▎ 摘　　要

NOVELTY - A composite film material comprises vertically aligned carbon nanotube array material uniformly distributed in base material comprising graphene and epoxy resin. The base material is prepared by curing mixture of graphene and epoxy resin at high temperature. The carbon nanotubes are vertical aligned carbon nanotube arrays and gaps between the vertically aligned carbon nanotube arrays of each cluster is filled with matrix material. USE - Composite film material used in thermal interface material. ADVANTAGE - The vertically oriented carbon nanotube array and graphene epoxy resin composite film material effectively improves lateral thermal conductivity of the epoxy substrate for heat dissipation performance of the thermal interface material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for production of composite film material, which involves growing vertically aligned carbon nanotube array using catalyst on silicon wafer, densifying vertically aligned carbon nanotube array on silicon wafer to obtain vertically aligned carbon nanotube array having a densified structure, mixing epoxy resin, curing agent and diluent to form epoxy polymer, mixing graphene and epoxy polymer to obtain composite film substrate, filling composite film substrate into densified vertically aligned carbon nanotube array and filling gap between each cluster of carbon nanotubes, immersing carbon tube array in composite film substrate, leaving still for 2 hours, heating in blast drying oven at high temperature for solidification, encapsulating vertical aligned carbon nanotube array with graphene epoxy substrate, polishing the cured composite film on both sides, peeling off the silicon substrate and removing the excess epoxy graphene substrate on both sides of composite film material.