Title:
NANOFIBER FOR FILTER MEDIUM, FILTER MEDIUM COMPRISING SAME, METHOD FOR PRODUCING SAME, AND FILTER UNIT COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2017/026876
Kind Code:
A1
Abstract:
A nanofiber for a filter medium is provided. The nanofiber according to one embodiment of the present invention comprises fiber-forming ingredients including polyacrylonitrile (PAN) and polyvinylidene fluoride (PVDF) and an emulsifying agent for improving the miscibility of the fiber-forming ingredients. Configured as such, the nanofiber has excellent mechanical strength and chemical resistance and, at the same time, significantly increased hydrophilicity without a separate surface modification/treatment to/on the nanofiber. Accordingly, a filter medium comprising said nanofiber can exhibit improved flux and filtration efficiency as well as exhibiting excellent physical properties in a water treatment process in which a pressure equal to or more than a predetermined level is applied and which requires the filter medium to have high mechanical strength and in a water treatment process which requires chemical resistance as the liquid being filtered is strongly acidic or alkaline. Further, since the nanofiber has significantly superior spinnability, the mass productivity of the filter medium is significantly improved, and the unit costs of production can be reduced.
Inventors:
JEONG UI YOUNG (KR)
Application Number:
PCT/KR2016/008991
Publication Date:
February 16, 2017
Filing Date:
August 16, 2016
Export Citation:
Assignee:
AMOGREENTECH CO LTD (KR)
International Classes:
D04H1/43; B01D61/02; B01D63/08; B01D67/00; C02F1/44; D04H1/4318; D04H1/4374; D04H1/548; D04H1/728
Foreign References:
| KR100871440B1 | 2008-12-03 | |||
| KR20140103866A | 2014-08-27 | |||
| CN102872729A | 2013-01-16 | |||
| KR20140025579A | 2014-03-04 | |||
| KR20140038157A | 2014-03-28 |
Attorney, Agent or Firm:
ERUUM & LEEON INTELLECTUAL PROPERTY LAW FIRM (KR)
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