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A kind of high temperature resistant film capacitor base film and preparation method thereof

A technology of film capacitors and high temperature resistance, which is applied in the field of electronic components, can solve the problems of reduced withstand voltage, shortened life, and influence on the service life of capacitors, so as to improve tensile and high temperature resistance, stability and duration, and good Promoting the effect of using value

Active Publication Date: 2018-08-21
ANHUI FEIDA ELECTRICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When film capacitors are used under high-frequency or high-pulse conditions, the pulse current passing through the capacitor will cause the capacitor itself to heat up and heat up, resulting in problems such as increased self-healing points, reduced withstand voltage, and shortened life.
At present, the temperature resistance of polyester base film of most film capacitors is average, which affects the service life of capacitors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A base film of a high-temperature-resistant film capacitor is made of the following substances by weight:

[0021] 150 parts of polyester, 15 parts of modified kaolin, 5 parts of phenolic resin, 6 parts of bisphenol A epoxy resin, 5 parts of nano-silica, 4 parts of nano-boron fiber, 1 part of methyl methacrylate, 10 parts of poly Styrene, 3 parts of propyl gallate, 2 parts of propylene glycol methyl ether, 1 part of ultraviolet absorber, 1 part of antioxidant; the modified kaolin is made of the following parts by weight: 100 parts of kaolin, 5 parts of stearin calcium carbonate, 3 parts neutral barium dinonyl naphthalene sulfonate, 2 parts methyltriacetoxysilane, 3 parts zirconium dioxide, 5 parts ethyl cellulose.

[0022] Further, the preparation method of the modified kaolin comprises the following steps:

[0023] (1) Soak kaolin in a phosphoric acid solution with a mass fraction of 5% for 2 hours, take it out, and then soak it in a sodium hydroxide solution with a m...

Embodiment 2

[0030] A base film of a high-temperature-resistant film capacitor is made of the following substances by weight:

[0031] 160 parts of polyester, 18 parts of modified kaolin, 6 parts of phenolic resin, 5 parts of bisphenol A epoxy resin, 4 parts of nano-silica, 6 parts of nano-boron fiber, 2 parts of methyl methacrylate, 13 parts of poly Styrene, 2 parts of propyl gallate, 2 parts of propylene glycol methyl ether, 1.5 parts of ultraviolet absorber, 1.5 parts of antioxidant; the modified kaolin is made of the following parts by weight: 110 parts of kaolin, 8 parts of stearin calcium carbonate, 4 parts of neutral barium dinonylnaphthalene sulfonate, 3 parts of methyltriacetoxysilane, 5 parts of zirconium dioxide, and 6 parts of ethyl cellulose. All the other method steps are the same as in Example 1.

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PUM

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Abstract

The invention discloses a high-temperature resistant thin film capacitor basal film and belongs to the technical field of electronic elements. The high-temperature resistant thin film capacitor basal film is specifically prepared from polyester, modified kaolin, phenolic resin, bisphenol A-type epoxy resin, nano silica, nano boron fibers, methyl methacrylate, polystyrene, propylgallate, propylene glycol methyl ether, UV absorbers and antioxidants. The modified kaolin is made of kaolin, calcium stearate, neutral dinonyl-naphthalenesulfonic acid barium salt, methyl 3 acetoxyl silane, zirconium dioxide and ethyl cellulose. All material components are matched reasonably, the stretch-proof performance and high-temperature resistance of the prepared basal film are well improved, the using stability is improved, the using duration is prolonged, the service life of a capacitor can be prolonged by 15% or more, and the high-temperature resistant thin film capacitor basal film has great application and popularization value.

Description

technical field [0001] The invention belongs to the technical field of electronic components, and in particular relates to a high-temperature-resistant film capacitor base film and a preparation method thereof. Background technique [0002] Film capacitors are widely used in analog circuits due to their excellent characteristics such as non-polarity, high insulation resistance, excellent frequency characteristics (broad frequency response), and low dielectric loss. Film capacitors use metal foil as an electrode, and it is laminated with plastic base films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and then wound into a cylindrical capacitor; in all Among the plastic film capacitors, the characteristics of polypropylene (PP) capacitors and polystyrene (PS) capacitors are the most significant. Capacitors made of polypropylene films have low thermal shrinkage, stable performance, high temperature resistance, and high pressure resistance. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/00C08L61/06C08L63/00C08L25/06C08L1/28C08K13/06C08K9/06C08K9/04C08K3/34C08K3/36C08K7/06B29C55/28
CPCB29C55/28C08J5/18C08J2367/00C08J2461/06C08K2201/011C08L67/00C08L2201/08C08L2203/16C08L2203/20C08L2205/035C08L61/06C08L63/00C08L25/06C08L1/28C08K13/06C08K9/06C08K9/04C08K3/346C08K3/36C08K7/06
Inventor 胡忠胜华玲萍吴良军
Owner ANHUI FEIDA ELECTRICAL TECH CO LTD