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A kind of low-shrinkage capacitor diaphragm and preparation method thereof

A low-shrinkage, capacitor technology, used in the manufacture of hybrid capacitor separators and hybrid/electric double-layer capacitors, can solve problems such as reducing the service life of capacitors, reduce product shrinkage, improve stability, and increase economic benefits. Effect

Active Publication Date: 2021-09-21
TONGLING CITY START ELECTRONICS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires the diaphragm material to be an electronic insulator with good isolation performance. Traditional diaphragm materials are mostly made of resin fibers, which have shrinkage during the long-term use of the capacitor, which has a certain impact on the isolation performance of the capacitor and reduces the capacity of the capacitor. Therefore, research on capacitor diaphragms with low shrinkage is an important direction at this stage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A capacitor diaphragm with low shrinkage rate, which is made of the following raw materials in parts by weight: 60 parts of polypropylene fiber, 12 parts of polyester fiber, 15 parts of polyacrylonitrile, 6 parts of polyisobutylene, polyoxymethylene fiber 8 parts, 4 parts of nano-carbon fiber, 15 parts of unsaturated polyester resin, 2 parts of adipic acid, 80 parts of dimethylacetamide, 2 parts of titanium gypsum, 4 parts of calcium carbonate whiskers, 1 part of titanium dioxide, tributyl citrate 0.4 part of ester, 1 part of zinc dibutyldithiocarbamate, 1 part of antioxidant, 1 part of adhesive.

[0025] The antioxidant is a mixture of 2,6-tertiary butyl-4-methylphenol, didodecyl alcohol ester and trioctyl ester with a mass ratio of 1:3:1; the adhesive is epoxy resin, polymethyl methacrylate A mixture of acrylate, cationic starch, and sodium hydroxide in a mass ratio of 6:3:3:0.1.

[0026] The preparation method of the low shrinkage capacitor diaphragm comprises the f...

Embodiment 2

[0033] A capacitor diaphragm with low shrinkage rate, which is made of the following raw materials in parts by weight: 65 parts of polypropylene fiber, 16 parts of polyester fiber, 20 parts of polyacrylonitrile, 10 parts of polyisobutylene, polyoxymethylene fiber 10 parts, 8 parts of nano-carbon fiber, 20 parts of unsaturated polyester resin, 3 parts of adipic acid, 90 parts of dimethylacetamide, 4 parts of titanium gypsum, 5 parts of calcium carbonate whiskers, 1.4 parts of titanium dioxide, tributyl citrate 0.8 parts of ester, 2 parts of zinc dibutyldithiocarbamate, 1.2 parts of antioxidant, and 2 parts of adhesive.

[0034] The antioxidant is a mixture of 2,6-tertiary butyl-4-methylphenol, didodecyl alcohol ester and trioctyl ester with a mass ratio of 1:3:1; the adhesive is epoxy resin, polymethyl methacrylate A mixture of acrylate, cationic starch, and sodium hydroxide in a mass ratio of 6:3:3:0.1.

[0035] The preparation method of the low shrinkage capacitor diaphragm ...

Embodiment 3

[0042] A capacitor diaphragm with low shrinkage rate, the capacitor diaphragm with low shrinkage rate is made of the following raw materials in parts by weight: 63 parts of polypropylene fiber, 14 parts of polyester fiber, 18 parts of polyacrylonitrile, 8 parts of polyisobutylene, polyoxymethylene fiber 9 parts, 6 parts of nano-carbon fiber, 18 parts of unsaturated polyester resin, 2.5 parts of adipic acid, 85 parts of dimethylacetamide, 3 parts of titanium gypsum, 4.5 parts of calcium carbonate whiskers, 1.2 parts of titanium dioxide, tributyl citrate 0.6 parts of ester, 1.5 parts of zinc dibutyldithiocarbamate, 1.1 parts of antioxidant, and 1.5 parts of adhesive.

[0043] The antioxidant is a mixture of 2,6-tertiary butyl-4-methylphenol, didodecyl alcohol ester and trioctyl ester with a mass ratio of 1:3:1; the adhesive is epoxy resin, polymethyl methacrylate A mixture of acrylate, cationic starch, and sodium hydroxide in a mass ratio of 6:3:3:0.1.

[0044] The preparation ...

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Abstract

The invention provides a low-shrinkage capacitor diaphragm and a preparation method thereof, and relates to the technical field of capacitor diaphragm processing. The low shrinkage capacitor diaphragm is made of the following raw materials in parts by weight: 60-65 parts of polypropylene fiber, 12-16 parts of polyester fiber, 15-20 parts of polyacrylonitrile, 6-10 parts of polyisobutylene, polyoxymethylene fiber 8‑10 parts, 4‑8 parts of carbon nanofiber, 15‑20 parts of unsaturated polyester resin, 2‑3 parts of adipic acid, 80‑90 parts of dimethylacetamide, 2‑4 parts of titanium gypsum, calcium carbonate crystal 4-5 parts of mustard, 1-1.4 parts of titanium dioxide, 0.4-0.8 parts of tributyl citrate, 1-2 parts of zinc dibutyldithiocarbamate, 1-1.2 parts of antioxidant, 1-2 parts of adhesive. The invention overcomes the deficiencies of the prior art, effectively reduces the shrinkage rate of the capacitor diaphragm, improves its isolation performance, and at the same time enhances the anti-oxidation and cold resistance of the capacitor diaphragm, prolongs the service life of the capacitor, saves resources, and is suitable for popularization in production and use.

Description

technical field [0001] The invention relates to the technical field of capacitor diaphragm processing, in particular to a low-shrinkage capacitor diaphragm and a preparation method thereof. Background technique [0002] Supercapacitor is a highly competitive energy storage device. Because it can realize fast charging, high current discharge, and has a charging life of more than 100,000 times, it plays an important role in some applications that require short-term high-rate discharge. . The power supply requirements of hybrid electric vehicles and electric vehicles have also aroused worldwide attention to supercapacitors, a new type of energy storage device. In the composition of supercapacitors, electrodes, electrolyte and separator paper play a decisive role in the performance of supercapacitors. At present, the electrodes and electrolytes of supercapacitors are research hotspots, but the research and attention on separators is not high. [0003] The separator paper of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/52H01G11/84C08J5/18C08L23/12C08L67/00C08L33/20C08L59/00C08L67/06C08K13/04C08K7/06C08K7/08C08K5/11C08K3/22C08K3/30
CPCC08J5/18C08J2323/12C08J2423/20C08J2433/20C08J2459/00C08J2467/00C08J2467/06C08K5/11C08K5/39C08K7/06C08K7/08C08K13/04C08K2003/2241C08K2003/3045C08K2201/011H01G11/52H01G11/84Y02E60/13
Inventor 万广文
Owner TONGLING CITY START ELECTRONICS MFG