Method for preparing polymer and graphene composite material and obtained composite material and base material resin

The invention provides a method for preparing a polymer and graphene composite material and an obtained composite material and base material resin.The method comprises the following steps that a graphite material and a high-molecular polymer are subjected to melt blending and cooling forming, the formed composite material is stretched through stretching equipment, and the deformed composite material is melted, stirred, cooled and formed; the melting and stretching processes are repeated for multiple times, and finally the polymer/graphene composite material is obtained. The method for preparing the polymer/graphene composite material by stripping graphene is simple and easy to operate, and the prepared composite material not only has good processing performance of a high polymer material, but also shows specific high thermal conductivity, high electrical conductivity and excellent mechanical properties of graphene, can be directly used as a material, and can also be used for preparing the polymer/graphene com