高耐热无色透明聚酰亚胺材料的制备与性能  

Preparation and Properties of Colorless Transparent Polyimide Material with High Thermal Resistance

作　　者：赵明 徐勇[1] 曾炜 朱征 汤学妹 曾立翔 Zhao Ming;Xu Yong;Zeng Wei;Zhu Zheng;Tang Xuemei;Zeng Lixiang(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu,21009;Institute of Chemical Engineering,Guangdong Academy of Sciences,Guangzhou,Guangdong,510665;R&D Centre,Nanjing Zhonghong Running Advanced Material Technology Co.,Ltd.,Nanjing,Jiangsu,210028;Department of R&D,Polyimide(Suzhou)Technology Co.,Ltd.,Suzhou,Jiangsu,215011)

机构地区：[1]南京理工大学化学与化工学院,江苏南京210094 [2]广东省科学院化工研究所,广东广州510665 [3]南京中鸿润宁新材料科技有限公司研发中心,江苏南京210028 [4]聚埃麦德(苏州)科技有限公司研发部,江苏苏州215011

出　　处：《现代塑料加工应用》2022年第1期6-8,12,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金面上项目(52073066);广东省科学院建设国内一流研究机构行动专项资金(2020GDASYL-20200120028)。

摘　　要：采用4,4′-六氟异丙基邻苯二甲酸酐(6FDA),4,4′-二氨基-2,2′-二甲基-1,1′-联苯(o-TOL)和2,2′-双(三氟甲基)-4,4′-二氨基联苯(TFMB),经两步法合成了一系列聚酰胺酸(PAA)溶液,再经流延涂膜、去溶剂和亚胺化后制备了一系列无色透明聚酰亚胺(CPI)薄膜。利用傅里叶变换红外光谱仪、紫外-可见分光光度计、差示扫描量热仪和热重分析仪对CPI薄膜结构和性能进行了研究。结果表明:CPI薄膜具有优异的综合性能。当o-TOL物质的量分数为50%~100%时,CPI薄膜耐热性能优异,玻璃化转变温度均在320.00℃左右,CPI薄膜失重5%时的温度都在490.00℃以上,最大透光率基本都在90%以上。A series of polyamic acid(PAA)solutions were synthesized by two-step method using 4,4′-hexafluoroisopropyl phthalic anhydride(6 FDA),4,4′-diamino-2,2′-dimethyl-1,1′-biphenyl(o-TOL)and 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl(TFMB).After casting film coating,solvent removal and imidization,a series of colorless transparent polyimide(CPI)films were prepared.The structure and properties of CPI films were studied by Fourier transform infrared spectrometer,UV-visible spectrophotometer,differential scanning calorimeter and thermogravimetric analyzer.The results show that CPI films have excellent comprehensive performance.When mole fraction of o-TOL is between 50%and 100%,the thermal resistances of CPI films are excellent,and the glass transition temperatures are all about 320.00℃,and the temperature of 5%weight loss of CPI films is all above 490.00℃,and the maximum transmittances are basically above 90%.

关 键 词：无色透明聚酰亚胺薄膜 光学性能 耐热性能 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]