应用化学 ›› 1986, Vol. 0 ›› Issue (6): 64-67.

• 研究简报 • 上一篇    下一篇

偏氟乙烯-四氟乙烯共聚物高取向薄膜的形态结构研究

张伟广, 杨德才   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1985-11-08 修回日期:1986-04-15 出版日期:1986-12-10 发布日期:1986-12-10
  • 通讯作者: 杨德才

ON THE MORPHOLOGY OF HIGHLY ORIENTED FILMS OF COPOLYMERS OF VINYLIDENE FLUORIDE AND TETRAFLUOROETHYLENE

Zhang Weiguang, Yang Decai   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1985-11-08 Revised:1986-04-15 Published:1986-12-10 Online:1986-12-10

摘要: 聚偏氟乙烯(PVF2)至少有四种晶相结构,即α、β、γ和δ相,PVF2的压电性和热电性直接依赖其β相结构。 本工作报导以特殊的熔体拉伸方法制备不同组成偏氯乙烯(VF2)和四氟乙烯(VF4)的共聚物高取向薄膜与对其结构的研究结果。

Abstract: The morphology of melt-drawn films of copolymers of vinylidene fluoride and te-trafluoroethylene with various compositions has been investigated by TEM, IR,WAXD and DSC techniques. The melt-drawn films contain highly oriented lamellae consisted of β crystal form within the composition range investigated (tetrafluoroethylene content of 10-40mol%)The β phase is stable at higher temperatures. No phase transition has been observed during the uniaxial deformation process of the films.