Electroconductivity and wettability of nanofluids prepared by carbon nanotubes/oleic acid composite

GUAN Jiju; LIU Deli; WANG Yong; FENG Bohua; XU Xuefeng

doi:10.13801/j.cnki.fhclxb.20200313.001

Volume 37 Issue 10

Oct. 2020

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GUAN Jiju, LIU Deli, WANG Yong, et al. Electroconductivity and wettability of nanofluids prepared by carbon nanotubes/oleic acid composite[J]. Acta Materiae Compositae Sinica, 2020, 37(10): 2582-2589. doi: 10.13801/j.cnki.fhclxb.20200313.001

Citation:

GUAN Jiju, LIU Deli, WANG Yong, et al. Electroconductivity and wettability of nanofluids prepared by carbon nanotubes/oleic acid composite[J]. Acta Materiae Compositae Sinica, 2020, 37(10): 2582-2589. doi: 10.13801/j.cnki.fhclxb.20200313.001

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Electroconductivity and wettability of nanofluids prepared by carbon nanotubes/oleic acid composite

doi: 10.13801/j.cnki.fhclxb.20200313.001

GUAN Jiju^{1, 2
,
,},
LIU Deli^1
,,
WANG Yong²,
FENG Bohua^3
,,
XU Xuefeng^3
,

1.
College of Mechanical Engineering, Changshu Institute of Technology, Changshu 215500, China
2.
Precision Manufacturing Engineering Department, Suzhou Vocational Institute of Industrial Technology, Suzhou 215104, China
3.
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China

Received Date: 2019-11-13
Accepted Date: 2020-02-25

Available Online: 2020-03-13

Publish Date: 2020-10-15

Abstract

Abstract

The carbon nanotubes(CNTs)/oleic acid (OA) composite was prepared by filling OA into CNTs, then the nanofluid was prepared by the CNTs/oleic acid composite as additive. The conductivity and wettability of the nanofluid were investigated, and the effects of the content, acidification time, test temperature and electric field on the above properties were also studied. The results show that the composite is successfully formed with a filling rate of about 20%. During the preparing process, the end face of the CNTs is chemically modified, and the best acidification time is about 8 h. Compared with the acidified CNTs, the CNTs/OA composite has better surface activity and dispersion in the base solution, which can better improve the conductivity and wettability of the nanofluid, and the optimal content of the composite is about 0.1%. Under the condition of electrowetting, the wettability of the nanofluid with the higher content of the composite can be improved more obviously with the increase of voltage. This may be because the conductivity and capacitance of the CNTs are improved after the filling of OA, and the nanofluid prepared by the composite also has better conductivity and capacitance.
- carbon nanotubes,
- oleic acid,
- composite,
- nanofluid,
- conductivity,
- wettability
Long Abstrsct
Innovation Points

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References(29)

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