Inorganic Nanoparticles Automotive Rubber Timing Belt Performance

In order to improve the actual life of automobile rubber synchronous belt, different inorganic nanoparticles (SiO2, TiO2, Al2O3 and MgO) were used as reinforcing fillers of neoprene; combination system which included different fillers were adopted; inorganic nanoparticles modified by coupling were input and technical conditions were adjusted. Finally the optimal recipe of nanomaterials reinforced rubber and its corresponding technical parameters were obtained.The physical and chemical characters of inorganic nanoparticles were measured, and the influence on the reinforcement of rubber was analyzed in macrocosmic and microcosmic aspects. The effects of different fillers on the properties of vulcanizates were also studied.In order to settle the dispersing problem of inorganic nanoparticles, nanoparticles modified by coupling were added into the rubber by means of fusing powder mixing method. Rubber-particle interaction in macrocosmic and microcosmic aspects was analyzed and the influence of technical condition was speculated.Experiments and researches indicated that the optimized combination system, in which nanosilica (coupling modified) was main component and nanotitania was adjunct component, can be added into rubber synchronous belt as reinforcing fillers. The fatigue resistance of the vulcanizates increased by 1.32 times and the abrasion decreased by 10%. In the meantime other properties were also improved.