Dielectric properties of graphene-filled epoxy nanocomposite with enhanced thermal conductivity
| Autor: | He Li, Mengchu Cai, Zongren Peng, Ziyu Zhou, Chuang Wang, Huidong Tian, Ao Gong |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Thermogravimetric analysis Materials science Nanocomposite Graphene 02 engineering and technology Epoxy Dielectric Conductivity 021001 nanoscience & nanotechnology Thermal diffusivity 01 natural sciences law.invention law visual_art 0103 physical sciences visual_art.visual_art_medium Composite material 0210 nano-technology Glass transition |
| Zdroj: | 2017 International Symposium on Electrical Insulating Materials (ISEIM). |
| DOI: | 10.23919/iseim.2017.8088699 |
| Popis: | The development of advanced dielectric materials with high thermal conductivity is of crucial importance in modern electronic and power equipment systems. Herein, multilayer graphene nanosheets/epoxy nanocomposites with enhanced thermal conductivity were fabricated by solution blended processes. It was found that the incorporation of graphene nanosheets had little impact on thermogravimetric properties of epoxy composite but had a certain effect on glass transition temperature (Tg), which increased by 4.63 °C with the incorporation of 0.1 wt.% graphene nanosheets. The incorporation of graphene nanosheets also increased dielectric constant and loss as well as DC conductivity in different ranges. At 25 C and 50 Hz, in contrast with the neat epoxy composite, dielectric constant increased by 36.87 % with incorporation of 0.5 wt.% graphene nanosheets. The thermal conductivity and diffusivity increased by 34.59 % and 24.37 % respectively with the incorporation of 0.5 wt.% graphene nanosheets. The incorporation of uniformly dispersed graphene nanosheets into polymer matrix as thermal conductive fillers paves a way to expand the application of polymer materials in electronic packaging fields. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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