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A kind of preparation method of polyimide/metal organic framework composite thin film

A metal-organic framework and composite film technology, which is applied in the field of polyimide composite film preparation, can solve the problems of short corona aging resistance life, polyimide AC breakdown field strength, etc., and achieve high AC breakdown Effects of field strength, excellent electric strength, and high corona aging resistance life

Active Publication Date: 2020-11-03
大同共聚西安科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of weak AC breakdown field and short corona aging life of existing polyimide, and provide a preparation method of polyimide / metal organic framework composite film

Method used

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  • A kind of preparation method of polyimide/metal organic framework composite thin film
  • A kind of preparation method of polyimide/metal organic framework composite thin film

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specific Embodiment approach 2

[0082] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the Zn(CH 3 COO) 2 2H 2 The mass ratio of O to the volume of deionized water is (250mg ~ 300mg): 5mL. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0083] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is: the volume ratio (6.4-6.8) of the 2-methylimidazole solution to the zinc acetate solution described in step 1.2. Other steps are the same as those in Embodiment 1 or 2.

specific Embodiment approach 4

[0084] Embodiment 4: The difference between this embodiment and Embodiments 1 to 3 is that the concentration of the 2-methylimidazole solution in Step 1 ② is 2.5 mol / L-2.72 mol / L. Other steps are the same as those in Embodiments 1 to 3.

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Abstract

The invention relates to a polyimide / metal organic skeleton composite film preparation method, which relates to a polyimide composite film preparation method. The method solves the problems of weak ACbreakdown field intensity and short corona aged life of polyimide in the prior art. The method comprises the following steps: 1) preparing a metal organic skeleton ZIF-8 / dimethyl acetamide solution;and 2) mixing a pyromellitic dianhydride solution and metal organic skeleton ZIF-8 colloid and stirring the materials to obtain PAA / ZIF-8 colloid; removing bubbles, performing gradient heating for solidification to obtain a polyimide / metal organic skeleton composite film. The AC breakdown field intensity of the polyimide / metal organic skeleton composite film is 130 Kv / mm-163 Kv / mm; and the coronaaged life resistance is 6.6 h-13.6 h. The polyimide / metal organic skeleton composite film can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a polyimide composite film. Background technique [0002] As a high heat-resistant insulating material, polyimide also has high chemical stability, high mechanical properties, high radiation resistance, high processability and excellent electrical properties, which make it widely used in electronic packaging, aerospace, Electrical insulation and other fields have a wide range of application space. With the development of science and technology, higher requirements are put forward for the performance of materials. The AC breakdown field strength of traditional polyimide is about 118kV / mm, and the corona aging resistance life is about 3h. Therefore, the electric strength of traditional polyimide cannot meet the needs of current industrial production. Contents of the invention [0003] The purpose of the present invention is to solve the problems of weak AC breakdown field strength and short corona agin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/08C08L87/00C08J5/18C08G83/00C08G73/10
CPCC08G73/1007C08G73/1071C08G83/008C08J5/18C08J2379/08C08J2487/00
Inventor 刘晓旭李彦鹏晁栋梁张晓兰岳东朱波闫凯
Owner 大同共聚西安科技有限公司
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