摘要
针对先进柔性覆铜板(FCCL)领域对热塑性黑色聚酰亚胺薄膜的应用需求,采用含有生色亚胺(-NH-)基团的芳香族二胺单体4,4′-二胺基二苯胺(NDA)分别与一系列二酐单体,包括4,4′-(六氟异亚丙基)双邻苯二甲酸酐(6FDA)、2,2-双[4-(3,4-二羧基苯氧基)苯基]丙烷二酐(BPADA)以及氢化3,3′,4,4′-联苯四甲酸二酐(HBPDA)等聚合制备了3种有机可溶性PI(SPI)树脂,然后采用SPI/DMAc溶液在相对较低温度下(80~250℃)制备了PI薄膜。系统研究上述特征基团的引入对PI薄膜光学性能、热性能以及电学性能的影响机制。结果表明:制备的SPI树脂在极性非质子性溶剂,如N-甲基吡咯烷酮(NMP)、N,N-二甲基乙酰胺(DMAc)中具有良好的溶解性。制备的SPI薄膜具有本征深色特性,其在500 nm波长处的透光率(T_(500))小于5%,明度(L*)低于60。此外,该系列薄膜具有良好的耐热性能,玻璃化转变温度(T_(g))最高可达375.9℃,氮气中5%失重温度(T_(5%))高于500℃。该系列薄膜还具有良好的电绝缘特性,其体积电阻率(ρ_(v))均超过10^(15)Ω·cm。
According to the application requirements of thermoplastic black polyimide film in the field of advanced flexible copper clad laminate(FCCL),three organo-soluble polyimide(SPI)resins were prepared from an aromatic diamine monomer containing chromogenic imine(-NH)group,4,4′-diaminodiphenylamine(NDA)and various dianhydrides,including 4,4′-(hexafluoroisopropylidene)diphthalic anhydride(6FDA),2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride(BPADA),and hydrogenated 3,3′,4,4′-biphenyltetracarboxylic dianhydride(HBPDA)by polymerization.Then PI films were prepared from SPI/DMAc solution at relatively low temperature(80−250℃),and the effects of the above characteristic groups on the optical properties,thermal properties,and electrical properties of PI films were studied systematically.The results show that the SPI resin has good solubility in polar aprotic solvents such as N-methylpyrrolidone(NMP)and N,N-dimethylacetamide(DMAc).The SPI films show intrinsically deep color,the transmittance value at 550 nm of wavelength(T_(500))is lower than 5%,and the lightness(L*)is below 60.The PI films have good thermal stabilities,the glass transition temperatures(T_(g))is up to 375.9℃and the 5%weight loss temperatures(T_(5%))is over 500℃in nitrogen.Besides,the PI films exhibit good electrical insulating properties,the volume resistivities(ρ_(v))is higher than 10^(15)Ω·cm.
作者
谈瑶瑶
安源程
贾延江
吴琳
张燕
职欣心
刘金刚
TAN Yaoyao;AN Yuancheng;JIA Yanjiang;WU Lin;ZHANG Yan;ZHI Xinxin;LIU Jingang(School of Materials Science and Technology,China University of Geosciences,Beijing 100083,China)
出处
《绝缘材料》
CAS
北大核心
2021年第11期75-83,共9页
Insulating Materials
基金
深圳市科技计划项目(JSGG20210629144539012)
山东省重点研发计划重大科技创新工程项目(2019JZZY020235)。
关键词
柔性覆铜板
黑色聚酰亚胺薄膜
光学性能
热性能
绝缘性能
flexible copper clad laminate
black polyimide film
optical properties
thermal properties
insulating properties
