白炭黑对再生顺丁橡胶／聚烯烃弹性体热塑性硫化胶性能的影响

采用动态硫化技术制备再生顺丁橡胶（RBR）/聚烯烃弹性体（POE）共混型热塑性硫化胶（TPV），研究硫黄硫化体系RBRiPOE TPV的硫化特性、白炭黑对TPV物理性能和动态力学性能的影响。结果表明：RBR/POE TPV在硫黄硫化体系下能够继续硫化；随着白炭黑用量的增大，RBRiPOE TPV的300U定伸应力和拉伸强度增大，拉断伸长率和拉断永久变形减小；偶联剂Si69改性白炭黑补强RBRiPOE TPV的300Y定伸应力、拉伸强度和储能模量与末改性白炭黑补强体系相比明显增大，拉断伸长率和拉断永久变形有所降低。;The reclaimed butadiene rubber （RBR）/polyolefin （POE） thermoplastic vulcanizate（TPV） was prepared by dynamic vulcanization technology，and the curing characteristics of sulfur curing system and the effect of silica on the physical properties and dynamic mechanical properties of RBR/POE TPV were investigated. The results showed that RBR/POE TPV could be further vulcanized with the sulfur curing system. The modulus at 300% elongation and tensile strength of RBR/POE TPV increased as the addition level of silica increased，while the elongation at break and tensile permanent set decreased. Moreover，the modulus at 300% elongation， tensile strength and storage modulus of RBR/POE TPV filled with Si69 modified silica were higher compared with those of RBR/POE TPV filled unmodified silica，respectively，while the elongation at break and tensile permanent setwere lower