The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2021
Filed:
Nov. 02, 2017
Institute of Petroleum Chemistry, Heilongjiang Academy of Sciences, Harbin, CN;
Changwei Liu, Harbin, CN;
Wanbao Xiao, Harbin, CN;
Chunyan Qu, Harbin, CN;
Dezhi Wang, Harbin, CN;
Kai Xu, Harbin, CN;
Bo Wang, Harbin, CN;
Hongfeng Li, Harbin, CN;
Hao Feng, Harbin, CN;
Yueyu Guan, Harbin, CN;
Haidong Yang, Harbin, CN;
Haimin Wang, Harbin, CN;
Yang Zhang, Harbin, CN;
Cheng Du, Harbin, CN;
Dongpeng Zhou, Harbin, CN;
Other;
Abstract
A high temperature resistant polyimide film and its preparation method. The present invention relates to a polyimide film and its preparation method and solves the problems of honeycomb's and skin panel's core adhesive—polyimide film with insufficient heat resistance, no climbing of bonding core structure and adhesive fillet formation. The high temperature resistant polyimide film is made by polyimide solution, inorganic filler modifier and interface coupling agent by the steps of: under specific temperature and stirring conditions, adding inorganic filler modifier and interface coupling agent to polyimide solution, stirring to obtain the adhesive agent; filtering and degassing the adhesive agent, casting to a stainless steel drum with carrier cloth and release paper to obtain a self-supporting film; then heating and annealing to obtain the final polyimide film. The present invention is applied to high temperature resistant polyimide film and its preparation method.