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Study on the Properties of Graphene/TOCNs Thermal Conduction Composite
  
DOI：10.11980/j.issn.0254-508X.2019.05.002
Key Words:graphene  TOCNs  thermal conductivity
Fund Project:十三五国家重点研发计划项目（2017YFB0308302）；轻化工程国家级实验教学示范中心（陕西科技大学）开放课题资助项目（2018QGSJ02-01）；陕西省科技厅科技统筹创新工程计划项目（2016KTCQ01-87）；华南理工大学制浆造纸工程国家重点实验室开放基金资助项目（201733）。
Author NameAffiliation
JIA Fengfeng1 1.College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology，Shaanxi Province Key Lab of Paper-making Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 
XIE Fan1，2 1.College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology，Shaanxi Province Key Lab of Paper-making Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021
2.State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 
NING Doudou1 1.College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology，Shaanxi Province Key Lab of Paper-making Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 
WANG Danni1 1.College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology，Shaanxi Province Key Lab of Paper-making Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 
JIN Zhanfan1 1.College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology，Shaanxi Province Key Lab of Paper-making Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 
LU Zhaoqing1，* 1.College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology，Shaanxi Province Key Lab of Paper-making Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 
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Abstract:Graphene/TOCNs thermal conducting composites using TEMPO Oxidized Cellulose Nanofibers （TOCNs） as basic material and graphene as thermal conduction material were prepared via vacuum assisted filtration.Thermal conductivity， thermal stability， mechanics performance and electrical conductivity were characterized by thermal conductivity tester， thermo gravimetric analyzer （TG）， sew multifunctional high and low temperature control testing machine and multifunctional digital four-probe tester， respectively.The results showed that the thermal conductivity of the composite material achieved a 38.27% enhancement from 1.006 W/（m·K） of the pristine TOCNs to 1.391 W/（m·K） when the content of graphene was 40%.The temperature of Tg10% thermal decomposition achieved a 10.4% promotion from 214.8℃of the pristine TOCNs to 237.2℃ when the content of graphene was 40%. Meanwhile， the tensile strength and surface resistance of graphene/TOCNs composite material achieved 37.64 MPa and 87.75 Ω/□ respectively when 40% graphene was added.
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