新型炭材料Issue(6)：419-425,7.DOI:10.1016/S1872-5805(14)60146-3
碳纳米管对环氧树脂基纳米复合材料的力学和电学性能影响
Effects of carbon nanotube content on the mechanical and electrical properties of epoxy_based composites
F Vahedi 1H R Shahverdi 1M M Shokrieh 2M Esmkhani2
作者信息
- 1. Materials Science and Engineering Department, Faculty of Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway 14115_111, Tehran, Iran
- 2. Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, Mechanical Engineering Department, Iran University of Science and Technology 16846_13114, Tehran, Iran
- 折叠
摘要
Abstract
The effects of multi¯wall carbon nanotube ( MWCNT) content on the mechanical and electrical properties of MWCNT/epoxy composites were investigated. Results indicate that both tensile strength and flexural modulus exhibit maxima at MWCNT con¯ tents of 0.1% and 0. 25% (mass fraction), respectively. The tensile modulus increases and the strain to failuredecreases with MWCNT content, indicating a transition from plastic to brittle failure with increasing MWCNT content. The flexural strength of a sample with a MWCNT content of 0. 05% is the highest. The electrical percolation threshold of the composite is found to occur at a 0. 5% MWCNT addition. A good dispersion of MWCNTs in epoxy is important to improve the mechanical properties of the com¯ posites. A non¯uniform dispersion leads to agglomeration of MWCNTs, which causes an early¯stage failure under loading. The elec¯ trical properties of the composites are less affected by the presence of agglomerates.关键词
多壁碳纳米管/力学和电学性能/纳米复合材料/拉伸性能/硬度/弯曲性能Key words
Multi¯wall carbon nanotubes/Mechanical and electrical properties/Nanocomposites/Tensile properties/Stiffness/Flexural properties分类
通用工业技术引用本文复制引用
F Vahedi,H R Shahverdi,M M Shokrieh,M Esmkhani..碳纳米管对环氧树脂基纳米复合材料的力学和电学性能影响[J].新型炭材料,2014,(6):419-425,7.
