Dispersion and reinforcing mechanism of carbon nanotubes in epoxy nanocomposites

Bulletin of Materials Science

关键词: Carbon nanotubes;    epoxy;    flexural modulus;    electrical conductivity;    glass transition temperature.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Carbon nanotube based epoxy composites have been fabricated at room temperature and refrigeration process using sonication principle. Flexural moduli, electrical conductivity, glass transition temperature of epoxy resin as well as nanocomposite samples have been determined. Distribution behaviour of carbon nanotubes in the epoxy matrix was examined through scanning electron microscopy. Composite samples showed better properties than resin samples due to strengthening effect of the filled nanotubes. Refrigerated nanocomposites obtained increasing mechanical property because of better dispersion due to low temperature settlement of polymers. Improvement of electrical conductivity was due to the fact that aggregated phases form a conductive three-dimensional network throughout the whole sample. The increasing glass transition temperature was indicative of restricting movement of polymer chains that ascribe strong interaction presented between carbon nanotubes and epoxy chains that was again supplemented by Raman study and SEM.

【 授权许可】

CC BY