Moisture resistant epoxy resin potting material and its preparation method

A technology of epoxy resin and liquid epoxy resin, applied in the direction of fixed capacitor shell/package, laminated capacitor, film/thick film capacitor, etc., it can solve the problem of abnormal capacitance attenuation or open circuit of capacitor, electrical failure to work normally, moisture resistance Insufficient sex and other problems, to achieve the effect of low odor, good moisture resistance, strong hardness

Active Publication Date: 2013-01-16
深圳塑镕电容器有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current capacitor packaging materials are all epoxy resin, but when the capacitor is working in a relatively humid environment, the metal plate of galvanized aluminum will often be oxidized, resulting in abnormal attenuation or open circuit of the capacitor capacity, resulting in abnormal electrical appliances Work
[0003] In order to overcome the shortcomings of existing epoxy resins with insufficient moisture resistance, the present invention proposes a moisture-resistant epoxy resin potting compound and its preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Moisture resistant epoxy resin potting material and its preparation method
  • Moisture resistant epoxy resin potting material and its preparation method
  • Moisture resistant epoxy resin potting material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Epoxy resin NPEL127 (South Asia): 100kg

[0021] Black paste (Guangzhou Bailian Synthesis): 4kg

[0022] Diluent (methyl glycidyl ether, Yangzhou Chenhua): 1Kg

[0023] Liquid flame retardant (dimethyl phosphate, Sancaido): 10Kg

[0024] Filler (aluminum hydroxide, Chalco): 120Kg

[0025] Defoamer (naphtha, Japan Shin-Etsu): 0.2Kg

[0026] Preparation of component A: According to the above weight, pour the epoxy resin NPEL127 into the mixer, soak the black paste with dimethyl methyl phosphate and methyl glycidyl ether, add it into the mixer, and stir it at a high speed to heat up to 50°C, add aluminum hydroxide after the viscosity decreases to 350mPa·s, add defoamer after stirring for about 30 minutes, continue stirring until uniform, without grinding and vacuuming;

[0027] Mix the above-prepared component A and methyltetrahydrophthalic anhydride (Shengshida) evenly in a ratio of 100:33. After potting the capacitor, put it in an oven and bake it at 80°C for 2 hours...

Embodiment 2

[0032] Epoxy resin GELR128E (Hongchang): 100Kg

[0033] White paste (Guangzhou Bailian Synthesis): 1Kg

[0034] Yellow paste (Huamao): 6Kg

[0035] Diluent (methyl glycidyl ether, Yangzhou Chenhua): 6Kg

[0036] Liquid flame retardant (dimethyl phosphate, Sansaido)): 9Kg

[0037] Filler (aluminum hydroxide, Chalco): 120Kg

[0038] Defoamer (methyl silicone oil, Nanjing Huayuan): 1.5Kg

[0039] Preparation of component A: according to the above ratio, pour the epoxy resin GELR128E into the mixer, soak the white paste and yellow paste with dimethyl methyl phosphate and methyl glycidyl ether, add them to the mixer, and stir at a high speed Heat up to 55°C, add aluminum hydroxide after the viscosity decreases to 420mPa·s, add defoamer after stirring for about 30 minutes, continue stirring until uniform, without grinding and vacuuming;

[0040] Mix component A and methyltetrahydrophthalic anhydride (Shengshida) evenly in a ratio of 100:44. After potting the capacitor, put it i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an epoxy resin potting material having an excellent moisture resistance, and its preparation method. The potting material comprises a component A and a component B, wherein the component comprises an epoxy resin, a liquid flame retardant, a filler, a color paste, a diluent and an antifoaming agent, and the weight ratio of the epoxy resin to the liquid flame retardant to the filler to the color paste to the diluent to the antifoaming agent is 100:5-20:50-200:4-15:0-20:0.1-3; and the component B is a curing agent, and the weight ratio of the component A to the component B is 100:30-45.

Description

technical field [0001] The invention relates to an epoxy resin potting compound and a preparation method thereof, in particular to an epoxy resin potting compound with excellent moisture resistance and a preparation method thereof. Background technique [0002] The current capacitor packaging materials are all epoxy resin, but when the capacitor is working in a relatively humid environment, the metal plate of galvanized aluminum will often be oxidized, resulting in abnormal attenuation or open circuit of the capacitor capacity, resulting in abnormal electrical appliances Work. [0003] In order to overcome the shortcoming of insufficient moisture resistance of existing epoxy resins, the present invention proposes a moisture-resistant epoxy resin potting compound and a preparation method thereof. Contents of the invention [0004] The object of the present invention is to provide an epoxy resin potting compound with long service life, low viscosity, low cost and excellent ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L63/00C08L63/02C08K13/02C08K5/521C08K3/22C08K3/02C08G59/42H01G4/33H01G4/224
Inventor樊红杰
Owner深圳塑镕电容器有限公司