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Preparation method of polyimide evaporation film

A polyimide and vapor-deposited film technology, which is applied in the field of polyimide vapor-deposited film preparation, can solve the problems of poor quality of polyimide film products, insufficient product refinement, poor electrical insulation of vapor-deposited films, etc. problems, achieving the effects of excellent single-layer insulation, weight and size reduction, and high transparency

Inactive Publication Date: 2021-06-01
慧迈材料科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, equipment such as liquid crystal displays, organic EL displays, or solar cells have higher and higher requirements for the insulation and transparency of films, while domestic polyimide films have problems such as poor product quality, unstable comprehensive performance, and insufficient product refinement. The disadvantages such as few varieties affect its application. The evaporated film produced has the characteristics of poor electrical insulation, not heat-resistant and flame-retardant, not transparent enough, and not thin enough.

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with specific embodiment:

[0018] Prepare the high-purity pyrophthalic anhydride powder with an average particle diameter of 8um and a purity of 99.95% as the first sublimation vapor deposition material, and prepare an average particle diameter of 7um with a purity of 99.8% as the first high-purity pyrophthalic anhydride powder. A sublimation vapor deposition material, using the above two vapor deposition materials, on a quartz plate with a thickness of 1mm, using the resistive heating method to vapor-deposit co-evaporation at the same time, control the content of diamine and bisanhydride in the film to 1:1.01 film, and form a polyimide precursor film sheet, anneal the precursor film at 350 ° C for 5 minutes, imidize to form polyimide, and the finished polyimide film can reach:

[0019] Transmittance Resistivity True Eye Density 85％ 500MΩ 100m 2 / indivual

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Abstract

The invention discloses a preparation method of a polyimide evaporation film. According to the film manufacturing method, a sublimable evaporation material comprising a diamine and a sublimable evaporation material comprising a dianhydride are used, a co-evaporation method in which evaporation is performed simultaneously by a vacuum film formation method is used, the film formed by polyamic acid generated by reaction of the diamine and the dianhydride is formed on a base material, and polyphthalimide is generated by imidization after annealing, so that the obtained film is excellent in transparency and insulating property.

Description

technical field [0001] The invention relates to the field of film preparation, in particular to a method for preparing a polyimide vapor-deposited film. Background technique [0002] At present, equipment such as liquid crystal displays, organic EL displays, or solar cells have higher and higher requirements for the insulation and transparency of films, while domestic polyimide films have problems such as poor product quality, unstable comprehensive performance, and insufficient product refinement. Few varieties and other shortcomings have affected its application. The evaporated film produced has the characteristics of poor electrical insulation, non-heat-resistant and flame-retardant, not transparent enough, and not thin enough. Contents of the invention [0003] In view of the above prior art, the technology to be realized in the present invention is to prepare a polyimide evaporated film with good electrical insulation, heat resistance and flame retardancy, transparent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/26C23C14/12C23C14/54C23C14/58C08J5/18C08L79/08C08G73/10
CPCC23C14/26C23C14/12C23C14/54C23C14/5806C08J5/18C08G73/1067C08G73/1007C08J2379/08
Inventor 闵永刚刘屹东张继升
Owner 慧迈材料科技(广东)有限公司
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