NR/NBR/环氧化天然橡胶共混物的动态力学性能

研究了对叔丁基酚醛树脂用量对NR/NBR/环氧化天然橡胶(ENR)共混物动态力学性能的影响。加对叔丁基酚醛树脂的NR/NBR/ENR共混物有2个动态力学损耗峰(分别对应共混物的玻璃化转变温度T_g1和T_g2)。随着对叔丁基酚醛树脂用量(0～15份)增大，共混物的T_g1基本不变，T_g2则逐渐升高；温度为T_g1的共混物损耗因子(tanδ)峰值变化不大，温度为T_g2的共混物tanδ峰值则逐渐增大。通过调节对叔丁基酚醛树脂用量可以改变共混物在0和65 ℃附近的tanδ值，从而获得抗湿滑性能好、滚动损失小的新型胎面材料。;The influence of the p-tert-butyl phenolic resin level on the dynamic properties of NR/NBR/ENR blend was investigated.The NR/NBR/ENR blend had two dynamic loss peaks (corresponding to T_g1 and T_g2 of blend respectively).T_g1 of the blend changed little，but T_g2 increased gradually as the level of p-tert-butyl phenolic resin increased (from 0 to 15 phr)；the peak tanδ of the blend at T_g1 changed little，but the peak tanδ of the blend at T_g2 increased gradually.the tanδ values of the blend at 0 and 65 ℃ could be changed by adjusting the level of p-tert-buty l phenolic resin to obtain a new type of tread compound with good wet traction and low rolling resistance