A liquid-like multiwalled carbon nanotube derivative and its epoxy nanocomposites

作者：Wu, Fei; Zheng, Yaping^*; Qu, Ping; Wang, Nan; Chen, Lixin

来源：Journal of Applied Polymer Science, 2013, 130(3): 2217-2224.

DOI：10.1002/app.39398

• composites
• nanotubes
• graphene and fullerenes
• rheology
• viscosity and viscoelasticity
• mechanical properties

Multiwall carbon nanotubes (MWCNTs) with liquid-like behavior at room temperature were prepared with sulfonic acid terminated organosilanes as corona and tertiary amine as canopy. The liquid-like MWCNT derivative had low viscosity at room temperature (3.89 Pa s at 20 degrees C) and exhibited non-Newtonian shear-thinning behavior. The weight fraction of MWCNT in the derivative was 16.72%. The MWCNT derivative showed very good dispersion in organic solvents, such as ethanol and acetone. The liquid-like MWCNT derivative was incorporated into epoxy matrix to investigate the mechanical performance of the nanocomposites and the distribution of MWCNTs in the matrix. When the liquid-like MWCNT derivative content was up to 1 wt %, the flexural strength and impact toughness of composites were 12.1 and 124% higher than the pure epoxy matrix, respectively. Transmission electron microscope (TEM) confirmed the very good dispersion of the liquid-like MWCNT derivative in epoxy matrix.

• 出版日期2013-11-5
• 单位西北工业大学