▎ 摘　　要

NOVELTY - A thermoplastic elastomer composition comprises 100 pts. wt. maleic anhydride-grafted polypropylene, 20-60 pts. wt. maleic anhydride-grafted styrene-ethylene-butylene-styrene, 3-15 pts. wt. aramid fiber modified silicon dioxide nanoparticles, 1-10 pts. wt. ammoniated graphene oxide and 70-90 pts. wt. white oil. The aramid fiber modified silicon dioxide nanoparticles are connected with silicon dioxide nanoparticles by silane coupling agent, which is amino silane coupling agent. USE - The thermoplastic elastomer composition is useful in high strength and high density gas mask material (claimed). ADVANTAGE - The thermoplastic elastomer composition has excellent strength and density. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) high strength and high density gas mask material, which comprises thermoplastic elastomer composition; and (2) preparation of high strength and high density gas mask material.