical field of mica product processing, in particular to a mica piece with high surface tear resistance and a molding method thereof. Background technique [0002] At present, the new energy automobile industry is developing rapidly, and the research and development of the battery pack, which is one of the cores of the new energy automobile industry, is particularly critical. The safety and stability of battery packs for new energy vehicles is one of the most concerned issues for consumers. [0003] In order to ensure the safety performance of the battery pack, manufacturers of new energy vehicles will use high-insulation mica products as the insulation protection material for the battery pack shell. Mica products have high insulation and high temperature resistance. Therefore, mica products can be used for batteries. Groups provide better security protection. In the actual process of attaching mica products...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/60H01B3/00H01B19/00H01M50/229H01M50/233C04B26/32C04B20/10D06M15/564D06M11/74D06M11/79D06M11/46D06M11/45D06M101/36
CPCH01B17/60H01B3/006H01B19/00D06M15/564D06M11/74D06M11/79D06M11/46D06M11/45H01M50/229H01M50/233C04B26/32C04B20/1074D06M2101/36C04B2201/20C04B2201/50C04B14/20C04B16/0691C04B20/1066C04B20/1055C04B20/1037C04B20/1051C04B20/1022Y02E60/10
Inventor 袁忠纯陆锦琪姚静欧阳林周培学
Owner 浙江荣泰电工器材股份有限公司
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