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

A polypropylene film, polypropylene base film technology, applied in capacitors, laminated capacitors, film/thick film capacitors and other directions, can solve the problems of poor metallized coating fastness, poor heat resistance, poor electrical properties, etc. Significant high temperature resistance, improve electrical performance, solve the effect of easy falling off

Active Publication Date: 2021-08-24
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a polypropylene film for high-temperature-resistant capacitors and a preparation method thereof to solve the problem of poor heat resistance and poor electrical properties of the polypropylene film used in capacitors in the prior art, as well as poor fastness and easy Problems such as shedding, non-abrasion resistance and thermal deformation

Method used

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  • A kind of polypropylene film for high temperature resistant capacitor and preparation method thereof
  • A kind of polypropylene film for high temperature resistant capacitor and preparation method thereof
  • A kind of polypropylene film for high temperature resistant capacitor and preparation method thereof

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Embodiment 1

[0036] In a preferred embodiment, this embodiment provides a polypropylene film for high temperature resistant capacitors, comprising a polypropylene base film layer, one side of the polypropylene base film layer is connected with a high temperature resistant layer, and the other side is coated with a weather resistant layer, And the high temperature-resistant layer is a honeycomb structure formed after the waste metallized polypropylene film is recycled and processed, and the weather-resistant layer includes zinc coating and aluminum coating, and the voids of the honeycomb structure are filled with dielectric materials.

[0037] The preparation process of the high-temperature-resistant layer is as follows: reclaim the discarded metallized polypropylene film and soak it in a sulfuric acid washing solution with a concentration of 10-15% for 10-15 minutes; Soak in the acid washing solution of -6.2 for 30-60min, the acid washing solution described here is sulfuric acid with a mass...

Embodiment 2

[0046] This embodiment should be understood as including all the features of the foregoing embodiments, and further optimized on the basis thereof. Therefore, this embodiment provides a polypropylene film for high-temperature-resistant capacitors and a preparation method thereof. The polypropylene film includes A polypropylene base film layer, one side of the polypropylene base film layer is connected with a high-temperature resistant layer, and the other side is coated with a weather-resistant layer, and the weather-resistant layer includes a zinc coating and an aluminum coating.

[0047] The preparation method of described polypropylene film, concrete steps are as follows:

[0048] S1. The preparation process of the high-temperature-resistant layer is as follows: recycle the discarded metallized polypropylene film and soak it in a sulfuric acid washing solution with a concentration of 10% for 10 minutes; after the first water washing, continue to put it into an acid washing s...

Embodiment 3

[0056] This embodiment should be understood as at least including all the features of any one of the preceding embodiments, and further optimized on the basis of it. Therefore, this embodiment provides a polypropylene film for high temperature resistant capacitors and its preparation method. The propylene film includes a polypropylene base film layer, one side of the polypropylene base film layer is connected with a high-temperature resistant layer, and the other side is coated with a weather-resistant layer, and the weather-resistant layer includes a zinc coating and an aluminum coating.

[0057] The preparation method of described polypropylene film, concrete steps are as follows:

[0058] The preparation process of the S1 high temperature resistant layer is as follows: recycle the discarded metallized polypropylene film and soak it in a sulfuric acid washing solution with a concentration of 15% for 15 minutes; after the first water washing, continue to put it in an acid wash...

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Abstract

The invention provides a polypropylene film for a high temperature resistant capacitor and a preparation method thereof, which comprises a polypropylene base film layer, a high temperature resistant layer and a weather resistant layer respectively arranged on both sides of the polypropylene base film layer, and the high temperature resistant layer Adding Mn element and nano-graphene and preparing it into a honeycomb structure helps to improve the high temperature resistance of the polypropylene film as a whole, and the addition of metal ions to the polypropylene base film layer during the preparation process is helpful for the subsequent In the temperature-rising diffusion treatment step, the tightness of the polypropylene base film layer and the galvanized layer enables the galvanized layer and the aluminum-coated layer to not only form a dense coating and achieve the effect of weather resistance, but also solve the problem that the coating is easy to fall off in the prior art. No wear and thermal deformation problems. And the prepared polypropylene film is used in the preparation of capacitors. The nano-graphene contained in the high-temperature resistant layer can improve the electrical performance of the capacitor, and also has the advantages of high current-carrying capacity, long service life and easy storage of the capacitor.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a polypropylene film for high-temperature-resistant capacitors and a preparation method thereof. Background technique [0002] As an important electronic component, polypropylene film capacitor has many excellent characteristics, and is widely used in DC and pulse circuits of TV sets, tape recorders, DVDs and various communication equipment and electronic instruments. In the prior art, some materials are poured between the shell and the core of the capacitor to improve the electrical performance, insulation performance and heat resistance of the capacitor, but there are often problems of uneven pouring, air bubbles and cracks in the process of pouring materials , and the heat resistance can not meet the needs of consumers. In addition, for capacitors that use polypropylene film as the capacitor inducer, in the environment where the temperature in the engine room ri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/14H01G4/33H01G2/14H01G4/002C23C14/20C23C14/16C23C14/24C23C14/58
CPCC23C14/16C23C14/20C23C14/24C23C14/5806H01G2/14H01G4/002H01G4/14H01G4/33
Inventor 张晨晨丁国成杨海涛吴兴旺尹睿涵朱太云秦少瑞胡啸宇
Owner STATE GRID CORP OF CHINA