聚四氟乙烯防水透湿膜的微孔形貌与性能  

Micropore morphology and performance of PTFE waterproof and moisture permeable membrane

作　　者：缪宏超[1] 张婉清 姚江薇[1] MIAO Hongchao;ZHANG Wanqing;YAO Jiangwei(Shaoxing University,College of Textile Engineering and Apparel Design,Shaoxing 312000,Zhejiang,China)

机构地区：[1]绍兴文理学院纺织服装学院,浙江绍兴312000

出　　处：《上海纺织科技》2021年第9期9-12,共4页Shanghai Textile Science & Technology

基　　金：浙江省教育厅一般科研项目(Y201941080)。

摘　　要：利用双向拉伸法对聚四氟乙烯膜进行拉伸处理,研究不同拉伸温度、拉伸速率下薄膜的力学性能以及防水透湿性能与膜微孔结构之间的关系。结果显示:拉伸温度越高,微孔孔径越大,孔径分布均匀度越好,孔隙率越大,力学性能越强,透气、透湿性越好,最佳拉伸温度为200℃~280℃;拉伸速率增大,薄膜力学性能、透气、透湿性先增后减,拉伸速率最佳值为800%/s。The tensile treatment of PTFE membrane is carried out by biaxial tensile method.The mechanical properties of the membrane under different tensile temperature and tensile rate,and the relationship between the waterproof and moisture permeability of the membrane and the microporous structure of the membrane are studied.The results show that the higher the tensile temperature,the higher the micropore diameter,the better the uniformity of pore size distribution,the greater the porosity,the stronger the mechanical properties,the better the air and moisture permeability,and the best tensile temperature is 200℃~280℃.The higher the tensile rate is,the mechanical properties,air permeability and moisture permeability of the films increase first and then decrease,and the optimum tensile rate is 800%/s.

关 键 词：聚四氟乙烯 微孔膜 防水性 透湿性 双向拉伸 

分 类 号：TS106.6[轻工技术与工程—纺织工程]