【作者】 刘俊玲； 王晓川； 孙杰； 周建华；

【Author】 Liu Junling, Wang Xiaochuan, Sunjie, Zhou Jianhua ( Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, P. R. China Department Applied Chemistry, Southwest University of Technology, Mianyang 621010, P. R. China)

【机构】 中国工程物理研究院化工材料研究所；

【摘要】 本文用DSC研究了退火处理对共聚比为1:1,1:3,1:4．1:9的VDF／CTFE无规共聚物的结晶影响．研究发现F2311退火前后, 均为非晶态,退火处理过程中,F2311和2314的片晶运步完善增厚．熔点升高．结晶度逐渐增大;F2319片晶厚度随退火时闯的延长反而减薄,结晶度先降低后升高;退火温度越接近熔融温度,F23共聚物的晶粒生长越完善．更多还原

【Abstract】 The annealing effects on the crystallization of F23 copolymers, which are synthesized with n (VDF): n (CTFE) = 1:1,1:3,1:4,1:9, were studied by DSC. The experimental data show that, F2311 is amorphous before and after annealing. During the annealing process, the crystals of F2313 and F2311 became perfect, the melting temperature and crystal degree increased as the annealing temperature and annealing time increased. Oppositely, the crystal lamellar thickness of F2319 decreased as the annealing time increased, its crystal degree decreased at the first step and then increased. The results also indicate that the annealing temperature is closer to the original melting temperature, the crystal grains of F23 copolymers develop more perfect.更多还原