Title:
PREPARATION METHOD FOR ORGANIC-INORGANIC PIPERAZINE POLYAMIDE COMPOSITE CERAMIC NANOFILTRATION MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2020/200289
Kind Code:
A1
Abstract:
A preparation method for an organic-inorganic piperazine polyamide composite ceramic nanofiltration membrane. A crosslinking agent is loaded on an alkali-activated ceramic membrane, and then, with piperazine as an aqueous phase monomer, with trimesoyl chloride as an organic phase monomer, and with a polyamine as an acid acceptor, an organic functional layer is formed on a surface of the ceramic membrane by means of an interfacial polymerization reaction, thereby obtaining an organic-inorganic piperazine polyamide composite ceramic nanofiltration membrane. The hole diameter of an inorganic functional layer of the ceramic membrane is 10-100 nm. The material of the ceramic membrane is aluminum oxide, titanium oxide, or zirconium oxide, and the crosslinking agent is polyethylene glycol or a cellulosic crosslinking agent. The membrane layer width of a polyamide dense functional layer of the ceramic membrane is 300-400 nm, and the membrane surface has a water contact angle of 38°.
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Inventors:
CHEN YUNQIANG (CN)
HONG YUBIN (CN)
LAN WEIGUANG (CN)
HONG YUBIN (CN)
LAN WEIGUANG (CN)
Application Number:
PCT/CN2020/083027
Publication Date:
October 08, 2020
Filing Date:
April 02, 2020
Export Citation:
Assignee:
SUNTAR MEMBRANE TECHNOLOGY XIAMEN CO LTD (CN)
International Classes:
B01D71/02; B01D69/12; B01D71/56
Foreign References:
| CN110038437A | 2019-07-23 | |||
| CN110038438A | 2019-07-23 | |||
| CN108554187A | 2018-09-21 | |||
| CN109499395A | 2019-03-22 | |||
| CN108654407A | 2018-10-16 | |||
| CN107029558A | 2017-08-11 | |||
| JP2009022902A | 2009-02-05 |
Attorney, Agent or Firm:
SHOUCHUANG JUNHE PATENT AGENT CO., LTD. XIAMEN (CN)
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