Title:
COLORLESS TRANSPARENT POLYIMIDE THIN FILM AND PREPARATION METHOD THEREFOR, AND LED FILM SCREEN
Document Type and Number:
WIPO Patent Application WO/2022/142305
Kind Code:
A1
Abstract:
A colorless transparent polyimide thin film and a preparation method therefor, and an LED film screen. The colorless transparent polyimide thin film comprises the following raw materials: polyimide resin and a thermally conductive filler, wherein the polyimide resin is mainly obtained by polycondensation of dianhydride and diamine under the action of a dehydrating agent and a catalyst; the thermally conductive filler comprises an unmodified inorganic thermally conductive filler and/or a modified inorganic thermally conductive filler, and the mass of the thermally conductive filler accounts for 5% to 60% of the total mass of the colorless transparent polyimide thin film; the colorless transparent polyimide thin film has transmittance of 60% to 87% and a coefficient of thermal conductivity of 0.4 W/m·K to 4.5 W/m·K.
Inventors:
JIN YADONG (CN)
ZHANG YUANHAO (CN)
ZHU JUYE (CN)
LI ZHIWEN (CN)
ZHANG YUANHAO (CN)
ZHU JUYE (CN)
LI ZHIWEN (CN)
Application Number:
PCT/CN2021/108698
Publication Date:
July 07, 2022
Filing Date:
July 27, 2021
Export Citation:
Assignee:
NINGBO SOLARTRON TECH CO LTD (CN)
International Classes:
C08L79/08; C08J5/18; C08K3/04; C08K3/22; C08K3/28; C08K3/34; C08K3/38; C08K9/06
Foreign References:
| CN112831182A | 2021-05-25 | |||
| CN104672901A | 2015-06-03 | |||
| CN101831175A | 2010-09-15 | |||
| CN105111475A | 2015-12-02 | |||
| CN110951077A | 2020-04-03 | |||
| KR20140118386A | 2014-10-08 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (HANGZHOU) (CN)
Download PDF: