期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 128, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2019.105670
关键词
Polymer-matrix composites (PMCs); Thermal properties; Electron microscopy; Casting
资金
- Foundation of National Natural Science Foundation of China [51973173, 51773169, 51903207]
- Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province of China [2019JC-11]
- Natural Science Basic Research Plan in Shaanxi Province of China [2018JM5001]
- Scientific and Technological Innovation Team of Henan Province University [19IRTSTHN024]
- Priority Research and Development Foundations of Shaanxi Provincial Government [2018GY-174, 2018GY-115]
- Henan University of Science and Technology
- Fundamental Research Funds for the Central Universities [310201911py010]
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX201920]
3D copper nanowires-thermally annealed graphene aerogel (CuNWs-TAGA) framework is firstly prepared by freeze-drying followed by thermal annealing from CuNWs, graphene oxide (GO) and L-ascorbic acid. Epoxy resin is then poured back into the above 3D CuNWs-TAGA framework to fabricate the CuNWs-TAGA/epoxy nanocomposites. CuNWs with average diameter of about 120 nm and length of approximate 10 gm are successfully prepared. When the mass fraction of CuNWs-TAGA is 7.2 wt% (6.0-1.2 wt% CuNWs-TAGA), the thermal conductivity coefficient (lambda) value of the CuNWs-TAGA/epoxy nanocomposites reaches the maximum of 0.51 W/mK. Meantime, the CuNWs-TAGA/epoxy nanocomposites exhibit the maximum electromagnetic interference shielding effectiveness (EMI SE) value of 47 dB and electrical conductivity (sigma) of 120.8 S/m, ascribed to perfect 3D CuNWs-TAGA conductive network structures. Meanwhile, the corresponding elasticity modulus, hardness, glass transition temperature (T-g) and heat-resistance index (T-HIR) of the CuNWs-TAGA/epoxy nanocomposites increase to 4.69 GPa, 0.33 GPa, 126.3 degrees C and 181.7 degrees C, respectively.
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