炭黑DZ13和白炭黑VN3在高性能轮胎胶料中的应用

The Application of Carbon Black DZ13 and Silica VN3 in the High Performance Tire Compounds

研究了低滞后炭黑DZ13和高分散性白炭黑VN3对NR/SSBR(溶聚丁苯橡胶)硫化胶物理机械性能和动态力学性能的影响。结果表明,与普通炭黑N234相比,低滞后炭黑DZ13和高分散性白炭黑VN3能够大幅度降低轮胎生热;与DZ13相比,VN3硫化胶的储能模量(G′)随填充量增加变化幅度较大,损耗因子(tanδ)比DZ13硫化胶小很多;DZ13硫化胶的Payne效应随用量增加而增加,临界应变也随之减小,而VN3硫化胶的Payne效应比DZ13硫化胶强,临界应变也大得多,而且存在两段G′明显下降的过程,表明VN3形成了一种更强的填料网络;高DZ13用量的硫化胶动态力学性能的温度依赖性不符合交联网络弹性理论,VN3硫化胶动态力学性能的温度依赖性更大。

The effect of the low-hysteresis carbon black DZ13 and high dispersible silica VN3 on the physical and dynamic mechanical properties of NR/SSBR were studied. The results showed that the VN3 and DZ13 can highly decrease the heat build-up in the compounds. Compared with the vulcanizate filled with DZ13, the VN3 filled vulcanizate has a more evident G＇ increase with higher filler content. The tanδ of the VN3 filled vulcanizate was much less than that of the DZ13 filled vulcanizate. The VN3 filled vulcanizate has a stronger Payne effect than the DZ13 filled vulcanizate, and its critical strain was much higher, with two obvious decreases in the strain curve. The above experimental results indicated that a different type of filler network formed in the VN3 filled vulcanizate. The temperature dependence on dynamic mechanical properties of the highly DZ13- filled vulcanizate does not correspond to the elastic theory of cross-linking networks. The dynamic mechanical properties of VN3 filled vulcanizate showed higher temperature dependence.