COMPOSITE MATERIAL HAVING IMPROVED ELECTRICAL CONDUCTIVITY AND MOLDED ARTICLE CONTAINING SAME

摘要

Provided is a composite produced by processing a resin composition including a thermoplastic resin, carbon nanotubes, and a carbonaceous conductive additive. The carbon nanotubes have an ID/IG of 1.0 or less before the processing. The ratio of residual length of the carbon nanotubes present in the composite is from 40% to 99%. The composite has improved conductivity without deterioration of mechanical properties. Due to these advantages, the composite can be used to manufacture various molded articles.

主权项

1. A composite produced by processing a resin composition comprising a thermoplastic resin, bundle type carbon nanotubes, and a carbonaceous conductive additive wherein the carbon nanotubes have an ID/IG of 1.0 or less, the ID/IG being the ratio of the intensity of D-band peak to that of G-band peak in the Raman spectrum of the carbon nanotubes before the processing, and the ratio of residual length of the carbon nanotubes present in the composite is from 40% to 99%, the ratio of residual length being defined by Equation 1:
Ratio of residual length (%)=(Average length of the carbon nanotubes present in the composite after processing/Average length of the carbon nanotubes before processing)×100   (1)