Effect of multi-walled carbon nanotube aspect ratio on mechanical and electrical properties of epoxy-based nanocomposites

Autor:	Majid R. Ayatollahi, M. Chitsazzadeh, Mahmood M. Shokrieh, S. Shadlou
Rok vydání:	2011
Předmět:	Nanocomposite Materials science Polymers and Plastics Organic Chemistry Concentration effect Percolation threshold Carbon nanotube Epoxy law.invention law Electrical resistivity and conductivity visual_art Surface roughness visual_art.visual_art_medium Composite material
Zdroj:	Polymer Testing. 30:548-556
ISSN:	0142-9418
DOI:	10.1016/j.polymertesting.2011.04.008
Popis:	The effects of the aspect ratio of multi-walled carbon nanotube (MWNT) on the mechanical and electrical properties of epoxy/MWNT nanocomposites were studied. It was found that the MWNT aspect ratio has a significant effect on both electrical and mechanical properties of nanocomposites with significantly better properties for MWNTs of smaller diameter. The trend of the results was justified based on the mechanisms involved. A new percolation threshold concept was also introduced based on the aspect ratio of MWNTs. In addition, a correction factor for the Halpin–Tsai model was proposed which could greatly improve the theoretical predictions. The states of MWNT dispersion, bridging structure and fracture surface roughness were also investigated and a correlation was found between these features and the experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fcc9242a9f6f8aad4550a5b747ccdd2c https://doi.org/10.1016/j.polymertesting.2011.04.008 Zobrazit plný text záznamu Full Text from ScienceDirect