【作者】 郇彦； 刘雅言； 杨一飞；

【Author】 HUAN Yan, LIU Ya-yan ,YANG Yi-fei (Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022,Chinaj Postgraduate Institute of Chinese Academy of Sciences, Beijing 100049,China)

【机构】 中国科学院长春应用化学研究所绿色化学与过程实验室；

【摘要】 采用XRD、FTIR、DSC等分析手段,研究了不同的拉伸温度与拉伸比对聚偏氟乙烯-六氟丙烯共聚物挤出薄膜α→β转变的影响。研究结果表明:未拉伸挤出膜的结晶相以α为主同时含有少量β相,拉伸促使α相向β相转变,在较低的温度范围内于较大的拉伸比条件下有利于α→β转变。最合适的拉伸比为 4．5拉伸温度为35℃。更多还原

【Abstract】 Equipped with XRD,FTIR,DSC analytical method we study the influence of draw temperature and draw ratio on the α→βphase transition of poly(vinylidenefluoride-hexaflouropropylene) (PVDF-HFP) copoly mer. The result shows that the phase of the extrude PVDF-HFP copolymer film is mainly on αphase blending with a little β phase , a low temperature and high draw ratio contribute to higher α→βphase transition the best draw temperature is 35 ℃ and the draw ratio is 4. 5.更多还原