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Capacitor film containing modified talc and preparation method thereof

The technology of capacitor film and talc powder is applied in the field of capacitor film containing modified talc powder and its preparation, which can solve the problems of large demand, high price, and difficulty in meeting the film, and achieves high heat-sealing strength and heat-sealing performance. Good, enhance the effect of barrier and air tightness

Active Publication Date: 2013-03-13
BENGBU LIQUN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Film capacitors use metal foil as an electrode, which is stacked with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and 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. Of course, the price of these two capacitors is also relatively high. The quality of the capacitor film directly affects the service life and product performance of the capacitor. The demand for films is large and there are many types. It is difficult to meet the requirements of the market by using a single raw material to produce films, but each raw material has its own shortcomings, so the produced films are difficult to meet the needs of various situations

Method used

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Examples

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Embodiment 1

[0016] Embodiment 1: the capacitor film that contains modified talcum powder, the parts by weight of its constituent raw materials are: metallocene polypropylene resin 60, bisphenol A type polycarbonate 40, homopolypropylene 12, epoxy linseed oil 4, Polyvinyl alcohol 2.5, aluminum hydroxide 1.5, polyisobutylene 1.5, diatomaceous earth 10, ferrocene 1.5, poly-4-methyl-1-pentene 1.2, vermiculite 6, modified talc powder 4, antioxidant 1010 1.0, propylene glycol adipate polyester 0.8, epoxy dioctyl tetrahydrophthalate 0.4, calcium stearate 4 and modified tree ash 2.4.

[0017] The preparation method of the capacitor film containing modified talcum powder, comprises the following steps:

[0018] (1) Weigh the diatomite according to the weight of the raw materials, first soak the diatomite in 20-25% hydrogen peroxide for 3-4 hours, roast it at 400-450°C for 3-4 hours, and grind it into 400-45 Mesh powder;

[0019] (2) Add epoxy linseed oil and polyvinyl alcohol into the mixer acco...

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PUM

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Abstract

The invention discloses a capacitor film containing modified talc and a preparation method thereof. The capacitor film comprises the following raw materials, by weight: 57-63 parts of metallocene polypropylene resin, 35-45 parts of bisphenol A polycarbonate, 10-15 parts of homo-polypropylene, 3-5 parts of epoxy linseed oil, 2-3 parts of polyvinyl alcohol, 1-2 parts of aluminum hydroxide, 1-2 parts of polyisobutylene, 8-12 parts of diatomite, 1-2 parts of ferrocene, 1.0-1.5 parts of poly-4-methyl-1-pentene, 5-7 parts of vermiculite, 3-5 parts of modified talcum powder, 0.7-1.3 parts of an antioxidant 1010, 0.7-0.9 part of propylene glycol adipate polyester, 0.3-0.5 part of di(2-ethylhexyl)-4,5-epoxy tetrahydrophthalate, 3-5 parts of calcium stearate and 2.2-2.6 parts of modified wood ash. The preparation method provided by the invention is simple; addition of diatomite, modified attapulgite and modified wood ash enhances resistance and air tightness of the film; besides, the capacitor film has characteristics of good pressure resistance, impact resistance, high heat sealing strength and good heat sealing performance.

Description

technical field [0001] The invention relates to a capacitor film material, in particular to a capacitor film containing modified talcum powder and a preparation method thereof. Background technique [0002] Film capacitors use metal foil as an electrode, which is stacked with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and 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. Of course, the price of these two capacitors is also relatively high. The quality of the capacitor film directly affects the service life and product performance of the capacitor. The demand for films is large and there are many types. It is difficult to meet the requirements of the market by using a single raw material to produce films, but each raw material has its shortcomings, so the produced films are difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L69/00C08L29/04C08L23/20C08K13/06C08K3/34C08K5/098C08K3/22
Inventor 赵建立
Owner BENGBU LIQUN ELECTRONICS
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