Corona-resistant polyimide film

A polyimide film, corona-resistant technology, applied in the field of film manufacturing, can solve the problems of affecting application, less variety, and insufficient product refinement, and achieve the effects of good dispersion and simple production method.

Inactive Publication Date: 2019-08-23
慧迈材料科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic polyimide films have shortcomings such as poor product quality, unstable com

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

[0015] Example 1: Weigh 25g of diaminodiphenyl ether and 100g of nano-alumina particles, dissolve them in 200g of dimethylacetamide solution, slowly add them into 31.6g of pyromellitic dianhydride while stirring, and stir until the solution viscosity The phenomenon of climbing rods occurs when it becomes larger. Take out the above liquid and use an automatic film coating machine to evenly coat it on the tempered glass plate with a film thickness of 20 microns, then put the tempered glass plate covered with polyamic acid solution into a high-temperature oven, and control the heating and heat preservation speed. To carry out imidization, the temperature control can start with 80°C for 1 hour, followed by 100°C, 150°C, 200°C, 250°C, and 300°C for 30 minutes each. Finally, wait for the temperature of the oven to drop and take out the plate, and peel off the polyimide film above to obtain a polyimide film with corona resistance.

[0016] serial number 1 2 3 Tensil...

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PUM

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Abstract

The invention discloses a manufacturing method of a corona-resistant polyimide film. The specific manufacturing method comprises the following steps: mixing a needed filler, a solvent, a diamine and adianhydride, and carrying out a reaction to obtain a polyamic acid with the needed filler by an in-situ polymerization method; uniformly smearing the polyamic acid to a flat board material by a film-coating machine, and placing the coated flat board material into a high-temperature oven for imidization to form needed polyimide; and finally taking out the product, and peeling off the polyimide film on the board material to obtain the needed material. The polyimide film prepared by the method has the characteristics of good corona resistance, and can be applied to various fields such as electricity and high-speed rails.

Description

technical field [0001] The invention relates to a method for manufacturing a film, in particular to a method for manufacturing a corona-resistant polyimide film. Background technique [0002] Polyimide (PI) refers to a class of polymer materials containing imide rings in the main chain. It is a special polymer material that has been industrialized at present. It has superior physical and mechanical properties, excellent electrical and chemical stability. , Widely used in high-tech fields. The polyimide film is one of the earliest commodities and the largest one at the same time. This new type of high-temperature resistant organic polymer film is currently one of the best-performing film insulating materials and one of the most expensive film materials in the world, known as the "golden film". The excellent performance of polyimide film makes it play an increasingly important role in many fields. Together with carbon fiber and aramid fiber, polyimide film is considered to ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L79/08C08G73/10
CPCC08G73/1007C08G73/1071C08J5/18C08J2379/08C08K2003/2227C08K2201/011
Inventor 闵永刚饶秋实刘屹东
Owner 慧迈材料科技(广东)有限公司
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