Preparation method of capacitor sealing rubber with good thermal stability

A technology for thermal stability and capacitors, which is applied in the field of capacitors, can solve the problems of ignoring the sealing effect of sealing rubber, small output value of capacitor sealing rubber, and poor thermal stability, so as to enhance the mechanical properties and thermal stability of products, improve thermal stability and Mechanical properties, effects of low chemical unsaturation

Inactive Publication Date: 2018-06-19
合肥市易远新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The domestic capacitor industry generally believes that the electrolyte is the key to the long life of the capacitor, while ignoring the sealing effect of the sealing rubber. Foreign research on capacitor sealing rubber is much more in-depth than domestic research. Capacitor sealing rubber is only a part of the rubber industry. Special rubber products with very small output value, so the research on sealing rubber has not received enough attention
Domestic capacitor sealing rubber has long been stuck in poor thermal stability and low reliability, which cannot meet the needs of high-reliability complete machines and needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of good capacitor sealing rubber of thermal stability, comprises the steps:

[0020] S1. Mix 5 kg of white carbon black, 4 kg of carboxymethyl cellulose, 1 kg of palladium chloride, and 80 kg of water evenly, add a 0.4 mol / L sodium hydroxide solution to adjust the pH value of the system to 6-6.4, keep the temperature in a water bath for 20 minutes, and then The temperature is 90°C, cooled to room temperature, filtered, washed, and dried to obtain a white carbon black compound;

[0021] S2, 100kg butyl rubber, 20kg phenyl silicone rubber, 20kg polylactic acid, 40kg white carbon black compound, 16kg sepiolite powder, 5kg polyacrylonitrile-based carbon fiber, 6kg methyl silicone oil, 0.5kg oxidized polyethylene wax, 1.2 kg stearic acid, 0.5kg oleic acid, 1.2kg antioxidant 1010 are evenly mixed to obtain rubber mix;

[0022] S2. Add 0.5kg 2,4-dichlorobenzoyl peroxide and 0.3kg cyclohexane peroxide to 100kg of mixed rubber, mix evenly, and vulca...

Embodiment 2

[0024] A kind of preparation method of good capacitor sealing rubber of thermal stability, comprises the steps:

[0025] S1. Mix 5 kg of white carbon black, 4 kg of carboxymethyl cellulose, 1 kg of palladium chloride, and 80 kg of water evenly, add a 0.4 mol / L sodium hydroxide solution to adjust the pH value of the system to 6-6.4, keep the temperature in a water bath for 20 minutes, and then The temperature is 90°C, cooled to room temperature, filtered, washed, and dried to obtain a white carbon black compound;

[0026] S2, 100kg butyl rubber, 20kg phenyl silicone rubber, 20kg polylactic acid, 40kg white carbon black compound, 16kg sepiolite powder, 5kg polyacrylonitrile-based carbon fiber, 6kg methyl silicone oil, 0.5kg oxidized polyethylene wax, 1.2 kg stearic acid, 0.5kg oleic acid, 1.2kg antioxidant 1010 are evenly mixed to obtain rubber mix;

[0027] S2. Add 0.5kg 2,4-dichlorobenzoyl peroxide and 0.3kg cyclohexane peroxide to 100kg of mixed rubber, mix evenly, and vulca...

Embodiment 3

[0029] A kind of preparation method of good capacitor sealing rubber of thermal stability, comprises the steps:

[0030] S1. Mix 8 kg of white carbon black, 3 kg of carboxymethyl cellulose, 1.5 kg of palladium chloride, and 70 kg of water evenly, add a 0.5 mol / L sodium hydroxide solution to adjust the pH value of the system to 6-6.4, and keep the temperature in a water bath for 18 minutes. The temperature of the water bath is 91°C, cooled to room temperature, filtered, washed, and dried to obtain a white carbon black compound;

[0031] S2, 95kg butyl rubber, 25kg phenyl silicone rubber, 18kg polylactic acid, 42kg white carbon black compound, 14kg sepiolite powder, 8kg polyacrylonitrile-based carbon fiber, 5kg methyl silicone oil, 0.8kg oxidized polyethylene wax, 1kg Stearic acid, 0.6kg oleic acid, 1kg antioxidant 1010 are evenly mixed to obtain a rubber compound;

[0032] S2. Add 0.8 kg of 2,4-dichlorobenzoyl peroxide and 0.25 kg of cyclohexane peroxide to 100 kg of mixed rub...

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PUM

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Abstract

The invention discloses a preparation method of capacitor sealing rubber with good thermal stability. The preparation method comprises the following steps: uniformly mixing white carbon black, carboxymethyl cellulose, palladium chloride and water; adding a sodium hydroxide solution to adjust the pH (Potential of Hydrogen) value of the system to 6 to 6.4; carrying out heat preservation in a water bath and cooling to room temperature; filtering, washing and drying to obtain a pre-prepared material; uniformly mixing butyl rubber, phenyl silicone rubber, polylactic acid, the pre-prepared material,sepiolite powder, polyacrylonitrile-based carbon fiber, methyl silicone oil, oxidized polyethylene wax, stearic acid, oleic acid and an oxidant 1010 to obtain mixed rubber; adding 2,4-dichlorobenzoylperoxide and cyclohexane peroxide into the mixed rubber and uniformly mixing; vulcanizing, extruding and molding to obtain the capacitor sealing rubber with the good thermal stability. According to the preparation method of the capacitor sealing rubber with the good thermal stability, disclosed by the invention, the obtained sealing rubber forms a highly cross-linked network structure and has excellent thermal stability and mechanical property and high impact strength.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a method for preparing capacitor sealing rubber with good thermal stability. Background technique [0002] The domestic capacitor industry generally believes that the electrolyte is the key to the long life of the capacitor, while ignoring the sealing effect of the sealing rubber. Foreign research on capacitor sealing rubber is much more in-depth than domestic research. Capacitor sealing rubber is only a part of the rubber industry. Special rubber products with very small output value, so the research on sealing rubber has not received enough attention. Domestic capacitor sealing rubber has long been stuck in poor thermal stability and low reliability, which cannot meet the needs of high-reliability complete machines and needs to be solved urgently. Contents of the invention [0003] Based on the technical problems in the background technology, the present invention propose...

Claims

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Application Information

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IPC IPC(8): C08L23/22C08L83/04C08L67/04C08L1/28C08L23/30C08K13/04C08K7/06C08K3/34C08K5/09C08K3/36C08K5/14
CPCC08K2201/014C08L23/22C08L2201/08C08L2203/20C08L2205/025C08L2205/035C08L83/04C08L67/04C08L1/286C08L23/30C08K13/04C08K7/06C08K3/346C08K5/09C08K3/36C08K5/14
Inventor 黄洁
Owner 合肥市易远新材料有限公司
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