Correlation between Porosity and Electrical-Mechanical Properties of Carbon Nanotube Buckypaper with Various Porosities
Correlation between Porosity and Electrical-Mechanical Properties of Carbon Nanotube Buckypaper with Various Porosities
复制标题
不同孔隙率碳纳米管巴克纸孔隙率与电机械性能的相关性
DOI：
10.1155/2015/945091
复制
发表时间：
2015-01-01
影响因子：
--
通讯作者：
Shen, Jingwen
中科院分区：
文献类型：
--
作者：
Liu, Ling;Yang, Qiaoxin;Shen, Jingwen
采用正压过滤法制备了不同孔隙率的多孔碳纳米管巴基纸。BPs的孔隙率落在11.3- 39.3%的宽范围内。然后测量制备的BP的电导率和拉伸机械性能，并与CNT BP的孔隙率相关联。结果表明，随着孔隙率的增加，BPs的电导率、拉伸强度和弹性模量均下降。另一方面，BP的断裂伸长率确实显著增加，表明BP的韧性改善。所得多孔BP的电导率和拉伸强度分别可达0.6S/m和26 MPa，在复合材料增强和导电材料方面具有潜在的应用价值。
Porous carbon nanotube (CNT) buckypapers (BPs) with various porosities were obtained by using a positive pressure filtration method. The porosity of the BPs fell into a wide range of 11.3-39.3%. Electrical conductivities and tensile mechanical properties of the prepared BPs were then measured and correlated with the porosity of the CNT BPs. Results demonstrated that the conductivities, tensile strength, and elastic modulus of the BPs could decrease by increasing their porosity. The elongation at break of the BPs on the other hand did increase significantly, suggesting improved toughness of the BPs. The obtained electrical conductivity and tensile strength of the porous BPs can reach nearly 0.6 S/m and 26 MPa, respectively, which may be potentially useful in composites reinforcement and conductive materials.