白炭黑填充的环氧化天然橡胶性能研究

Study on Properties of Silica-reinforced ENR

研究了白炭黑用量对环氧化天然橡胶（ＥＮＲ）流变性能、弹性记忆、硫化特性、平衡应力－应变及动态力学性能的影响。试验结果表明：白炭黑填充的ＥＮＲ属非牛顿型流体；随着白炭黑用量增加，挤出膨胀减小，硫化速度加快，滞后增大；随着剪切速率增大，挤出膨胀增大。透射电镜照片表明硅烷偶联剂使白炭黑在ＥＮＲ中的分散性明显提高。

The influence of silica level on the rheology, elastic memory, curing behaviour, equillbrium stress-strain and dynamic mechanical properties of silica-reinforced ENR was studied.The test result showed that silica-reinforced ENR was a non-Newtonian fluid; the extrusion swelling decreased, the vulcanization rate and the hysteresis loss increased as the level of silica increased; the extrusion swelling increased as the shear rate increased. It was indicated with TEM that the dispersion of silica in ENR compound improved significantly when a silane coupling agent was added into the compound.