| abstract |
The invention discloses a preparation method of graphene-modified polypropylene masterbatch. The method fully mixes an aqueous polypropylene wax emulsion and a graphene oxide aqueous solution in water, and then in-situ reduction makes graphene uniformly dispersed in a polypropylene matrix , and then demulsification to obtain the polypropylene/graphene primary masterbatch, and then melt blending and granulating the polypropylene/graphene primary masterbatch and polypropylene to further improve the dispersibility of graphene in the polypropylene matrix to obtain graphite Graphene-modified polypropylene masterbatch with good dispersion. The graphene-modified polypropylene masterbatch prepared by the method has good dispersion of graphene, does not need to use a large amount of organic solvent, and is suitable for large-scale industrial production. |