MULTI-DIMENSIONAL HYDROPHILIC-HYDROPHOBIC COMPOSITE NANOFIBER MEMBRANE AND PREPARATION METHOD THEREOF

WIPO Patent Application WO/2020/134836

A1

A multi-dimensional hydrophilic-hydrophobic composite nanofiber membrane and a preparation method thereof. The multi-dimensional hydrophilic-hydrophobic composite nanofiber membrane comprises a first hydrophobic layer (1), a first hydrophilic layer (2), a second hydrophilic layer (3), and a second hydrophobic layer (4) sequentially provided from top to bottom. A water contact angle of the first hydrophobic layer (1) and a water contact angle of the second hydrophobic layer (4) are greater than 90 degrees. A water contact angle of the first hydrophilic layer (2) and a water contact angle of the second hydrophilic layer (3) are less than 70 degrees. The second hydrophobic layer (4) is a nanofiber-based membrane. The above composite nanofiber membrane having a multi-dimensional hydrophilic-hydrophobic gradient structure is prepared by means of plasma technology and electrospinning technology. The membrane material achieves directional adsorption and fixation of particulate matter, and has a good filtration effect.

GAO MING (CN)
LI JIA (CN)
HUANG YIFAN (CN)
YU XUEFENG (CN)

PCT/CN2019/121564

July 02, 2020

November 28, 2019

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SHENZHEN INST OF ADV TECH CAS (CN)

B32B27/02; B01D71/26; B01D71/34; B01D71/42; B01D71/48; B01D71/68; D04H1/728; D06M10/00; A62B18/02; B01J20/26

CN109731483A	2019-05-10
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CN106582563A	2017-04-26
KR20100004141A	2010-01-13
KR20100004141A	2010-01-13
CN103963393A	2014-08-06

BEIJING CHENGHUI LAW FIRM (CN)

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