Dong Qi, Lu Chunyuan, Tulugan Kelimu, Jin Chunzi, Yoon Soo Jong, Park Yeong Min, Kim Tae Gyu
J Nanosci Nanotechnol. 2016 Feb;16(2):1843-7. doi: 10.1166/jnn.2016.11992.
Multi wall carbon nanotubes (MWCNTs) and diamond are renowned as superlative material due to their relatively high thermal conductivity and hardness while comparing with any bulk materials. In this research, polyacrylonitrile (PAN) solution incorporated with MWCNTs at an alteration of mass fractions (0 wt%, 0.6 wt%, 1 wt%, 2 wt%) were fabricated via electrospinning under optimized parameters. Dried composite nanofibers were stabilized and carbonized, after which water base polytrafluorethylene (PTFE) mixed with nano diamond powder solution was spin coated on them. Scanning electron microscopy, Raman spectroscopy, X-ray scattering and Laserflash thermal conductivity were used to characterize the composite nanofiber sheets. The result shows that the thermal conductivity increased to 4.825 W/m K from 2.061 W/mK. The improvement of thermal conductivities is suggesting the incorporation of MWCNTs.
多壁碳纳米管（MWCNTs）和金刚石因其与任何块状材料相比具有相对较高的热导率和硬度而被誉为卓越材料。在本研究中，通过在优化参数下进行静电纺丝，制备了质量分数（0 wt%、0.6 wt%、1 wt%、2 wt%）变化的掺有多壁碳纳米管的聚丙烯腈（PAN）溶液。将干燥的复合纳米纤维进行稳定化和碳化处理，然后将与纳米金刚石粉末溶液混合的水基聚四氟乙烯（PTFE）旋涂在其上。使用扫描电子显微镜、拉曼光谱、X射线散射和激光闪光热导率来表征复合纳米纤维片。结果表明，热导率从2.061 W/mK提高到了4.825 W/mK。热导率的提高表明掺入了多壁碳纳米管。
