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Treatment method of polyimide film

A technology of polyimide film and processing method, which is applied in the field of polyimide film processing, can solve problems such as being difficult to meet the requirements of new users, and achieves improved comprehensive physical and mechanical properties, improved adhesion, and expanded use functions. Effect

Inactive Publication Date: 2014-01-29
LAIWU ZHONGTIAN INSULATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of modern industry and technology, certain properties of the film are dimensional stability and high adhesion in a wide temperature range during the processing and use of downstream products, especially in the processing and use of precision high-end components. , it is difficult to meet the requirements of new users

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0009] React pyromellitic dianhydride and diaminodiphenyl ether in a strong polar solvent, dimethylacetamide, to obtain a primary film of polyimide film through casting and biaxial stretching, and the polyimide film Put the primary film in a constant temperature and humidity room at 23°C and 45% RH, pass a high voltage of 12KV and a power of 7KVA to the primary film of the polyimide film, and perform electrostatic treatment for 10 minutes, and then put the primary film of the polyimide film in the In the high-temperature treatment box, raise the temperature of the high-temperature treatment box from normal temperature to 100 °C at a rate of 2 °C / min and keep it for 30 minutes, then adjust the heating rate of the high-temperature treatment box to 180 °C at a rate of 3 °C / min, keep it for 20 minutes, and finally adjust the high-temperature treatment The heating rate of the box is 5°C / min to 300°C for 10 minutes. Then the film was cooled to room temperature under natural conditio...

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Abstract

The invention relates to a treatment method of a polyimide film. According to the method, high-pressure treatment is carried out on the polyimide film prepared by the traditional method at constant temperature and constant humidity, and then the polyimide film is put into a high-temperature cabinet to carry out high-temperature thermal treatment at different temperatures for a plurality of times. By adopting the treatment method, a high-performance polyimide film can be obtained. Therefore, the film has good caking property, and excellent temperature dimension stability.

Description

technical field [0001] The invention belongs to the field of electronic materials, and in particular relates to the field of a processing method for a polyimide film. Background technique [0002] Polyimide film, known as gold film, is the best performance film insulating material in the world. It has excellent high and low temperature resistance, radiation resistance, electrical insulation, medium resistance, high strength and high chemical resistance. Receptivity, etc. Due to its superior comprehensive performance, it is especially suitable for use as the base material of flexible printed circuit boards and insulation materials for various high-temperature-resistant motors and electrical appliances. [0003] The traditional method of preparing polyimide film is to react dianhydride and diamine in an aprotic polar solvent, and obtain polyimide film through casting and biaxial stretching. With the development of modern industry and technology, certain properties of the fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08J5/18C08G73/10
Inventor 何美玲孙言云祝春才
Owner LAIWU ZHONGTIAN INSULATING MATERIAL
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