Phase change materials coated with modified graphene-oxide as fillers for silicone rubber used in thermal interface applications

FENG Jing; LIU Zhan-jun; ZHANG Dong-qing; HE Zhao; TAO Ze-chao; GUO Quan-gui

doi:10.1016/S1872-5805(19)60011-9

Volume 34 Issue 2

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Article Navigation > New Carbon Mater. > 2019 > 34(2): 188-195

FENG Jing, LIU Zhan-jun, ZHANG Dong-qing, HE Zhao, TAO Ze-chao, GUO Quan-gui. Phase change materials coated with modified graphene-oxide as fillers for silicone rubber used in thermal interface applications. New Carbon Mater., 2019, 34(2): 188-195. doi: 10.1016/S1872-5805(19)60011-9

Citation:

FENG Jing, LIU Zhan-jun, ZHANG Dong-qing, HE Zhao, TAO Ze-chao, GUO Quan-gui. Phase change materials coated with modified graphene-oxide as fillers for silicone rubber used in thermal interface applications. New Carbon Mater., 2019, 34(2): 188-195. doi: 10.1016/S1872-5805(19)60011-9

Citation:

FENG Jing, LIU Zhan-jun, ZHANG Dong-qing, HE Zhao, TAO Ze-chao, GUO Quan-gui. Phase change materials coated with modified graphene-oxide as fillers for silicone rubber used in thermal interface applications. New Carbon Mater., 2019, 34(2): 188-195. doi: 10.1016/S1872-5805(19)60011-9

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Phase change materials coated with modified graphene-oxide as fillers for silicone rubber used in thermal interface applications

doi: 10.1016/S1872-5805(19)60011-9

1.
CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds: National Natural Science Foundation of China (51303198); Youth Innovation Promotion Association of CAS (2017205).

Received Date: 2019-01-01
Accepted Date: 2019-04-30
Rev Recd Date: 2019-03-20
Publish Date: 2019-04-28

Abstract

Abstract

Graphene oxide prepared by the Hummers method was chemically modified by 3-aminopropyltriethoxysilane and spherical paraffin@modified graphene-oxide particles (P@m-GO) with a core-shell structure were obtained by an emulsion method. P@m-GO filler/silicone rubber (SIR) matrix composites (P@m-GO/SIR) were prepared by dispersing different amounts of P@m-GO in the SIR precursors, followed by curing and were used as thermal interface materials (TIMs). Results indicate that the best TIM had a P@m-GO loading of 60 wt.% and had both a high thermal conductivity (1.248 W·m^-1·K^-1) and a high latent heat (88.7 J·g^-1). Its compression elastic modulus (1.01 MPa) was only one-eighth of that of the pristine SIR (8.16 MPa) due to the plasticity of the paraffin. The paraffin leakage under pressure was low (below 3.98 wt.%) before and after thermal cycling 50 times. These favorable thermal and mechanical properties together with the good cycling stability make it a promising TIM for electronic devices.
- Thermal interface materials,
- Phase change fillers,
- Graphene-oxide,
- Thermal transfer,
- Flexibility

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References(20)

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