环保型溶聚丁苯橡胶/顺丁橡胶并用胶与白炭黑的相互作用研究

探讨了国产环保型溶聚丁苯橡胶SSBR2564S和端基硅偶联SSBR72612S在半钢子午胎胎面胶中的应用,研究了两种SSBR与BR并用对白炭黑分散性的影响,并进一步考查了各并用体系混炼胶和硫化胶的基本性能。结果表明：BR与白炭黑的相互作用较SSBR要弱,SSBR更利于白炭黑的分散,端基硅偶联SSBR与白炭黑的相互作用更强；BR能有效缩短并用胶的硫化时间,改善SSBR72612S的加工性能；随BR并用量的增加,硫化胶的耐磨性得到明显改善,断裂伸长率、撕裂强度和回弹均有所提升,而300%定伸应力降低。BR能降低SSBR2564S体系的滚动阻力,但使两种SSBR体系的抗湿滑性损失较大。

Study on Interaction between Environmental Friendly SSBR/BR Blend and Silica

The application of Domestic environment - friendly SSBR2564S and silicone coupling SSBR72612S in semi-steel radial tire tread compound was discussed. The effects of BR on the dispersion of silica in rubber matrix and the interaction between filler and rubber were studied. Furthermore, the basic properties of compounds and the mechanical properties of vulcanizates were also investigated. The results showed that the interaction between BR and silica is weaker than that of SSBR, SSBR is better for dispersion of silica, and the interaction between silica and silicone coupling SSBR72612S is stronger than that of SSBR2564S; BR can shorten the vulcanization time , And the processability of SSBR72612S was improved with a suitable amount of BR. With the increase of BR content, the abrasion resistance of vulcanized rubber was improved obviously, the elongation at break, tear strength and rebound were improved, while the 300% modulus was decreased. BR can reduce the rolling resistance of SSBR2564S system, but the Wet skid resistance of the two kinds of SSBR system was also reduced.