环保增塑剂在SSBR/BR/NR共混胶配方中的应用

Application of environmentally friendly plasticizers in SSBR/BR/NR formulations

溶聚丁苯橡胶(SSBR)和白炭黑配方体系可以使轮胎具备较低的滚动阻力和较高的抗湿滑性能,但配方中通常使用芳烃油等传统增塑剂。由于其含有致癌的苯环将会严重危害人体健康和环境,本研究选用油酸钾作为绿色环保的增塑剂,探究油酸钾取代芳烃油对SSBR/顺丁橡胶(BR)/天然橡胶(NR)复合材料门尼黏度、硫化特性、力学性能、防老化性能、动态机械性能以及Payne效应的影响。结果表明,与原配方相比,当使用3份(质量份,下同)油酸钾替换7.5份芳烃油时,Payne效应最弱,门尼黏度降低6%;抗张积系数和老化系数提升了5%和8%;胶料的可加工性能、填料的分散等级、抗湿滑性能与滚动阻力均达到最佳,同时实现节能环保、降低成本。

Solvent-polymerized styrene-butadiene rubber and silica formulations can provide tires with lower rolling resistance and higher wet skid resistance,but traditional plasticizers such as aromatic oils are containing carcinogenic benzene rings usually used in the formulation,which will seriously endanger human health and the environment.In this study,potassium oleate was selected as an environmentally friendly plasticizer to explore the effects of potassium oleate replacing aromatic oil on the Mooney viscosity,vulcanization properties,mechanical properties,anti-aging properties,dynamic mechanical properties and Payne effect of SSBR/BR/NR composites.The results showed that the Payne effect was the weakest and the Mooney viscosity was reduced by 6%;tensile product coefficient and aging coefficient increased by 5%and 8%;the processability of the rubber compound,the dispersion grade of the filler,the wet skid resistance and the rolling resistance were all optimal,and energy saving,environmental protection and cost reduction were realized simultaneausly.