Title:
UPE POROUS MEMBRANE HAVING HIGH SPECIFIC SURFACE AREA, PREPARATION METHOD THEREFOR, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/040880
Kind Code:
A1
Abstract:
The present invention provides a UPE porous membrane having a high specific surface area, a preparation method therefor, and a use thereof. The porous membrane comprises a first porous outer surface, a second porous outer surface, and a main body located between the first porous outer surface and the second porous outer surface. A non-directional tortuous path is provided in the main body. The specific surface area of the UPE porous membrane is not less than 35m2/g, and the specific surface area is high. A plurality of branched and continuous first fibers are provided on the first porous outer surface, and a first hole is formed around adjacent continuous first fibers. The first fibers in the thickness direction are stacked on one another. The first fibers have an average diameter of 10-60 nm. The UPE porous membrane is a symmetric membrane. The UPE porous membrane having a high specific surface area can perform entrapment by means of the membrane holes while also performing entrapment by adsorption, having excellent trapping performance for nano-scale fine impurities and having high entrapment efficiency. The UPE porous membrane is suitable for application in the field of photoresist filtering. The preparation method provided by the present invention can conveniently, quickly, and effectively prepare the UPE porous membrane.
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Inventors:
CHEN RITCHIE (CN)
LV HARRY (CN)
LV HARRY (CN)
Application Number:
PCT/CN2022/118659
Publication Date:
March 23, 2023
Filing Date:
September 14, 2022
Export Citation:
Assignee:
ZHANG CHAY (CN)
International Classes:
B01D71/26; B01D67/00; B01D69/02
Foreign References:
| CN113694745A | 2021-11-26 | |||
| CN113274889A | 2021-08-20 | |||
| CN113351033A | 2021-09-07 | |||
| CN113332861A | 2021-09-03 | |||
| US20200139309A1 | 2020-05-07 | |||
| CN112642297A | 2021-04-13 | |||
| CN102527260A | 2012-07-04 | |||
| US20090274955A1 | 2009-11-05 |
Attorney, Agent or Firm:
HANGZHOU CHUANGZHIZHUOYING INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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