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Sökning: onr:"swepub:oai:research.chalmers.se:492a3269-c9da-4078-91ac-5ee47ca1a9d0" > Highly Oriented Gra...

Highly Oriented Graphite Aerogel Fabricated by Confined Liquid-Phase Expansion for Anisotropically Thermally Conductive Epoxy Composites

Li, Mengxiong (författare)
Fudan University, China
Liu, Jiangwei (författare)
Fudan University, China
Pan, Shaoxue (författare)
Fudan University, China
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Zhang, Jiajia (författare)
Fudan University, China
Liu, Ya, 1991 (författare)
Chalmers tekniska högskola,Chalmers University of Technology,Fudan University, China
Liu, Johan, 1960 (författare)
Shanghai University, China,Chalmers University of Technology,Chalmers tekniska högskola
Lu, Hongbin (författare)
Fudan University, China
visa färre...
 (creator_code:org_t)
2020
2020
Engelska.
Ingår i: ACS Applied Materials & Interfaces. - 1944-8252 .- 1944-8244. ; 12:24, s. 27476-27484
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Graphene-based thermally conductive polymer composites are of great importance for the removal of the excess heat generated by electronic devices. However, due to the orientation of graphene sheets in the polymer matrix, the through-plane thermal conductivity of polymer/graphene composites remains far from satisfactory. We here demonstrate a confined liquid-phase expansion strategy to fabricate highly oriented confined expanded graphite (CEG) aerogels. After being incorporated into epoxy resin (EP), the resulting EP/CEG composites exhibit a high through-plane thermal conductivity (4.14 ± 0.21 W m-1 K-1) at a quite low filler loading of 1.75 wt % (0.91 vol %), nearly 10 times higher than that of neat EP resin and 7.5 times higher than the in-plane thermal conductivity of the composite, indicating that the CEG aerogel has a high through-plane thermal conductivity enhancement efficiency that outperforms those of many graphite/graphene-based fillers. The facile preparation method holds great industrial application potential in fabricating anisotropic thermally conductive polymer composites.

Ämnesord

NATURVETENSKAP  -- Kemi (hsv//swe)
TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)
ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Nyckelord

graphite aerogel
expanded graphite
through-plane thermal conductivity
confined expansion
high orientation

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