Improved thermal conductivity of polycarbonate composites filled with hybrid exfoliated graphite/multi-walled carbon nanotube fillers

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• 作者：Feng Zhang ; Qiuying Li ; Yujin Liu…
• 关键词：Polycarbonate ; Carbon filler ; Thermal conductivity ; Hybrid filler
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：123
• 期：1
• 页码：431-437
• 全文大小：1,189 KB
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• 作者单位：Feng Zhang (1)
  Qiuying Li (1)
  Yujin Liu (1)
  Shijie Zhang (1)
  Chifei Wu (1)
  Weihong Guo (1)
  
  1. Shanghai Key Laboratory Polymeric Materials, Key Laboratory of Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Rd, Shanghai, 200237, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

The thermal conductivities of polycarbonate (PC) composites filled with carbon fillers, including carbon black (CB), multi-walled carbon nanotubes (MWCNTs) and exfoliated graphite (EG), were studied. EG filler provided substantially greater thermal conductivity enhancement when embedded into PC matrix compared with CB and MWCNTs at the same loading. To further improve the thermal conductivity of PC composite, a hybrid EG/MWCNTs filler was used. When the hybrid filler loading was 10 mass%, the radio of EG: MWCNTs was 9:1, and the thermal conductivity of PC composite showed a maximum value of 1.19 W m−1 K−1 higher than that filled with EG or MWCNTs alone, indicating that the combination of EG and MWCNTs demonstrated a synergistic effect for the thermal conductivity enhancement of PC. EG/MWCNTs/PC composite with thermal conductivity >5 W m−1 K−1 was fabricated when the filler content was 40 mass%, which would widen its field of applications in electrons, LED lamps and aerospace.