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A fire-proof and breakdown-resistant film capacitor

A thin-film capacitor and breakdown-resistant technology, which is applied in the direction of thin-film/thick-film capacitors, laminated capacitors, fixed capacitor dielectrics, etc., can solve the problems of limited application range and poor voltage breakdown resistance, and achieve enhanced breakdown resistance. Effect of improving bond energy and improving high temperature resistance

Active Publication Date: 2018-12-18
GUANGDONG FENGMING ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the metallized polypropylene film is widely used in the market to be wound into a capacitor core, but the simple polypropylene film capacitor has poor voltage breakdown resistance, which greatly limits its application range.

Method used

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  • A fire-proof and breakdown-resistant film capacitor

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Effect test

Embodiment 1

[0019] A fire-proof and breakdown-resistant film capacitor, the composite film made of macromolecular copolymer modified polypropylene masterbatch is used as the dielectric of the film capacitor.

[0020] Further, the preparation method of the macromolecular copolymer modified polypropylene masterbatch is:

[0021] Weigh 120 parts of trans-2-butene, 30 parts of acrylonitrile, 120 parts of diethyl fumarate, 1250 parts of deionized water, 10 parts of emulsifier, 5 parts of nano-bentonite dispersion, and 0.03 parts of activator in parts by weight. Add one part to the reaction kettle, stir at 1500r / min for 2 hours, then continue to feed nitrogen gas for 20min, then heat to 35°C, keep warm for 10min, then add 1.2 parts of initiator, stir evenly, keep warm in a 35°C water bath React at low temperature for 10 hours, then discharge, purify the reaction product, and dry to constant weight to obtain a macromolecular copolymer;

[0022] The macromolecular copolymer and polypropylene res...

Embodiment 2

[0032] A fire-proof and breakdown-resistant film capacitor, the composite film made of macromolecular copolymer modified polypropylene masterbatch is used as the dielectric of the film capacitor.

[0033] Further, the preparation method of the macromolecular copolymer modified polypropylene masterbatch is:

[0034] Weigh 150 parts of trans-2-butene, 50 parts of acrylonitrile, 160 parts of diethyl fumarate, 1300 parts of deionized water, 12 parts of emulsifier, 7 parts of nano-bentonite dispersion, and 0.08 parts of activator in parts by weight. Add one part to the reaction kettle, stir at 1500r / min for 3 hours, then continue to feed nitrogen gas for 20min, then heat to 35°C, keep warm for 10min, then add 1.5 parts of initiator, stir evenly, keep warm in a 35°C water bath React at low temperature for 12 hours, then discharge, purify the reaction product, and dry to constant weight to obtain a macromolecular copolymer;

[0035] The macromolecular copolymer and polypropylene res...

Embodiment 3

[0045] A fire-proof and breakdown-resistant film capacitor, the composite film made of macromolecular copolymer modified polypropylene masterbatch is used as the dielectric of the film capacitor.

[0046] Further, the preparation method of the macromolecular copolymer modified polypropylene masterbatch is:

[0047] Weigh 130 parts of trans-2-butene, 40 parts of acrylonitrile, 150 parts of diethyl fumarate, 1270 parts of deionized water, 11 parts of emulsifier, 6 parts of nano-bentonite dispersion, 0.05 parts of activator Add one part to the reaction kettle, stir at 1500r / min for 2.3 hours, then continue to feed nitrogen gas for 20min, then heat to 35°C, keep warm for 10min, then add 1.4 parts of initiator, stir evenly, keep warm in a 35°C water bath React at low temperature for 11 hours, then discharge, purify the reaction product, and dry to constant weight to obtain a macromolecular copolymer;

[0048] The macromolecular copolymer and polypropylene resin are uniformly mixed...

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Abstract

The invention discloses a fire-proof and breakdown-resistant film capacitor and relates to the technical field of film capacitors, comprises a composite film made of a macromolecular copolymer modified polypropylene master batch as a dielectric of a film capacitor, A composite film made of macromolecular copolymer modified polypropylene masterbatch is used as dielectric of film capacitor, Throughthe modification of polypropylene film, The tensile properties of the polypropylene film were improved remarkably, especially the macromolecular copolymer was used to modify the polypropylene masterbatch, which greatly improved the molecular structure of the composite film, increased the bond energy between the molecules, greatly improved its high temperature resistance, reduced the loss coefficient, and achieved remarkable economic benefits.

Description

technical field [0001] The invention belongs to the technical field of film capacitors, and in particular relates to a fireproof and breakdown resistant film capacitor. Background technique [0002] Capacitors are widely used in integrated circuits. They are suitable for chips and lead circuits that require DC blocking and RF bypass. They can also be used as tuning components in filters, oscillators and matching networks. At present, the metallized polypropylene film is mostly used in the market to be wound into a capacitor core, but the simple polypropylene film capacitor has poor voltage breakdown resistance, which greatly limits its application range. Contents of the invention [0003] The object of the present invention is to provide a fireproof and breakdown resistant film capacitor aiming at the existing problems. [0004] The present invention is achieved through the following technical solutions: [0005] A fire-proof and breakdown-resistant film capacitor, the c...

Claims

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Application Information

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IPC IPC(8): H01G4/18H01G4/33C08F210/08C08F220/44C08F222/14C08J3/22
CPCC08F210/08C08F222/14C08J3/226C08J2423/12C08J2423/20C08J2435/02H01G4/18H01G4/33C08F220/44
Inventor 徐培培
Owner GUANGDONG FENGMING ELECTRONICS TECH
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