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Title:
LARGE-SCALE PREPARATION METHOD FOR THREE-DIMENSIONAL POROUS NANO COMPOSITE COOLING THIN FILM
Document Type and Number:
WIPO Patent Application WO/2022/166345
Kind Code:
A1
Abstract:
A three-dimensional porous nano composite cooling thin film and a large-scale preparation method therefor. The cooling thin film material uses 0.1-0.5 parts of cellulose acetate, 1-5 parts of water, 20-100 parts of acetone, other auxiliaries, and 10-20 parts of nano-microspheres as raw materials, and is prepared by means of the synergistic cooperation of the cellulose acetate, nano-microsphere particles, and other auxiliaries, the composite thin film being obtained by the self-deposition of cellulose acetate and nano-microspheres, and the volatilisation of liquid during the film-forming process resulting in the generation of three-dimensional pores; the thin film has the effect of enhancing the radiation of infrared heat to space, significantly reducing the surface temperature of the substrate and implementing rapid strong cooling, so that the objective of effective cooling can be reached without the need for active cooling equipment such as external power and with or without sunlight irradiation.

Inventors:
TANG SHAOCHUN (CN)
ZHANG RONG (CN)
XIANG BO (CN)
SHEN YUCHUN (CN)
Application Number:
PCT/CN2021/134098
Publication Date:
August 11, 2022
Filing Date:
November 29, 2021
Export Citation:
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Assignee:
UNIV NANJING (CN)
HAIAN INSTITUTE OF HIGH TECH RESEARCH NANJING UNIV (CN)
International Classes:
C04B38/00; B29D7/01; C04B26/24
Foreign References:
CN112679223A2021-04-20
CN112250973A2021-01-22
CN108250873A2018-07-06
CN108641155A2018-10-12
CN103785300A2014-05-14
CN101574628A2009-11-11
US20180354848A12018-12-13
Other References:
"Medical Immunology", 31 July 1980, JILIN PEOPLE’S PUBLISHING HOUSE, CN, article EDITED BY YANG, GUIZHEN: "Chapter 23 - Cellulose Acetate Membrane Electrophoresis", pages: 284, XP009538870
Attorney, Agent or Firm:
BEIJING FINELAND IP FIRM (CN)
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