塑料科技2026，Vol.54Issue(5)：128-132,5.DOI:10.15925/j.cnki.issn1005-3360.2026.05.023
铸膜液熟化时间对PVDF高度疏水微孔膜结构和性能的影响
Effect of Casting Solution Maturation Time on Structure and Property of PVDF Highly Hydrophobic Microporous Membrane
李金瑞 1王文超2
作者信息
- 1. 廊坊市产品质量监督检验所,河北 廊坊 065000
- 2. PPG涂料(天津)有限公司,天津 300457
- 折叠
摘要
Abstract
The article employs the micro-molding in conjunction with non-solvent induced phase separation(NIPS)method to fabricate highly hydrophobic polyvinylidene fluoride(PVDF)microporous membranes.The casting substrate is an aluminum plate,N-methyl-2-pyrrolidone(NMP)serves as the solvent,and water acts as the coagulant.The study investigates the effects of the maturation time of the casting solution on phase separation behavior and the structure and properties of the membrane under the synergistic action of micro-molding.The results indicated that the method not only replicated the micrometer-scale roughness of the template but also slowed down the phase transformation rate through adhesion constraints,which was conducive to solid-liquid phase separation and the coarsening of nuclei,ultimately forming a micro-nano composite hierarchical structure.Meanwhile,the extended maturation time promoted the formation of primary crystals,transforming the instantaneous liquid-liquid phase separation into solid-liquid phase separation.As a result,the hydrophobicity of the membrane was significantly enhanced,with the water contact angle reaching up to 144.46°,indicating that this composite membrane structure can trap more air.Moreover,the other properties of the membrane also surpassed those of the membrane prepared solely by the NIPS method.关键词
聚偏氟乙烯/高度疏水/铸膜液/熟化时间/非溶剂致相分离法Key words
PVDF/Highly hydrophobic/Casting solution/Maturation time/NIPS分类
化学化工引用本文复制引用
李金瑞,王文超..铸膜液熟化时间对PVDF高度疏水微孔膜结构和性能的影响[J].塑料科技,2026,54(5):128-132,5.
