三元共聚无氟芳香族透明聚酰亚胺合成及性能  

Synthesis and Properties of Ternary Copolymerized Fluorine-Free Aromatic Transparent Polyimide

作　　者：张倍铭 戴培邦 田磊 Zhang Beiming;Dai Peibang;Tian Lei(School of Materials,Guilin University of Electronic Technology,Guilin,Guangxi,541004;Guangxi Key Laboratory of Structure-Activity Relationship for Electronic Information Materials,Guilin,Guangxi,541004)

机构地区：[1]桂林电子科技大学材料学院,广西桂林541004 [2]广西电子信息材料构效关系重点实验室,广西桂林541004

出　　处：《现代塑料加工应用》2023年第4期12-15,共4页Modern Plastics Processing and Applications

摘　　要：以N,N-二甲基乙酰胺为溶剂,用芳香族二胺4,4′-二氨基二苯醚(ODA)与不同比例的2个芳香族二酐4,4′-联苯四甲酸二酐(BPDA)、双酚A型二醚二酐(BPADA)制备三元共聚无氟芳香族透明聚酰亚胺(PI)薄膜。用傅里叶变换红外光谱仪(FTIR)表征PI结构,用差示扫描量热仪(DSC)、热重分析仪(TG)、阻抗分析仪、紫外-可见分光光度仪(UV-VIS)研究PI薄膜的热性能、介电性能和透光率。结果表明:三元共聚PI薄膜玻璃化转变温度高于210.0℃;热失重5%的温度高于480.0℃;在可见光范围内透明性良好,PI薄膜在465 nm处透光率均超过80.0%,最高可达85.5%;相对介电常数为1.7281~2.9872,介电损耗为0.0029~0.0143。Using N,N-dimethylacetamide as solvent,aromatic diamine 4,4′-diaminodiphenyl ether(ODA),two aromatic dianhydride 4,4′-biphenyl tetracarboxylic dianhydride(BPDA)and bisphenol A diether dianhydride(BPADA)in different proportions were used to prepare ternary copolymerized aromatic transparent polyimide(PI)films.The structure of PI was characterized by Fourier transform infrared spectroscopy(FTIR).The thermal properties,dielectric properties and light transmission properties of PI films were studied by differential scanning calorimetry(DSC),thermogravimetry(TG),impedance analyzer and UV spectrophotometer(UV-VIS).The results show that the glass transition temperature of ternary copolymerized PI film is higher than 210.0℃.The temperature at 5%thermal weight loss is higher than 480.0℃.It has good transparency in the visible range,with the transmittance at 465 nm exceeding 80.0%and a maximum of 85.5%.The relative dielectric constant is from 1.7281 to 2.9872,and the dielectric loss is from 0.0029 to 0.0143.

关 键 词：聚酰亚胺 芳香族 透明性 无氟 三元共聚 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]