Elevated conductivity and electromagnetic interference shielding effectiveness of PVDF/PETG/carbon fiber composites through incorporating carbon black

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• 作者：Jianbin Song ; Quanping Yuan ; Huiliang Zhang ; Biao Huang…
• 关键词：PVDF ; PETG ; Carbon fiber ; Carbon black ; EMI SE
• 刊名：Journal of Polymer Research
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：22
• 期：8
• 全文大小：840 KB
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• 作者单位：Jianbin Song (1) (2)
  Quanping Yuan (2)
  Huiliang Zhang (3)
  Biao Huang (1)
  Feng Fu (2)
  
  1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  2. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, China
  3. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun, 130022, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Industrial Chemistry and Chemical Engineering
  Characterization and Evaluation Materials
  
• 出版者：Springer Netherlands
• ISSN：1572-8935

文摘

Along with the electronic products entering people’s life, the electromagnetic radiation is becoming a serious problem threatening human health. Consequently, the aim of this paper is fabricating the electromagnetic shielding materials containing carbon fiber (CF), carbon black (CB), poly(vinylidene fluoride) (PVDF) and poly(ethylene terephthalateco-1,4-cylclohexylenedimethylene terephthalate) (PETG). By adjusting CB content, the composite with high electromagnetic interference shielding effectiveness (EMI SE) was achieved. Additionally, the effects of CB on the rheological, dynamic mechanical properties, and electrical resistivity of PVDF/PETG/CF composites were investigated in detail. That CB formed the conductive networks in the PVDF/PETG/CF/CB composite at 5?% of CB and above led to the reduction in electrical resistivity and the augment of the modulus as well as the glass transition temperature of PETG. From the electrical resistivity and storage modulus points of view, the short CF exhibited the better synergistic effect with CB than the long CF did. But the lowest electrical resistivity (0.39 Ω.cm) occurred in the long CF based composites containing 15?% of CB, and its EMI SE is determined to above 30?dB over a frequency of 0.1 to 1500?MHz.