聚氟乙烯流延薄膜成型工艺研究  

Research on Processing Conditions of PVF Films by Solution Casting

作　　者：徐海云[1] 田华峰[1] 严加安[1] 李传明[1] 刘茜[1] 付黎伟 项爱民[1] 

机构地区：[1]北京工商大学材料与机械工程学院,北京100048

出　　处：《中国塑料》2014年第1期70-73,共4页China Plastics

基　　金：北京市自然科学基金(2122014);北京市教委科研计划面上项目(KM201310011001);教师队伍建设-青年英才计划(YETP1453)

摘　　要：将聚氟乙烯(PVF)经增塑剂及N,N-二甲基甲酰胺(DMF)溶剂改性后,用溶液流延法制备了PVF薄膜,并研究了制备工艺对膜的结构、性能及表面形态的影响。结果表明,PVF经DMF溶剂溶解后,其结晶被破坏,同时薄膜的拉伸强度下降,断裂伸长率增加;选用浓度为3%(质量分数,下同)的PVF成膜液,以邻苯二甲酸二辛酯(DOP)为增塑剂,在100r/min的搅拌速度和85℃的温度下充分溶解,经消泡剂处理后立即流延成膜可得到力学性能和表面形态较好的PVF薄膜。PVF films containing different plasticizers and cosolvent were prepared by solution casting. The effects of processing parameters on the structure and properties of the films were investigated. The results showed PVF could be dissolved in DMF. The crystal structures of PVF films were destroyed, resulting in improved elongation at break and decreased tensile stress. DOP was a good plasticizer for PVF. The PVF films with good mechanical properties could be obtained with the concentration of PVF solution 3 % at 85 ℃ and 100 r/min stirring speed in the presence of deforming agent.

关 键 词：聚氟乙烯 溶液流延 薄膜 成型工艺 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]