天然橡胶/反式1,4-聚异戊二烯并用比对轨道隔震垫阻尼层胶料性能的影响  

Effect of NR/TPI Blend Ratio on Properties of Damping Layer for Track Vibration Reduction Mat

作　　者：吴结义 李晓晓[1] 吴明生[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《橡胶工业》2016年第7期417-420,共4页China Rubber Industry

摘　　要：研究天然橡胶(NR)/反式1,4-聚异戊二烯(TPI)并用比对轨道隔震垫阻尼层性能的影响。结果表明:随TPI用量的增大,胶料的t_(90)增大,硫化时间延长;硫化胶的压缩疲劳温升和压缩永久变形减小,静刚度逐渐增大。当NR/TPI并用比为95/5时,硫化胶在保持物理性能和耐老化性能的基础上提高了屈挠疲劳寿命,且对降低隔震垫的疲劳静刚度损失率效果最佳。The effect of NR/TPI blend ratio on the properties of damping layer for track vibration isolation mat was investigated. The results showed that the t_（90） of the rubber compound was increased and the cure time was extended with the increasing of addition level of TPI,the temperature rise in compression flexometer testing and permanent deformation were decreased,and the static stiffness was increased. When the blend ratio of NR/TPI was 95/5,the rubber compound had better resistance to flex fatigue in the absence of any significant change in physical properties and good aging resistance,and the rubber compound showed the best effect on reducing static stiffness loss after fatiguing.

关 键 词：隔震垫 天然橡胶 反式1 4-聚异戊二烯 动态疲劳性能 静刚度 

分 类 号：TQ336.42[化学工程—橡胶工业]