The properties of (50/50 wt%) styrene butadiene rubber/epoxidized (50%) natural rubber (SBR/ENR50) blends containing nanoclay (NC, 5 or 10phr) without and with carbon black (CB 20phr) cured by sulfur or by electron beam (EB) irradiation (50 and 100kGy), were compared. A sulfur cured compound containing 35phr CB was prepared as a reference sample. Dynamic mechanical thermal analysis (DMTA) indicated that the sulfur cured sample containing 10phr NC and 20phr CB and the 100kGy irradiated sample with 5phr NC and 20phr CB had higher crosslink density, storage modulus, and tensile strength, and less loss factor and loss modulus, compared to the reference sample. Scanning electron microscopy (SEM) images of cryo- fractured surfaces confirmed the DMA and crosslink density results. We suggest a light weight 100kGy irradiated sample containing the lowest amount of NC and 20phr CB with a uniform distribution of the –C–C– bonds crosslinks, for high thermal stability applications and also for passenger cars tire treads, for its ice grip and wet skid properties especially for icy and wet roads, with improvements of 23% and 20%, respectively as compared to the reference sample.

（50/50重量％）丁苯橡胶/环氧化（50％）天然橡胶（SBR / ENR50）混合物的特性，该混合物含有不经硫磺硫化或硫化的炭黑（CB 20phr）和不硫化的纳米粘土（NC，5或10phr）比较了电子束（EB）辐射（50和100kGy）。制备包含35phr CB的硫磺硫化化合物作为参考样品。动态机械热分析（DMTA）表明，含10phr NC和20phr CB的硫硫化样品和含5phr NC和20phr CB的100kGy辐照样品具有较高的交联密度，储能模量和拉伸强度，而损耗因子和损耗模量较小，与参考样品相比。冷冻断裂表面的扫描电子显微镜（SEM）图像证实了DMA和交联密度的结果。