Preparation method of nanometer alumina doped polyimide film

A technology of polyimide film and nano-alumina, which is applied in the field of preparation of nano-alumina-doped polyimide film, can solve problems such as insufficient product refinement, unstable comprehensive performance, and poor product quality, and achieve Crystal phase stability, good dimensional stability, and good formability

Inactive Publication Date: 2017-12-22
刘庆祝
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of nano-alumina-doped polyimide film to solve the problems of poor product quality, unstable comprehensive performance, and refined products in the domestic polyimide film proposed in the above background technology. Insufficient level and few varieties

Method used

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Embodiment Construction

[0019] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] The invention provides a technical solution: a method for preparing a nano-alumina-doped polyimide film, comprising the following steps:

[0021] 1) Select an appropriate amount of pyromellitic dianhydride (PMDA), 4,4'-diaminodiphenyl ether (ODA);

[0022] 2) Mix the materials selected in step 1), weigh a certain amount of pre-prepared aluminum nano-oxide dispersion, add the solvent required for a certain solid content to dilute, and add it to the ODA container after high-speed stirring In a three-neck flask, stir until comp...

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Abstract

The invention discloses a preparation method of a nanometer alumina doped polyimide film. The method specifically comprises: 1) selecting a proper amount of pyromellitic dianhydride (PMDA) and 4,4'-diamine diphenyl ether (ODA); and 2) mixing the selected materials, weighing a certain amount of the pre-prepared nanometer oxide dispersion of aluminum, adding a required solvent according to a certain solid content, diluting, carrying out high-speed stirring, adding to a three-necked flask filled with ODA, and stirring until completely dissolving. According to the present invention, the nanometer alumina particle solution is added during the solution mixing, such that the polyimide film can be reinforced and toughened, and the wear resistance of the polyimide film can be significantly improved.

Description

technical field [0001] The invention relates to the technical field of thin film preparation, in particular to a method for preparing a nano-alumina-doped polyimide thin film. Background technique [0002] Polyimide film is one of the earliest products of polyimide, which is used for slot insulation of motors and wrapping materials for cables. The main products are DuPont Kapton, Ube Industries' Upilex series and Zhongyuan Apical. Transparent polyimide films serve as flexible solar cell substrates. [0003] The sail of IKAROS is made of polyimide film and fiber. In the thermal power generation department, polyimide fiber can be used for hot gas filtration, and polyimide yarn can separate dust and special pollutants from exhaust gas. Chemical material. [0004] At present, domestic polyimide films have shortcomings such as poor product quality, unstable comprehensive performance, insufficient product refinement, and few varieties, which affect its application. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08J5/18C08K3/22C08L79/08
CPCC08G73/1007C08G73/105C08G73/1071C08J5/18C08J2379/08C08K3/22C08K2003/2227C08L2203/16C08L79/08
Inventor 商建华孙大山李树青刘冰海
Owner 刘庆祝
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