反式聚环戊烯橡胶在轮胎胎肩胶中的应用研究

对合成的3种不同相对分子质量的反式聚环戊烯橡胶（TPR）用于轮胎胎肩胶进行了研究，结果表明：与使用天然橡胶（NR）及顺丁橡胶（BR）/NR并用胶相比，TPR硫化胶的回弹性、老化性能、耐磨性和低温性能优异，耐疲劳性能好，动态生热低，滚动阻力小，抗湿滑性稍差，拉伸强度和撕裂性能较差；TPR/NR并用硫化胶与NR相比物理性能有所改善，耐老化性、耐磨性和低温性能优异，回弹性、耐疲劳性及动态生热相当，滚动阻力小，有较好的动态力学性能。相对分子质量较低的TPR2具有较佳的综合性能，TPR不适合单独应用于轮胎胎肩胶，其与NR并用具有较好效果。

Incorporation of trans-polycyclopentene rubber in tire shoulder compounds

The incorporation of trans-polycyclopentene rubber (TPR) with three different relative molecular weights in tire shoulder compounds has been studied. The results show that compared with natural rubber (NR) and butadiene rubber/natural rubber (BR/NR), the resilience, wear resistance, aging performance, compressive fatigue property and low temperature property of vulcanized TPR are improved significantly, while the tensile strength and tearing strength decrease. In addition, the rolling resistance is reduced and the wet skid resistance is slightly poorer. The mechanical properties, aging resistance, wear resistance, low temperature performance, dynamic mechanical properties and rolling resistance of vulcanized TPR/NR are improved. TPR2 having a lower relative molecular weight shows better overall properties. TPR is not suitable for tire shoulder rubber alone, but has better performance when used in combination with NR.