▎ 摘　　要

NOVELTY - Thermoplastic inner tube material with high gas barrier property comprises 100 pts. wt. butyl rubber, 30-90 pts. wt. polypropylene, 0.1-1 pts. wt. antioxidant, 3.7-13 pts. wt. vulcanization system, 5-30 pts. wt. butyl rubber plasticizer, 2-15 pts. wt. polypropylene plasticizer, 10-30 pts. wt. plastic with high barrier property, 5-40 pts. wt. sheet filler and 1-5 pts. wt. compatibilizer. USE - The thermoplastic inner tube material with high gas barrier property is useful in pneumatic tires (claimed), and also useful in automobile, electronic, electric, construction engineering, machinery, medicine and daily living goods. ADVANTAGE - The thermoplastic inner tube material has low hardness, good comprehensive performance, good physical mechanical property, flexible property, high gas barrier property, and high temperature resistance, The method reduces vulcanizing agent dosage, saves cost, and reduces resource consumption. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing thermoplastic inner tube material with high gas barrier properties, comprising (1) mixing polypropylene and butyl rubber at 180-200℃, adding antioxidant and polypropylene plasticizer, cooling to room temperature to obtain rubber-plastic premix A, (2) adding vulcanizing system and butyl rubber plasticizer, and uniformly mixing to obtain rubber-plastic premix B, (3) vulcanizing the rubber-plastic premixture B to obtain the butyl rubber polypropylene thermoplastic vulcanizates, and (4) granulating the butyl rubber polypropylene thermoplastic vulcanizate with sheet barrier filler, high-barrier performance plastic and compatibilizer, uniformly mixing, extruding and granulating to obtain high-gas barrier thermoplastic inner tube material.