▎ 摘　　要

NOVELTY - Golf ball (10) comprises inner core comprises polybutadiene material, outer core comprises polybutadiene material and graphene masterbatch in amount ranging from 0.1-5.0 wt.% of the outer core, where polybutadiene material comprises 40-90 wt.% polybutadiene, 1-30 wt.% polyisoprene, 10-50 wt.% zinc diacrylate, 1-30 wt.% zinc oxide, 1-20 wt.% zinc stearate, 0.1-10 wt.% peroxide initiator. The graphene masterbatch material comprises graphene in amount from 0.1-80.0 wt.% of the graphene masterbatch material mixed with carrier polymer in amount from 99.9-20 wt.% of the graphene masterbatch material. The outer core has flexural modulus ranging from 80-95 megapascal and cover layer is provided over outer core. The dual core comprises inner core and outer core has compression value ranging from 40-55. USE - Golf ball. ADVANTAGE - The golf ball improves thermal conductivity, and tensile strength. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of golf ball. Golf ball (10) Inner core (12a) Inner mantle (14a) Outer mantle (14b) Cover (16)