GRAPHENE-POLYANILINE MODIFIED CARBON NANOTUBE COMPOSITE AND PREPARATION METHOD THEREFOR

摘要

Disclosed are a graphene-polyaniline modified carbon nanotube composite and a preparation method therefor. Graphite oxide is dispersed in deionized water, a hydrochloric acid doped polyaniline modified carbon nanotube is added, and a reactant is filtered, washed and dried to acquire a graphene-polyaniline modified carbon nanotube composite. Modified carbon nanotubes are interspersed among graphene sheets and thus the connection among the sheets is isolated, and the problem that graphene is easily stacked is solved. By coating grapheme with the modified carbon nanotube by means of a physical method, the excellent electrical performance of graphene is maintained and the π electron delocalization of the graphene conjugated planes is not hindered. By adding the composite into a polymer, the dielectric constant can be effectively increased, the electric conductance loss caused by the mutual contact among the graphene sheets is significantly decreased, and the preparation method has obvious advantages in the preparation of a composite material having both high dielectric constant and low dielectric loss. The preparation method for the composite has the characteristics of short period, simplicity in process and environmental friendliness.