Effects of Functionalization MWCNTs on the Mechanical and Electrical Properties of nylon-6 Composites

Abstract:

Chemically coupling functionalization multi-walled carbon nanotube (MWCNTs)/nylon-6 (PA6) composites were prepared. The nanotubes were first treated by a volume ratio of 3:1 mixture of concentrated H₂SO₄/HNO₃, and then the γ-aminopropyl-triethoxysilane (KH-550) was carried onto the surface of MWCNTs. Effect of MWCNTs coupling treatment on the mechanical and electrical properties of the MWCNTs/PA6 composites were investigated. The impact strength, tensile strength and modulus of p-MWCNTs (coupling process)/PA6 composites increase by 115.9%, 27.2% and 167.7%, respectively, compared with those of the pure nylon-6 resin. A significant increase of the electrical conductivity of the p-MWCNTs/PA6 composites with respect to the original-MWCNTs and a-MWCNTs/PA6 composites due to the increased compatibility with the matrix due to the formation of an inter face with stronger interconnections.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 127-131
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.127
• Online since: August 2013
• Authors: Xiang Dong Zhu*, Qing Jie Jiao, Chong Guang Zang, Xian Peng Cao
• Keywords: Composite, Electrical, Mechanical, MWCNT

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