振动诱导动态全硫化热塑性硫化橡胶的性能及微观结构分析

在开发设计的振动诱导动态全硫化实验装置上，对热塑性硫化橡胶(TPV)的性能与微观形态进行了测试与分析。实验结果表明：随着振动频率或振动振幅的增加，TPV的拉伸强度、100％定伸应力和扯断伸长率在一定范围内得到不同程度的提高，邵氏A型硬度减小；TPV的拉伸强度、100％定伸应力和邵氏A型硬度随着橡塑质量比的增加而减小，扯断伸长率则相反，动态条件下制备的TPV力学性能比稳态时的好；振动力场强化作用使得橡胶相平均粒径减小，在塑料基体中的分散均匀性提高，形成热塑性互穿网络结构，两相界面较模糊，非晶区相容性较好。通过对振动参数的合理选择，可以在较大范围内获得综合性能优异的TPV制品。

Property and Micromorphology of Dynamically Full Vulcanized Thermoplastic Vulcanite under Vibrational Induction

The experimental equipment of vibrational induction for dynamically full vulcanization was designed and used to measure and analyze the property and micromorphology of thermoplastic vulcanite(TPV).The experimental results show tensile strength,tensile stress at 100% and elongation at break of TPV are increased within certain range with the increasing of vibrational frequency or amplitude,but Shore A hardness is reduced.With the increasing of ratio of rubber and plastics,tensile strength,tensile stress at 100% and Shore A hardness of TPV are reduced,but elongation at break is increased.Mechanical property of TPV which is processed under dynamic condition is better than that of steady condition.Rubber particle average dimension is reduced under vibration force field and it is distributed in plastics matrix more even.Thermoplastic interpenetrating network structure is formed,two-phase interface becomes more vague and miscibility of amorphous region is better.Through reasonable selection of vibrational parameter,TPV product which is of good comprehensive property can be obtained within a wide range.