Patent · US Active

Homogeneous fiber reinforced PVDF hollow fiber membrane and preparation method thereof

US10906006B2 · kind B2 · utility

0Cited by

7References

3Claims

0Family size

Assignee

TIANJIN POLYTECHNIC UNIVERSITY · CN

Inventors

Changfa Xiao · Tianjin, CN
Jingjing Yan · Tianjin, CN
Chun-Chih Wang · Taichung, TW
Xiaoyu Hu · Tianjin, CN
Mingxing Chen · Shanghai, CN
Hailiang Liu · Beijing, CN
Shulin An · Tianjin, CN

Key dates

Filing date	May 25, 2018
Grant date	Feb 2, 2021
Priority date	—
Expiry date	Mar 22, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D69/081
WIPO fieldChemical engineering
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.