期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 130, 期 3, 页码 2217-2224出版社
WILEY
DOI: 10.1002/app.39398
关键词
composites; nanotubes; graphene and fullerenes; rheology; viscosity and viscoelasticity; mechanical properties
资金
- National Natural Science Foundation of China [51073129]
- Northwestern Polytechnical University [Z2013164]
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. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2217-2224, 2013
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