航天器环境工程2016，Vol.33Issue(3)：321-326,6.DOI:10.3969/j.issn.1673-1379.2016.03.016
单向拉伸对PVDF薄膜结构和介电性能的影响
The effect of uniaxial stretching on the structure and the dielectric property of polyvinylidene fluoride film
摘要
Abstract
In order to improve the dielectric performance of poly(vinylidene fluoride) (PVDF) film, the influence of uniaxial stretching on the crystal structure and the dielectric property of PVDF is investigated. The effects of stretching ratios and temperature on the relative degree of crystallinity and dielectric properties of PVDF films are investigated. The degree of crystallinity in PVDF film increases greatly and reaches up to 80% after uniaxial tensile. Meanwhile, the stretched spherulites and micro-strips paralleling with the stretching direction are observed in the matrix by AFM. When the stretching temperature is 80℃ and the stretching ratio is 4, the dielectric constant of the stretched film increases by 40% and reaches up to 11.4 at 100 Hz, with the dielectric loss being as low as 0.02.关键词
PVDF薄膜/单向拉伸/结晶度/介电常数/介电损耗Key words
PVDF film/uniaxial stretching/degree of crystallinity/dielectric constant/dielectric loss分类
数理科学引用本文复制引用
杨丽,姜利祥,叶会见,朱云飞,邵文柱..单向拉伸对PVDF薄膜结构和介电性能的影响[J].航天器环境工程,2016,33(3):321-326,6.基金项目
可靠性与环境工程技术重点实验室开放基金项目 （）
