Gas Diffusivity and Thermal Conductivity of Carbon Nanotubes Dispersed Resin
Gas Diffusivity and Thermal Conductivity of Carbon Nanotubes Dispersed Resin
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DOI：
10.2514/6.2005-2002
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发表时间：
2005-04
期刊：
影响因子：
--
通讯作者：
T. Aoki;M. Sawasaki;T. Ogasawara
中科院分区：
文献类型：
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作者：
T. Aoki;M. Sawasaki;T. Ogasawara
制备了分散有多壁碳纳米管（CNT）的环氧树脂，并对其进行了氦气扩散率和热导率的实验评价。将CNT的重量含量调节为0至15%。CNT的分散有助于降低气体扩散率和增加环氧树脂的热导率。在气体扩散的情况下，碳纳米管显然充当气体扩散中的阻挡介质，结果显示出良好的协议与夹杂物模型的基础上的预测假设的CNT的零扩散。CNT分散体对热导率的影响的实验观察是相当不令人满意的，表明与采用CNT的广泛预期值的分析预测相比低得多的电导率。这可能是由于不存在渗滤效应，该效应可能在较高的CNT含量水平下出现。
Epoxy resin dispersed with multi-walled carbon nanotubes (CNT) was prepared and was subjected to the experimental evaluation of helium gas diffusivity and thermal conductivity. The weight content of CNT was adjusted to be from 0 to 15 %. The dispersion of CNT contributed to the decrease in gas diffusivity and to the increase in the thermal conductivity of the epoxy resin. In the case of gas diffusion, the CNT apparently acted as the blocking medium in gas diffusion and the results showed good agreement with the prediction based on the inclusion model assuming the null diffusivity of the CNT. The experimental observation of the effect of CNT dispersion on thermal conductivity was rather unsatisfactory, indicating much lower conductivity compared to the analytical prediction employing the widely expected value of CNT. This may be attributed to the absence of percolation effect which may appear at higher CNT content levels.