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Corona-resistant polyimide film and preparing method thereof

A technology of polyimide film and polyimide acid, which is applied in the field of corona-resistant polyimide film, can solve the problems of not reaching industrial production and poor corona resistance performance, and achieve high yield and production The effect of excellent workmanship and good corona resistance

Active Publication Date: 2008-12-17
JIANGSU ICE CITY INSULATION MATERIALS STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The domestic research on corona-resistant polyimide film is still doing some exploratory theoretical research in the laboratories of universities or research institutes, which is far from reaching the level of industrial production.
As for the analysis of the corona-resistant polyimide film of DuPont Company in the United States, we believe that its corona resistance performance is not good enough.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] It mainly includes pyromellitic dianhydride, 4.4'diaminodiphenyl ether and nano-level metal oxides, and the particle size of the nano-level metal oxides is ≤50 nanometers. The metal oxide titanium dioxide (it can also be aluminum oxide or silicon dioxide, or a mixture of two or three of the three). The proportion of each component is: pyromellitic dianhydride and 4.4'diaminodiphenyl ether at a molar ratio of 1:1, based on the weight of the mixture of pyromellitic dianhydride and 4.4'diaminodiphenyl ether 1. Nano metal oxide is 4%.

[0017] The manufacturing method of the above corona-resistant polyimide film is as follows:

[0018] G) Preparation of polyimide acid solution—mix pyromellitic dianhydride and solution N,N' dimethylacetamide in the reaction kettle, and then add 4.4'diaminodiphenyl ether to react to form polyimide Amino acid solution

[0019] H) Suspension production-combine nano-scale metal oxides (including one or more of titanium dioxide, aluminum oxide and si...

Embodiment 2

[0025] A corona-resistant polyimide film of the same embodiment, the difference is that the weight of the mixture of pyromellitic dianhydride and 4.4' diaminodiphenyl ether is 1, and the nano-level metal oxide is 8%.

Embodiment 3

[0027] A corona-resistant polyimide film of the same embodiment, the difference is that the weight of the mixture of pyromellitic dianhydride and 4.4' diaminodiphenyl ether is 1, and the nano-level metal oxide is 12%.

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Abstract

The invention relates to a polyimide film with corona resistance, which essentially comprises pyromellitic dianhydride, 4.4' diamido-diphenyl ether and nanoscale metallic oxide; wherein, the particle size of the nanoscale metallic oxide is less than or equal to 50 nanometers. By adopting the technical proposal, the invention has the advantages as follows: as nanophase materials are adopted by the invention and the nanoscale metallic oxide and N, N' dimethylacetamide are prepared into stable and uniform suspended substance in a high-speed cutting and scatter, the product adopting the polyimide film with corona resistance produced in the invention has excellent performance of corona resistance, good production technology and high rate of finished products.

Description

Technical field [0001] The invention relates to a chemical product, in particular to a corona-resistant polyimide film and a manufacturing method thereof. Background technique [0002] The domestic research on corona-resistant polyimide film is still doing some exploratory theoretical research in the laboratory of universities or research institutes, which is far from the level of industrial production. In the analysis of the corona-resistant polyimide film from DuPont, we believe that its corona resistance is not good enough. Summary of the invention [0003] In view of the above shortcomings, the present invention provides a corona-resistant polyimide film and a manufacturing method thereof, which have good corona resistance, excellent manufacturing technology and high yield. [0004] In order to achieve the above objectives, the present invention adopts the following technical solutions, a corona-resistant polyimide film, which mainly includes pyromellitic dianhydride, 4.4'di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L79/08C08K5/17C08K5/09C08K3/36C08K3/22
Inventor 朱艾成许惠麟郭振报聂伟民朱浩杨广生孙志荣
Owner JIANGSU ICE CITY INSULATION MATERIALS STOCK
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