Title:
AEROGEL COMPOSITE MEMBRANE, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/000608
Kind Code:
A1
Abstract:
An aerogel composite membrane, a preparation method therefor and the use thereof. The aerogel composite membrane includes a non-woven fabric supporting layer and an aerogel filling layer. The aerogel composite membrane has a multi-sized pore structure, which includes submicron/micron-sized pores having a pore size of 0.5-20 μm and nano-sized pores having a pore size of 2-100 nm. The thickness of the aerogel composite membrane is 0.1-1 mm. The aerogel composite membrane obtained after drying at a normal pressure has an excellent mechanical property, good hydrophobicity, relatively good heat insulation performance, and can be applied in membrane distillation technology for treating seawater, high-salinity wastewater, etc., wherein a water flux can reach 12.2 LMH, and the salt rejection rate reaches up to 99.9%. In addition, the solvents used in the preparation method are merely water and an alcohol, aging and drying steps are carried out in an oven, and solvent replacement is not used in subsequent treatment steps, such that the use of a large amount of an organic solvent is avoided and the difficulty of waste liquid treatment is reduced. The method is more green and environmentally friendly.
Inventors:
ZHENG YUMING (CN)
WANG TINGYU (CN)
SHAO ZAIDONG (CN)
WANG TINGYU (CN)
SHAO ZAIDONG (CN)
Application Number:
PCT/CN2020/103237
Publication Date:
January 06, 2022
Filing Date:
July 21, 2020
Export Citation:
Assignee:
INST URBAN ENVIRONMENT CAS (CN)
International Classes:
B01D61/36; B01J13/00; B01D69/02; B01D69/12
Foreign References:
| CN110944744A | 2020-03-31 | |||
| CN109180142A | 2019-01-11 | |||
| CN110944733A | 2020-03-31 | |||
| CN110339814A | 2019-10-18 | |||
| CN107335345A | 2017-11-10 | |||
| CN101829502A | 2010-09-15 | |||
| US20110113958A1 | 2011-05-19 |
Attorney, Agent or Firm:
YUHONG INTELLECTUAL PROPERTY LAW FIRM (CN)
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