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Title:
HYDROPHOBIC AND LIPOPHILIC HOLLOW FIBER COMPOSITE FILM AND PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/020436
Kind Code:
A1
Abstract:
Provided are a hydrophobic and lipophilic hollow fiber composite film and preparation method thereof. The film consists of a hollow braided tube and a surface separation layer coated on a surface thereof, wherein a film-forming polymer in the surface separation layer is polyvinylidene fluoride, and other components are all hydrophobic components and comprise graphene therein. The preparation method comprises the following steps: 1) braiding, by using a 2D braiding technique, polyester fibers into a hollow braided tube to serve as a reinforcement member; 2) preparing a surface separation layer molding solution by dissolving polyvinylidene fluoride, a hydrophobic pore-forming agent and graphene in a solvent, with the solvent as the balance; 3) pre-treating the reinforcement member; and 4) coating, by using a co-extrusion conjugate spinning technique, a surface of the reinforcement member with the surface separation layer molding solution, curing and post-treating the same, then replacing the reinforcement member by the same, and repeatedly performing, by using the co-extrusion conjugate spinning technique, coating for 1-5 times to obtain a product. The preparation method is simple, easy to operate, and suitable for commercial-scale production. The obtained product has sustainable and stable hydrophobicity, and can be applied to continuous oil-water separation.

Inventors:
XIAO, Changfa (No.399 Binshui West Street, Xiqing District, Tianjin 7, 300387, CN)
HAO, Junqiang (No.399 Binshui West Street, Xiqing District, Tianjin 7, 300387, CN)
ZHAO, Jian (No.399 Binshui West Street, Xiqing District, Tianjin 7, 300387, CN)
LIU, Hailiang (No.399 Binshui West Street, Xiqing District, Tianjin 7, 300387, CN)
HUANG, Qinglin (No.399 Binshui WestStreet, Xiqing District, Tianjin 7, 300387, CN)
Application Number:
CN2015/093148
Publication Date:
February 09, 2017
Filing Date:
October 29, 2015
Export Citation:
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Assignee:
TIANJIN POLYTECHNIC UNIVERSITY (No.399 Binshui West Street, Xiqing District, Tianjin 7, 300387, CN)
International Classes:
B01D69/12; B01D69/08; B01D71/34
Foreign References:
CN102600734A2012-07-25
CN104607064A2015-05-13
CN104056558A2014-09-24
CN103801274A2014-05-21
KR20150072533A2015-06-30
Attorney, Agent or Firm:
TIANJIN CAIZHI PATENT & TRADEMARK AGENCY,LTD. (No.2-1302 of Building A of Yunlangxinju No.149 of Weijin Road, Heping District, Tianjin 1, 300051, CN)
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