Film capacitor sealing wax and preparation method thereof

A film capacitor, sealing wax technology, applied in the direction of film/thick film capacitor, fixed capacitor shell/package, laminated capacitor, etc., can solve the problems of failure, performance aging, accelerated aging, etc., to achieve good affinity, high production efficiency, The effect of preventing the penetration of water vapor

Active Publication Date: 2017-05-31
江苏聚冠新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Film capacitors encapsulated with these microcrystalline waxes often find performance aging and failure. After research and testing, it is found that the failure is mainly caused by the comprehensive influence of temperature, humidity and electrical stress. Especially when there is moisture, the voltage will also cause electrolysis. , accelerate the aging process and fail
Therefore, the film capacitor test is carried out according to the IEC and JIS standards at a temperature of 40°C, 93%RH, and a time of 21 to 56 days, and is changed to a temperature of 85°C, 85%RH, and a time of more than 168 hours. Double 85 test", currently there is no microcrystalline wax, and the film capacitors encapsulated with it can pass the "double 85 test"

Method used

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  • Film capacitor sealing wax and preparation method thereof
  • Film capacitor sealing wax and preparation method thereof
  • Film capacitor sealing wax and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Present embodiment film capacitor sealing wax, each component is as follows:

[0023]

[0024] Add microcrystalline wax and synthetic wax in turn according to the formula amount, stir at 115°C-135°C for 90min-120min; cool down to 100°C-105°C, add the formula amount of amino silicone oil and alkenyl succinate, stir for 30min, filter After cooling and forming, it is ready.

Embodiment 2

[0026] Present embodiment thin film capacitor sealing wax, prepares components as follows:

[0027]

[0028] Add microcrystalline wax and synthetic wax in turn according to the formula amount, stir at 115°C-135°C for 90min-120min; cool down to 100°C-105°C, add the formula amount of amino silicone oil and alkenyl succinate, stir for 30min, filter After cooling and forming, it is ready.

Embodiment 3

[0030] Present embodiment film capacitor sealing wax, each component is as follows:

[0031]

[0032] Add microcrystalline wax and synthetic wax in turn according to the formula amount, stir at 115°C-135°C for 90min-120min; cool down to 100°C-105°C, add the formula amount of amino silicone oil and alkenyl succinate, stir for 30min, filter After cooling and forming, it is ready.

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Abstract

The invention relates to film capacitor sealing wax and a preparation method thereof. The film capacitor sealing wax comprises, by weight percentage, 50-80% of microcrystalline wax, 10-35% of synthetic wax, 5-15% of amino silicone oil, and 0.2-2% of alkenyl succinic acid ester. The sealing wax of the invention is resistant to both high temperature and moisture permeation, and does not affect the electrical performance.

Description

technical field [0001] The invention specifically relates to a film capacitor sealing wax and a preparation method thereof. Background technique [0002] Film capacitors are one of the important components widely used in various fields of the electronics industry. Electronic products have emerged in an endless stream for decades, but they have always maintained strong vitality. In the production of traditional film capacitors, liquid epoxy resin is generally used for encapsulation. The encapsulation process includes: preheating the capacitor core for about 80 minutes, and then performing vacuum impregnation in the liquid epoxy resin prepared according to a certain proportion. , and finally put it into the oven to bake and solidify for about 150 minutes. However, this encapsulation method has certain requirements on the viscosity of the liquid epoxy resin. The liquid epoxy resin can only be scrapped after 6 to 8 hours of use and cannot be reused. It also pollutes the environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/224H01G4/33C08L91/06C08L83/08
CPCC08L91/06C08L2203/206C08L2205/025C08L2205/03H01G4/224H01G4/33C08L83/08
Inventor 潘丹
Owner 江苏聚冠新材料科技有限公司
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