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1.发明申请公开(公告)号：US20180272289A1
公开(公告)日：2018-09-27
申请号：US15989202
申请日：2018-05-25
Applicant: TIANJIN POLYTECHNIC UNIVERSITY
Inventor： Changfa Xiao , Jingjing Yan , Chun Wang , Xiaoyu Hu , Mingxing Chen , Hailiang Liu , Shulin An
CPC classification number: B01D69/088 , B01D67/0079 , B01D69/04 , B01D69/081 , B01D69/10 , B01D69/148 , B01D71/34
Abstract: A homogeneous fiber reinforced PVDF hollow fiber membrane and a preparation method thereof are provided. The membrane includes a hollow tubular reinforcement made of PVDF fibers and a polymer separation layer made of PVDF casting solution; wherein the polymer separation layer casting solution comprises 4-25% PVDF resin, 5-20% pore-forming agent, 0-3% inorganic particles and 52-91% solvent according to mass fraction. The preparation method includes steps of: (1) preparing a hollow tubular reinforcement made of PVDF fibers; (2) preparing a PVDF polymer separation layer casting solution; and (3) obtaining the homogeneous fiber reinforced PVDF hollow fiber membrane.
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公开(公告)号：US10906006B2
公开(公告)日：2021-02-02
申请号：US15989202
申请日：2018-05-25
Applicant: TIANJIN POLYTECHNIC UNIVERSITY
Inventor： Changfa Xiao , Jingjing Yan , Chun Wang , Xiaoyu Hu , Mingxing Chen , Hailiang Liu , Shulin An
Abstract: A homogeneous fiber reinforced PVDF hollow fiber membrane and a preparation method thereof are provided. The membrane includes a hollow tubular reinforcement made of PVDF fibers and a polymer separation layer made of PVDF casting solution; wherein the polymer separation layer casting solution comprises 4-25% PVDF resin, 5-20% pore-forming agent, 0-3% inorganic particles and 52-91% solvent according to mass fraction. The preparation method includes steps of: (1) preparing a hollow tubular reinforcement made of PVDF fibers; (2) preparing a PVDF polymer separation layer casting solution; and (3) obtaining the homogeneous fiber reinforced PVDF hollow fiber membrane.
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