公开(公告)号：US11685811B2

公开(公告)日：2023-06-27

申请号：US17246248

申请日：2021-04-30

申请人： Institute of Petroleum Chemistry, Heilongjiang Academy of Sciences

发明人： Changwei Liu ,  Wanbao Xiao ,  Chunyan Qu ,  Dezhi Wang ,  Kai Xu ,  Bo Wang ,  Hongfeng Li ,  Hao Feng ,  Yueyu Guan ,  Haidong Yang ,  Haimin Wang ,  Yang Zhang ,  Cheng Du ,  Dongpeng Zhou

IPC分类号： C08G73/10 ,  C08G73/12 ,  C08J5/18 ,  C08K3/36 ,  C08K3/38 ,  C08K7/18 ,  C08K9/06 ,  C09J11/04 ,  C09J11/06 ,  C09J179/08 ,  C08K5/544 ,  B29K79/00 ,  B29B13/00 ,  B29C41/26 ,  B29C41/44 ,  B29K509/08

CPC分类号： C08G73/1014 ,  B29B13/00 ,  B29C41/26 ,  B29C41/44 ,  C08G73/1085 ,  C08G73/128 ,  C08J5/18 ,  C08K3/36 ,  C08K3/38 ,  C08K5/544 ,  C08K7/18 ,  C08K9/06 ,  C09J11/04 ,  C09J11/06 ,  C09J179/085 ,  B29B2013/005 ,  B29K2079/08 ,  B29K2509/08 ,  C08J2379/08 ,  C08K2003/385 ,  C08K2201/003 ,  C08K5/544 ,  C08L79/08

摘要： 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.

公开(公告)号：US11028226B2

公开(公告)日：2021-06-08

申请号：US16307897

申请日：2017-11-02

申请人： Institute of Petroleum Chemistry, Heilongjiang Academy of Sciences

发明人： Changwei Liu ,  Wanbao Xiao ,  Chunyan Qu ,  Dezhi Wang ,  Kai Xu ,  Bo Wang ,  Hongfeng Li ,  Hao Feng ,  Yueyu Guan ,  Haidong Yang ,  Haimin Wang ,  Yang Zhang ,  Cheng Du ,  Dongpeng Zhou

IPC分类号： C08G73/12 ,  B29B13/00 ,  B29C41/26 ,  B29C41/44 ,  C08G73/10 ,  C08J5/18 ,  C08K3/36 ,  C08K3/38 ,  C08K7/18 ,  C08K9/06 ,  C09J11/04 ,  C09J11/06 ,  C09J179/08 ,  B29K79/00 ,  B29K509/08

摘要： 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.