Title:
METHOD FOR PREPARING NON-WOVEN FABRIC SUBSTRATE-SUPPORTED POLYETHYLENE NANOFILTRATION MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2021/244163
Kind Code:
A1
Abstract:
Disclosed is a non-woven fabric substrate-supported polyethylene nanofiltration membrane, comprising a non-woven fabric substrate, a polyethylene microporous membrane, and a nanofiltration membrane skin layer. The polyethylene microporous membrane is supported on the non-woven fabric substrate so as to obtain a non-woven fabric-supported polyethylene microporous membrane. The non-woven fabric-supported polyethylene microporous membrane forms the nanofiltration membrane skin layer by means of interfacial polymerization of a polyamine aqueous-phase monomer and a polyacyl chloride oleic-phase monomer. Compared with a polyethylene microporous nanofiltration membrane without a non-woven fabric as a substrate for support, the present invention has a higher inorganic salt rejection rate, better and stable membrane filtration properties, and a longer service life. Compared with existing commercial polysulfone substrate nanofiltration membranes, the present invention can have higher flux and better overall performance while reaching the same rejection rate and service life.
Inventors:
CHENG YUE (CN)
WANG YINGJIE (CN)
QIU CHANGQUAN (CN)
ZHUANG ZHI (CN)
YU SHAOBO (CN)
WANG YINGJIE (CN)
QIU CHANGQUAN (CN)
ZHUANG ZHI (CN)
YU SHAOBO (CN)
Application Number:
PCT/CN2021/088075
Publication Date:
December 09, 2021
Filing Date:
April 19, 2021
Export Citation:
Assignee:
SHANGHAI ENERGY NEW MAT TECH CO LTD (CN)
International Classes:
B01D67/00; B01D69/10
Foreign References:
| CN111632498A | 2020-09-08 | |||
| CN101934201A | 2011-01-05 | |||
| CN104324619A | 2015-02-04 | |||
| CN101874989A | 2010-11-03 |
Attorney, Agent or Firm:
SHANGHAI YUANTONG LAW FIRM (CN)
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