Title:
POLYIMIDE COMPOSITE NANOFIBER MEMBRANE HAVING SANDWICH STRUCTURE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/015705
Kind Code:
A1
Abstract:
A polyimide composite nanofiber membrane having a sandwich structure and a preparation method therefor, which belong to the field of polymer dielectric materials. The polyimide composite nanofiber membrane having a sandwich structure of the present invention comprises a three layer structure, which, in order, is a polyimide nanofiber membrane layer, a polyvinylidene fluoride-polytetrafluoroethylene nanofiber membrane layer, and a polyimide nanofiber membrane layer. By means of adjustment of a material structure while simultaneously introducing a fluoropolymer and a porous structure, the dielectric constant and the dielectric dissipation factor of the polyimide nanofiber membrane are thereby greatly lowered.
Inventors:
CHENG SI (CN)
YU JIACHENG (CN)
YU JIACHENG (CN)
Application Number:
PCT/CN2021/122787
Publication Date:
February 16, 2023
Filing Date:
October 09, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
D04H1/728; D04H1/4318; D04H1/4374
Foreign References:
| CN107834006A | 2018-03-23 | |||
| US20120251853A1 | 2012-10-04 | |||
| CN102189724A | 2011-09-21 | |||
| CN104911814A | 2015-09-16 | |||
| CN102230257A | 2011-11-02 | |||
| CN109412456A | 2019-03-01 |
Other References:
WU DEZHI, SHI CHUAN, HUANG SHAOHUA, QIU XIAOCHUN, WANG HUAN, ZHAN ZHAN, ZHANG PENG, ZHAO JINBAO, SUN DAOHENG, LIN LIWEI: "Electrospun Nanofibers for Sandwiched Polyimide/Poly (vinylidene fluoride)/Polyimide Separators with the Thermal Shutdown Function", ELECTROCHIMICA ACTA, ELSEVIER, AMSTERDAM, NL, vol. 176, 1 September 2015 (2015-09-01), AMSTERDAM, NL , pages 727 - 734, XP093034692, ISSN: 0013-4686, DOI: 10.1016/j.electacta.2015.07.072
DONG ZHE-QIN; MA XIAO-HUA; XU ZHEN-LIANG; YOU WEN-TING; LI FANG-BING: "Superhydrophobic PVDF–PTFE electrospun nanofibrous membranes for desalination by vacuum membrane distilla", DESALINATION., ELSEVIER, AMSTERDAM., NL, vol. 347, 17 June 2014 (2014-06-17), NL , pages 175 - 183, XP028872966, ISSN: 0011-9164, DOI: 10.1016/j.desal.2014.05.015
DONG ZHE-QIN; MA XIAO-HUA; XU ZHEN-LIANG; YOU WEN-TING; LI FANG-BING: "Superhydrophobic PVDF–PTFE electrospun nanofibrous membranes for desalination by vacuum membrane distilla", DESALINATION., ELSEVIER, AMSTERDAM., NL, vol. 347, 17 June 2014 (2014-06-17), NL , pages 175 - 183, XP028872966, ISSN: 0011-9164, DOI: 10.1016/j.desal.2014.05.015
Attorney, Agent or Firm:
CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)
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