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Corona resistance polyimide film preparing method, corona resistance polyimide film and preparing system of corona resistance polyimide film

A technology of polyimide film and preparation system, applied in flat products, other household appliances, applications, etc., can solve problems such as unreachable

Active Publication Date: 2020-02-04
SUZHOU INST OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic products rely heavily on imported DuPont corona-resistant polyimide films because they cannot achieve satisfactory results. Technology, not only has important theoretical significance, but also has great practical engineering significance and application prospects

Method used

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  • Corona resistance polyimide film preparing method, corona resistance polyimide film and preparing system of corona resistance polyimide film
  • Corona resistance polyimide film preparing method, corona resistance polyimide film and preparing system of corona resistance polyimide film
  • Corona resistance polyimide film preparing method, corona resistance polyimide film and preparing system of corona resistance polyimide film

Examples

Experimental program
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Effect test

Embodiment 1

[0045] (1) Add 4,4'-diaminodiphenyl ether (ODA) into the reaction device, and then add N,N-dimethylacetamide (DMAc) so that the solid content is 10%, and add an electric stirrer to fully stir Mix evenly, and the rotating speed is controlled at 500-1500 revolutions per minute. After the ODA is completely dissolved in DMAc, weigh PMDA (pyromellitic dianhydride) in an equimolar ratio to ODA, and add it to the reaction device in batches for multiple times. This feeding process is about 0.5-1 hour, until the phenomenon of "climbing the rod" occurs, the speed is appropriately reduced, controlled at 50-500 rpm, and the stirring is continued for 6-12 hours to ensure that ODA and PMDA are fully polymerized, and finally the product with High molecular weight pure PAA glue;

[0046] (2) Add ODA to the reaction device, then add DMAc, so that the solid content is 10%, add an electric stirrer to fully stir and mix evenly, and the speed is controlled at 500-1500 rpm. After ODA is completely ...

Embodiment 2

[0052] (1) Add ODA in the reaction device, then add a certain amount of DMAc, so that the solid content is 10%, increase the electric stirrer, and the rotating speed is controlled at 500-1500 revolutions per minute, fully stir and mix evenly, until ODA is completely mixed in DMAc After dissolving, weigh the PMDA with the same molar ratio as ODA, and add it to the reaction device several times in batches. The feeding process is about 1 hour, until the phenomenon of "rod climbing" occurs, and the speed is appropriately reduced, controlled at 50-500 rpm , continue to keep stirring for 6-12 hours to ensure that ODA and PMDA are fully polymerized, and finally obtain pure PAA glue with high molecular weight;

[0053] (2) Add ODA to the reaction device, then add a certain amount of DMAc (solid content 10%), add an electric stirrer to fully stir and mix evenly (rotating speed is controlled at 500-1500 rpm), until ODA is completely dissolved in DMAc Finally, add fumed alumina powder wi...

Embodiment 3

[0059](1) Add ODA to the reaction device, then add a certain amount of DMAc, so that the solid content is 10%, add an electric stirrer to fully stir and mix evenly, and the speed is controlled at 500-1500 rpm, until ODA is completely dissolved in DMAc Finally, weigh PMDA with an equal molar ratio to ODA, and add it to the reaction device in batches for several times. The feeding process is about 1 hour, until the phenomenon of "climbing the rod" occurs, and the speed is appropriately reduced, and it is controlled at 50-500 revolutions per minute. , continue to keep stirring for 6-12 hours to ensure that ODA and PMDA are fully polymerized, and finally obtain pure PAA glue with high molecular weight;

[0060] (2) Add ODA to the reaction device, then add a certain amount of DMAc, so that the solid content is 10%, add an electric stirrer to fully stir and mix evenly, and the speed is controlled at 500-1500 rpm, until ODA is completely dissolved in DMAc Finally, add fumed alumina p...

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Abstract

The invention discloses a preparing method of a corona resistance polyimide composite film. A roller coating layer and a middle layer are included. The roller coating layer is formed through aminationafter a polyimide / inorganic particle hybrid glue solution is subjected to one-time or multi-layer roller coating on the two faces of the middle layer, and the middle layer is a polyimide pure layer.According to the prepared polyimide composite film, continuous industrial production of multiple layers of corona resistance polyimide composite films is achieved, on the basis that the corona resistance performance is excellent, the mechanical performance is more excellent, and the preparing method is suitable for large-scale industrial continuous production.

Description

technical field [0001] The invention belongs to the technical field of high molecular polymer materials, and in particular relates to a method for preparing a corona-resistant polyimide film, a corona-resistant polyimide film and a preparation system thereof. Background technique [0002] Polyimide is the best performance thin-film insulating material in the world, commonly known as "golden film", which is inseparable from high-speed trains, missiles, fighter jets, thin and miniaturized notebook computers, smart phones, cameras, video cameras and other electronic products it. Relevant survey and research reports show that with the rapid development of high-frequency high-speed communications, intelligent robots, new energy vehicles, rail transit, flexible display and other industries, my country's demand for high-performance polyimide films will continue to grow in the next few years , It is expected that the demand will reach more than 7,500 tons by 2020. But the current d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/28B29C41/46B29C41/36C08J5/18C08G73/10C08L79/08C08K7/24B05C5/00B05C11/02B05C11/04B05C13/02B05D3/02B29L7/00
CPCB05C5/00B05C11/025B05C11/04B05C13/02B05D3/0272B29C41/28B29C41/36B29C41/46B29L2007/00C08G73/1071C08J5/18C08J2379/08C08K7/24C08K2201/003
Inventor 张明玉刘立柱张春琪施泉荣朱小勇夏智峰吴斌马俊峰
Owner SUZHOU INST OF INDAL TECH
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