硅烷偶联剂/月桂酸复合改性白炭黑对溶聚丁苯橡胶复合材料性能的影响

Effect of silica co-modified by silane coupling agent/lauric acid on properties of solution-polymerized styrene-butadiene rubber composites

使用硅烷偶联剂-氨丙基三乙氧硅烷(APTES)和月桂酸(LA)对白炭黑进行了复合改性,制备了复合改性白炭黑/溶聚丁苯橡胶(SSBR)复合材料,研究了APTES和LA复合改性白炭黑对复合材料硫化特性、力学性能、抗湿滑性能和滚动阻力的影响。结果表明,经复合改性后,白炭黑在30~200℃之间的失重降低54%,团聚现象明显改善;复合改性白炭黑/SSBR复合材料的工艺正硫化时间为20.45min,拉伸强度达到18.8MPa,0℃和60℃的损耗因子分别为0.6788和0.1003。

Silica was co-modified by silane coupling agentγ-aminopropyl triethoxysilane(APTES)and lauric acid(LA),the co-modified silica/solution-polymerized styrene-butadiene rubber(SSBR)composite was prepared,and the effects of co-modified silica by APTES and LA on curing characteristics,mechanical properties,wet skid resistance,and rolling resistance of SSBR composites were studied.The results showed that the mass loss of silica between 30℃ and 200℃ decreased by 54%,and the agglomeration was significantly improved after the co-modification.The optimum curing time of co-modified silica/SSBR composite was 20.45 min,tensile strength reached 18.8 MPa,and loss factors at 0℃ and 60℃ were 0.6788 and 0.1003,respectively.