Synthesis of Functionalized Carbon Nanotubes/Phenolic Nanocomposites and Its Electrical and Thermal Conductivity Measurements

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概要

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• The phenolic resins (PR) was reinforced with carbon nanotubes (CNTs) to improve its electrical, thermal and mechanical properties with CNTs in different contents. The results indicate that by adding multi wall carbon nanotubes (MWNTs) up to 10% in weight, the thermal conductivity of the nanocomposites can increase from 0.612 to 1.473 W m-1 K-1 while the electric conductivity increase significantly from 0 to 135.52 ms. In order to further disperse the MWNTs in PR, two different methods to modify MWNTs, such as carboxyl MWNTs (c-MWNTs) and surfactant (sodium dodecyl sulfate, or SDS) modified MWNTs (SDS-MWNTs), were adopted. The transmission electron microscopy (TEM) images reveal that the length of the c-MWNT becomes much shorter, while the length of SDS-MWNT has no significant change. Measurements by ultraviolet–visible (UV–vis) spectrophotometer indicate that for MWNTs dispersion in alcohol the absorption spectrum of c-MWNTs dispersion is much higher than both the SDS-MWNTs and the as-grown MWNTs dispersion. In addition, with better dispersion of SDS-MWNTs in PR, both the electrical and the thermal conductivity of SDS-MWNT/PR nanocomposites are found higher. However, the lower thermal conductivity of c-MWNTs/PR composites may be attributed to shortening of the MWNTs by the attack of acidic treatment.

• 2009-06-25

著者

• Chien Ting-Hua

  Aeronautical Systems Research Division, Chung-Shan Institute of Science and Technology, Taichung 407, Taiwan

• Gau Chie

  Institute of Aeronautics and Astronautics, and Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan

• Lee Cheng-Ching

  Aeronautical Systems Research Division, Chung-Shan Institute of Science and Technology, Taichung 407, Taiwan

• Chen Shuo-Ying

  Institute of Aeronautics and Astronautics, and Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan

• Tsai Hsin-Luen

  Department of Electronic Engineering, Kao Yuan University, Kaohsiung 821, Taiwan

• Jenq Syh-Tsang

  Institute of Aeronautics and Astronautics, and Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan

• Chen Yu-Der

  Aeronautical Systems Research Division, Chung-Shan Institute of Science and Technology, Taichung 407, Taiwan

関連論文

• Enhancement of Conductivity for Poly(ethylene terephthalate) Matrix Reinforced with Carbon Nanotubes
• Synthesis of Functionalized Carbon Nanotubes/Phenolic Nanocomposites and Its Electrical and Thermal Conductivity Measurements

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