Microstructure and thermoelectric properties of carbon nanotube-carbon fiber/cement composites

被引：0
|
作者：
机构：
[1] Yao, Wu
[2] Zuo, Jun-Qing
[3] Wu, Ke-Ru
来源：
Yao, W. | 1924年 / Journal of Functional Materials, P.O. Box 1512, Chongqing, 630700, China卷 / 44期
关键词：
Carbon fibers - Yarn - Cements - Scanning electron microscopy - Thermoelectric equipment - Carbon nanotubes - Thermoelectricity;
D O I：
10.3969/j.issn.1001-9731.2013.13.025
中图分类号：
学科分类号：
摘要：
The microstructure of the cement pastes was investigated by scanning electron microscopy. Thermoelectric properties of carbon nanotube-carbon fiber/cement composites were also measured during the heating and cooling process. Results show that carbon nanotubes act as fillers, which results in a dense microstructure of cement paste, when carbon nanotube is at a low content (less than 0.5% by mass of cement). The doping of CNTs leads to a highest increase (up to 260%) reaching 22.6μV/°C in the positive thermoelectric power of the cabon fiber/cement composites, when CNTs addition reaches 0.5% by weight of cement. Besides, the linearity and reversibility of the Seebeck effect was improved.
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