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Encapsulation materials for large-capacity film capacitors

A packaging material and film capacitor technology, applied in the direction of hybrid box/shell/package, etc., can solve the problems of high thermal conductivity and low stress, and achieve the effect of good humidity and heat resistance, good flow performance, and improved low temperature impact resistance.

Inactive Publication Date: 2017-12-05
建伟电子科技(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stable electrical insulation performance of the invention can ensure long-term stable operation of large-capacity capacitors; high thermal conductivity and low stress can ensure that large-capacity capacitors can be used in harsh outdoor environments, and have excellent weather resistance and cold and heat shock resistance, and are compatible with metals and Good adhesion of plastic, can solve the problem of insulation packaging of large-capacity film capacitors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The encapsulation material of large-capacity film capacitor, described encapsulation material is mixed by A, B two kinds of components, and A component and B component weight ratio are 1:1.1;

[0034] The A component includes the following raw materials in parts by weight: 15 parts of bismaleimide modified phenolic resin; 5 parts of epoxy resin; 8 parts of ethyl acetate; 15 parts of butyl glycidyl ether;

[0035] The B component includes the following raw materials in parts by weight: 9 parts of modified amine curing agent; 9 parts of zinc N-ethyl-N-phenyldithiocarbamate; 6 parts of thermal conductivity reinforcing agent; tetrakis (4-hydroxyl 2 parts of pentaerythritol ester of -2,5-tert-butylphenylpropionate; 15 parts of anilinomethyltriethoxysilane; 2.5 parts of ethylimidazole; 0.6 parts of anti-settling agent; 0..5 parts of defoaming agent.

Embodiment 2

[0037] The encapsulation material of large-capacity film capacitor, described encapsulation material is mixed by A, B two kinds of components, and A component and B component weight ratio are 1:1.2;

[0038] The A component includes the following raw materials in parts by weight: 25 parts of bismaleimide modified phenolic resin; 9 parts of epoxy resin; 15 parts of ethyl acetate; 25 parts of butyl glycidyl ether;

[0039] The B component includes the following raw materials in parts by weight: 15 parts of modified amine curing agent; 15 parts of zinc N-ethyl-N-phenyldithiocarbamate; 12 parts of thermal conductivity reinforcing agent; tetrakis (4-hydroxy -2,5-tert-butylphenyl propionate) 3 parts of pentaerythritol ester; 25 parts of anilinomethyltriethoxysilane; 3.5 parts of ethyl imidazole; 1.6 parts of anti-settling agent; 1.5 parts of defoamer.

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PUM

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Abstract

The invention discloses a packaging material for a large-capacity film capacitor. The packaging material is formed by mixing two components, A and B. The component A includes the following raw materials: bismaleimide modified phenolic resin; epoxy Resin; ethyl acetate and butyl glycidyl ether; component B includes the following raw materials: modified amine curing agent; N-ethyl-N-phenyl zinc dithiocarbamate; thermally conductive reinforcing agent; four (4- hydroxy‑2,5‑tert-butylphenylpropionate) pentaerythritol ester; anilinomethyltriethoxysilane; ethylimidazole; anti-settling and defoaming agents. The packaging material provided by the invention has stable electrical insulation performance, which can ensure long-term stable operation of large-capacity capacitors; high thermal conductivity and low stress can ensure that large-capacity capacitors can be used in harsh outdoor environments, and has excellent weather resistance and cold and heat resistance. Impact resistance, good adhesion to metal and plastic, can solve the problem of insulation packaging of large-capacity film capacitors.

Description

technical field [0001] The invention relates to the field of electronic packaging materials, in particular, the invention relates to a packaging material without large-capacity film capacitors. Background technique [0002] All countries in the world are starting to research and develop electric double layer capacitors, that is, super large capacity capacitors. It stores energy by polarizing the electrolyte, and the energy storage process is reversible. Therefore, supercapacitors can be repeatedly charged and discharged hundreds of thousands of times, and are widely used in various fields such as new energy vehicles, power systems and grid transformation, instrumentation, backup power supplies, and high-speed rail. Large-capacity film capacitors are larger than ordinary film capacitors, and multiple capacitors are connected in series or in parallel, with complex distribution and a wide range of applications. Therefore, large-capacity film capacitors need packaging material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08L63/00C08K13/02C08K5/1515C08K5/134C08K5/544C08K3/34H01G11/78
CPCY02E60/13
Inventor 郑春秋
Owner 建伟电子科技(广州)有限公司