溶聚丁苯橡胶与不同结构顺丁橡胶并用的SiO2/SSBR/BR复合材料性能研究

传统的镍系顺丁橡胶BR9000和四种稀土顺丁橡胶以低并用比（25phr）与SSBR并用时，BR9000与SSBR并用的硫化胶性能与稀土顺丁橡胶并无明显差距，有些性能还要比一些稀土顺丁橡胶更加优良。稀土顺丁橡胶CB24在物理机械性能方面表现出较好的综合性能。具有长链支化结构的稀土顺丁橡胶Nd24EZ具有最高的直角撕裂强度和最低的裂纹扩展速率。具有长链支化结构和高门尼粘度的稀土顺丁橡胶Nd22EZ则具有最佳的滚动阻力和抗湿滑性能。CB24虽然在抗湿滑性能方面表现优良，但其滚动阻力性能在五种顺丁橡胶中是最差的。Nd22EZ与Nd24EZ与白炭黑的相互作用力最强，白炭黑分散最好，表现出最低的佩恩效应。CB24和SKD-NDII则与白炭黑相互作用力较弱，白炭黑分散较差，佩恩效应最强。

Study on properties of SSBR mixed with different structure of butadiene rubber composite materials

When conventional nickel-based butadiene rubber BR9000 and four kinds of ruthenium butadiene rubber are mixed with SSBR at a low combined use ratio (25phr), there is no significant different performance of SiO2/SSBR/BR vulcanizates. And some properties of BR9000 are even better than ruthenium butadiene rubbers. Ruthenium butadiene rubber CB24 shows a good overall performance in terms of physical and mechanical properties. Ruthenium butadiene rubber Nd24EZ with long chain branching structure has the highest right-angled tear strength and the lowest crack growth rate. Ruthenium butadiene rubber Nd22EZ with long chain branching structure and high Mooney viscosity has the best rolling resistance and wet skid resistance. Although CB24 behaves well in wet skid resistance performance, its rolling resistance performance is the worst among the five butadiene rubbers. Nd22EZ and Nd24EZ have the strongest interaction with silica, in which silica disperses well, and also show weaker Payne effect. CB24 and SKD-NDII have weaker interaction with silica, and show stronger Payne effect.