系统地总结了聚偏氟乙烯膜结构和性能的影响因素.不同的添加剂对膜结构的影响也不同.一般而论,低沸点添加剂的加入使膜的支撑层具有海绵状孔结构;而无机盐、水溶性高聚物的加入,会使溶剂与沉淀剂的交换速率加快,使膜的支撑层具有指状孔结构.沉淀剂的凝固强度越高、溶剂与沉淀剂的亲和力越强,越易形成指状孔结构的膜.通过对聚偏氟乙烯膜的改性,可以提高膜的实用性能.
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