全氟-2,2-二甲基-1,3-二氧环戊烯-四氟乙烯共聚物组成与性能  

Composition and properties of perfluoro-2,2-dimethyl-1,3-dioxole/tetrafluoroethylene copolymers

作　　者：毛国亮 余大洋 蔡怀勋 陈振华 王树华 潘鹏举[1,2] 包永忠 MAO Guoliang;YU Dayang;CAI Huaixun;CHEN Zhenhua;WANG Shuhua;BAO Yongzhong(College of Chemical and Biological Engineering,Zhejiang University,State Key Laboratory of Chemical Engineering,Hangzhou,310027;Institute of Zhejiang University-Quzhou,Quzhou,Zhejiang 324000;Zhejiang Juhua Technology Center Limited Corporation,Quzhou,Zhejiang 324000)

机构地区：[1]浙江大学化学工程与生物工程学院,化学工程联合国家重点实验室,杭州310027 [2]浙江大学衢州研究院,浙江衢州324000 [3]浙江巨化技术中心有限公司,浙江衢州324004

出　　处：《化工生产与技术》2021年第2期13-16,I0003,共5页Chemical Production and Technology

基　　金：国家重点研发计划项目资助(2017YFB0307704)。

摘　　要：研究了全氟-2,2-二甲基-1,3-二氧环戊烯-四氟乙烯(PDD-TFE)共聚物中PDD含量对PDD-TFE共聚物热稳定、光学和介电特性的影响。结果表明,共聚物5%的质量损失和最大质量损失速率所对应的温度分别在420℃和480℃以上,并基本随共聚物中PDD含量的增加而降低。PDD含量越高,PDD-TFE共聚物的可透过光波长范围更宽,光谱透射比和带隙宽度越大。PDD-TFE共聚物相对介电常数小(1.90~2.05),且在一定范围内随共聚物中PDD含量的增加而减小。Perfluoro-2,2-dimethyl-1,3-dioxole/tetrafluoroethylene(PDD-TFE)copolymer is a fluoroplastics with high performances,and study on the structure-property relationships of PDD-TFE copolymers would provide instruction to their applications.Effects of PDD composition on the condensed structure,thermal stability,optical and dielectric properties of PDD-TFE copolymer were studied.The corresponding temperature of 5%weight loss and maximum thermal weight loss rate of copolymers were above 420℃and 480℃,respectively,and decreased with the increasing of PDD content in copolymers.PDD-TFE copolymers with the higher PDD content exhibited the wider transmissible wavelength,the greater transparency and the wider the band gap width.PDDTFE copolymers exhibited low dielectric constant(1.90~2.05),and the dielectric constant of the copolymer was decreased with the increase of PDD content when PDD content was higher than 35%.

关 键 词：全氟-2 2-二甲基-1 3-二氧环戊烯 四氟乙烯 共聚物组成 透明 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业]