Method for manufacturing polyurethane nanocomposite comprising expanded graphite and composition thereof

摘要

Disclosed herein is a method of manufacturing a nanocomposite using expanded graphite. The method is characterized in that monomers are formed into a polymer between the plate-shaped layers of the expanded graphite, and the polymer is intercalated therebetween, so that the plate-shaped layers of the expanded graphite are completely exfoliated or are formed into graphene, with the result that the expanded graphite is completely dispersed in a polymer matrix. The nanocomposite manufactured by this method has excellent electrical conductivity and thermal conductivity because the expanded graphite is uniformly dispersed in this nanocomposite.

主权项

1. A method of manufacturing a nanocomposite, comprising the steps of:
dissolving expanded graphite in an organic solvent to prepare an expanded graphite-dispersed solution; mixing a polyol and a diol with a catalyst and reacting the mixture with a diisocyanate to form a prepolymer; introducing the expanded graphite-dispersed solution into the prepolymer; and introducing a chain extender into the prepolymer.