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A kind of polypropylene film capacitor filling glue and preparation method thereof

A polypropylene film and capacitor technology, applied in the field of capacitors, can solve problems such as general compatibility and easy cracking, and achieve good fluidity, prevent internal cracking, and good dispersion

Active Publication Date: 2020-11-10
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent uses polyester resin, which has general compatibility with epoxy resin and is easy to crack

Method used

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  • A kind of polypropylene film capacitor filling glue and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of polypropylene film capacitor filling glue is made of the following raw materials in parts by weight:

[0028] 40 parts of epoxy resin, 14 parts of silicone resin, 25 parts of aluminum hydroxide, 10 parts of red phosphorus, 7 parts of modified aluminum nitride powder, 20 parts of thinner, 20 parts of curing agent and 1 part of curing accelerator;

[0029] The preparation method of described silicone resin comprises the following steps:

[0030] Adjust the pH to 4-5 with 10 parts of phenyltrimethoxysilane, 5 parts of absolute ethanol, 15 parts of water, and 30% hydrochloric acid, raise the temperature to 60°C, reflux and stir for 3 hours, and remove water and ethanol after the reaction is completed, that is have to;

[0031] The preparation method of the modified aluminum nitride powder comprises the following steps: adding 5 times the weight of isopropanol and 4% weight of titanate coupling agent to the aluminum nitride powder, ultrasonically treating it for 4...

Embodiment 2

[0041] A kind of polypropylene film capacitor filling glue is made of the following raw materials in parts by weight:

[0042] 42 parts of epoxy resin, 16 parts of silicone resin, 28 parts of aluminum hydroxide, 12 parts of red phosphorus, 8 parts of modified aluminum nitride powder, 21 parts of thinner, 22 parts of curing agent and 1.5 parts of curing accelerator;

[0043] The preparation method of described silicone resin comprises the following steps:

[0044] Adjust the pH to 4-5 with 12 parts of phenyltrimethoxysilane, 5 parts of absolute ethanol, 17 parts of water, and 30% hydrochloric acid, raise the temperature to 65°C, reflux and stir for 2 hours, and remove water and ethanol after the reaction is completed. have to;

[0045] The preparation method of the modified aluminum nitride powder comprises the following steps: adding 6 times the weight of isopropanol and 3% weight of titanate coupling agent to the aluminum nitride powder, ultrasonically treating it for 40 min...

Embodiment 3

[0055] A kind of polypropylene film capacitor filling glue is made of the following raw materials in parts by weight:

[0056] 44 parts of epoxy resin, 18 parts of silicone resin, 30 parts of aluminum hydroxide, 15 parts of red phosphorus, 10 parts of modified aluminum nitride powder, 24 parts of thinner, 24 parts of curing agent and 2 parts of curing accelerator;

[0057] The preparation method of described silicone resin comprises the following steps:

[0058] Adjust the pH to 4-5 with 13 parts of phenyltrimethoxysilane, 6 parts of absolute ethanol, 19 parts of water, and 30% hydrochloric acid, raise the temperature to 70°C, reflux and stir for 2.5 hours, and remove water and ethanol after the reaction. instant;

[0059] The preparation method of the modified aluminum nitride powder comprises the following steps: adding 7 times the weight of isopropanol and 5% by weight of titanate coupling agent to the aluminum nitride powder, ultrasonically treating for 30 minutes, filter...

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Abstract

The invention discloses polypropylene film capacitor filling rubber and a preparation method thereof. The filling rubber is prepared from the following raw materials in parts by weight: 40-50 parts ofepoxy resin, 14-22 parts of organic silicon resin, 25-35 parts of aluminum hydroxide, 10-23 parts of red phosphorus, 7-15 parts of modified aluminum nitride powder, 20-30 parts of diluent, 20-30 parts of curing agent and 1-3 parts of curing accelerant. The filling rubber disclosed by the invention is good in flowability, excellent in flame retardant property and heat resistance and good in impacttoughness, and the inside of the filling rubber is effectively prevented from being cracked.

Description

technical field [0001] The invention belongs to the technical field of capacitors, and in particular relates to a polypropylene film capacitor filling glue and a preparation method thereof. Background technique [0002] Polypropylene film capacitors, as an important electronic component, are widely used in DC and pulse circuits of TV sets, tape recorders, DVDs and various communication equipment and electronic instruments. The filler of polypropylene film capacitor plays an important role in the electrical performance, insulation performance and heat resistance of the capacitor, which directly affects the application of the capacitor. In recent years, epoxy resin has been poured between the capacitor shell and core due to its excellent mechanical properties, adhesion, electrical insulation and chemical stability, but the electrical properties of this type of capacitor are poor. [0003] The Chinese patent with the notification number CN105820512B discloses a filling process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L83/04C08K3/22C08K3/02C08K9/04C08K3/28H01G4/33H01G4/224
CPCC08K2003/026C08K2003/2227C08K2003/282C08L63/00C08L2201/08C08L2203/20H01G4/224H01G4/33C08L83/04C08K3/22C08K3/02C08K9/04C08K3/28
Inventor 王爱华赵庆怀盛智铭姬晓旭傅瑜
Owner NANYANG NORMAL UNIV
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