Fluorinated Colorless Polyimides with High Heat-resistance and Low Birefringence  

作　　者：Bing-Yu Zou Lu-Hao Qiu Huan-Yu Lei Jin-Ming Liu Wei-Feng Peng Hong-Qin Zhao Feng Bao Ming-Jun Huang 

机构地区：[1]South China Advanced Institute for Soft Matter Science and Technology,School of Emergent Soft Matter,South China University of Technology,Guangzhou,510640,China [2]Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices,South China University of Technology,Guangzhou,510640,China

出　　处：《Chinese Journal of Polymer Science》2023年第10期1599-1608,共10页高分子科学（英文版）

基　　金：supported by the Natural Science Foundation of Guangdong Province(No.2022A1515010125);the Key-Area Research and Development Program of Guangdong Province(No.2020B010182002);the Guangdong Basic and Applied Basic Research Foundation(No.2022A1515110543);the R&D Program of Guangzhou(No.2023A04J1577);the Major Program of National Natural Science Foundation of China(No.51890871);the Recruitment Program of Guangdong(No.2016ZT06C322);the 111 Project(No.B18023);Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application at Soochow University.

摘　　要：The development of optical films with high transparency,high thermal resistance and low birefringence remains a challenge in the flexible display industry.In this work,we designed and synthesized a series of fluorinated colorless polyimides(CPIs)materials using 2,5-substituted m-phenylenediamine diamine monomers and 1,2,4,5-cyclohexanetetracarboxylic dianhydride(CHDA).We systematically studied the effects of fluorinated group substitutions on the thermal,mechanical,optical and dielectric properties of CPI films.The introduction of alicyclic CHDA dianhydride affords high transparency and low yellowness,while the 2,5-substituted m-phenylenediamine diamines offer the CPIs with quite low birefringence as well as high glass transition temperatures.A particular CHDA/o3FBDA film with simple chemical structure stands out,exhibiting well-balanced overall properties.

关 键 词：Colorless polyimide Low birefringence FLUORINATED Optical flm 

分 类 号：TQ317[化学工程—高聚物工业] TB383.2[一般工业技术—材料科学与工程]