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Study on the Physical and Rheological Properties of Nylon66/MWCNT Composites  

Kim, Do Eui (Major in Polymer Science and Engineering, Kongju National University)
Kim, Youn Cheol (Major in Polymer Science and Engineering, Kongju National University)
Publication Information
Applied Chemistry for Engineering / v.24, no.2, 2013 , pp. 214-218 More about this Journal
Abstract
Nylon66/multi-walled carbon nano tube (MWCNT) composites were fabricated by twin screw extruder. The contents of MWCNT were 1, 3, 5, and 7 wt%. Thermal properties, dispersion, rheological and impact properties were measured by DSC, TGA, X-ray diffraction (XRD), SEM, Dynamic rheometer, and Izod impact tester. The effect of MWCNT on the non-isothermal crystallization of Nylon66 was confirmed by DSC. The complex viscosity at low frequency and the shear thinning tendency of the composites increased with MWCNT content. An increase in the elasticity was confirmed from the decrease in the slop of G'-G" plot. Izod impact strengths of the composites were analyzed as a measure of mechanical properties, which indicated that the composites exhibit a 60% enhancement for the impact strength when 3 wt% MWCNT was added. The dispersion of MWCNT within Nylon66/MWCNT composites was also checked by SEM.
Keywords
Nylon66; multi-walled carbon nano tube; composite; physical properties; impact strength;
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