Title:
PREPARATION METHOD FOR PERFLUOROTRIETHYLAMINE GROUP-BASED HIGHLY THERMALLY CONDUCTIVE AND LUBRICATING NANOFLUID
Document Type and Number:
WIPO Patent Application WO/2020/052293
Kind Code:
A1
Abstract:
A preparation method for a perfluorotriethylamine group-based highly thermally conductive and lubricating nanofluid, belonging to the field of composite liquid working medium preparation for fluid circuit systems for spacecrafts. The preparation of a fluorinated graphene-perfluorotriethylamine group nanofluid realizes efficient heat exchange and effective lubrication of a fluid circuit system. The present invention successfully prepares multi-layer fluorinated graphene by fluorinating graphene oxide by means of the hydrothermal method and using hydrofluoric acid as a fluorinating reagent, the experimental apparatus being simple, and the preparation process being easy to operate. Furthermore, the fluorine content in the surface of the graphene can be adjusted controllably. The fluorinated graphene has good dispersibility in the perfluorotriethylamine working medium, and as no dispersant is required, the thermal resistance of the heat transfer interface can be reduced and the thermal conductivity of the nanofluid can be significantly improved. Fluorine atoms are inserted between layers of the graphene, increasing spacing between the layers, reducing the force between the layers; moreover, the strong repulsive force between the fluorine atoms facilitates sliding between the layers, significantly improving the abrasion-reduction and lubrication performance of the nanofluids.
Inventors:
LIU JINLONG (CN)
BAI MINGJIE (CN)
LI CHENGMING (CN)
MIAO JIANYIN (CN)
HE JIANG (CN)
WEI JUNJUN (CN)
CHEN LIANGXIAN (CN)
LI ZHENYU (CN)
BAI MINGJIE (CN)
LI CHENGMING (CN)
MIAO JIANYIN (CN)
HE JIANG (CN)
WEI JUNJUN (CN)
CHEN LIANGXIAN (CN)
LI ZHENYU (CN)
Application Number:
PCT/CN2019/090315
Publication Date:
March 19, 2020
Filing Date:
June 06, 2019
Export Citation:
Assignee:
UNIV BEIJING SCIENCE & TECHNOLOGY (CN)
International Classes:
C09K5/10; C01B32/194; C10M169/04; C10N30/06
Foreign References:
| CN109021935A | 2018-12-18 | |||
| CN102732230A | 2012-10-17 | |||
| CN103288069A | 2013-09-11 | |||
| CN103588197A | 2014-02-19 | |||
| CN105154028A | 2015-12-16 | |||
| CN106118611A | 2016-11-16 | |||
| GB2557739A | 2018-06-27 | |||
| KR20130075545A | 2013-07-05 |
Attorney, Agent or Firm:
BEIJING GUANGYOU PATENT FIRM CO., LTD (CN)
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