High optical transparency and low dielectric constant of organosoluble polyamide based on 1, 2-Bis-(4-amino-2-trifluoromethylphenoxy) benzene，2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）-中国聚合物网,论文下载

High optical transparency and low dielectric constant of organosoluble polyamide based on 1, 2-Bis-(4-amino-2-trifluoromethylphenoxy) benzene

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关键词：

trifluoromethyl group polyamide solubility dielectric constant

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708K

所属学科：

分子表征

来源：

2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）

简介：

Anovelfluorinatedpolyamidewaspreparedfromanaromaticdiaminecontainingtrifluoromethylgroup(–CF3),1,2-bis(4-amino-2-trifluoromethylphenoxy)benzene,andaromaticdicarboxylicacids(OBA)byusingphosphorylationpolycondensation.Thefluorinatedpolyamidewasobtainedwithinherentviscosities0.78dL/g.Thefluorinatedpolyamideshowsoutstandingsolubilityandcanbeeasilydissolvedinamide-typepolaraproticsolvents(e.g.,N-methyl-2-pyrrolidone(NMP),Dimethylacetamide(DMAc),andDimethylformamide(DMF))andevendissolvedinlesspolarsolvents(e.g.,pyridine,andtetrahydrofuran).FlexibleandtoughpolymerfilmscanbeeasilypreparedbycastingfilmsfromDMAcsolvent.Thefluorinatedpolyamidefilmsexhibitedhighopticaltransparencywithacutoffwavelengthof336nm.Italsoshowedhighglasstransitiontemperaturesat231°C.Furthermoreitexhibitsgoodthermalstability,andthe10%weightlosstemperaturesis464°Cinnitrogenatmosphere.Theobtainedpolyamidefilmspossessedlowdielectricconstantsof2.99at1MHz.

作者：

LI Penghui, WANG Chenyi, Li Guang, JIANG Jianming

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2010-03-24 14:26:43

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