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《Journal of Functional Polymers》 2008-04
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Synthesis and Properties of Organo-Soluble Asymmetric Fluorinated Poly(Amide-Imide)s

LIU Jin-gang,ZHAO Xiao-juan,YANG Hai-xia,YANG Shi-yong(Laboratory of Advanced Polymer Materials,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080,China)  
A new diacid compound,2,3,3′,4′-biphenyltetracarboxylic-N,N′-bis(3-carboxyl-2,5,6-trifluorophenyl) diimide(a-BPFDI) was synthesized from 2,3,3′,4′-biphenyltetracarboxylic dianhydride(a-BPDA) and 3-amino-2,4,5-trifluorobenzoic acid.A series of poly(amide-imide)s(PAIs) were prepared from the diacid and various aromatic diamines via Yamazaki-Higashi reaction in N-methyl-2pyrrolidone,with triphenyl phosphite and pyridine as condensing agents,and calcium chloride as catalyst.PAIs exhibit good solubility in polar aprotic solvents.PAI films show good thermal stability.Their glass transition temperatures are all over 250 ℃ and initial thermal decomposition temperatures over 410 ℃ in nitrogen respectively. In addition,the PAI films exhibit good mechanical and dielectric properties.The 10 μm-thick PAI films show good optical transparency in the visible light region with the transmittance around 80% at 450 nm.
【Fund】: 北京市科委资助项目(Z08080302110801)
【CateGory Index】: O633.5
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Chinese Journal Full-text Database 1 Hits
1 LIU Jin-gang~1,ZHANG Xiu-min~2,KONG Xiang-fei~3,YANG Shi-yong~1(1.Laboratory of Advanced Polymer Materials,Institute of Chemistry, Chinese Academy of Sciences,Beijing 100080,China; 2.School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China; 3.School of Science,Beijing Jiaotong University,Beijing 100044,China);Preparation and characterization of colorless high temperature resistant polyimide films[J];Journal of Functional Materials;2006-09
Chinese Journal Full-text Database 2 Hits
1 Lu Yunhua1 Wang Yongfei1 Xiao Guoyong1 Chi Haijun1 Hu Zhizhi1 Li Lun2(1.School of Chemical Engineering,University of Science and Technology Liaoning,Anshan 114044;2.Chemical Engineering Department,Anshan Coking and Refractory Engineering lonsulting Corporation,Anshan 114001);Progress of colorless,transparent and thermal resistant polyimide films[J];New Chemical Materials;2009-08
2 ZHANG Li-juan1,YU Xin-hai1,2,XU Yong-fen1,FU Ju-sun1(1.Department of Applied Chemistry,Donghua University,Shanghai 201620,China;2.Shanghai Xusen Nonhalogen Smoke Suppression Fire Retardant Co.Ltd,Shanghai 201611,China);Preparation and Performance Study of 1,3-bis(4-amino-2-trifluoromethyl-phenoxy)Benzene and Its Transparent Polyimide Film[J];Insulating Materials;2010-01
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