混炼外场条件对溶聚丁苯橡胶/天然橡胶胶料性能的影响

研究混炼外场条件对溶聚丁苯橡胶/天然橡胶胶料性能的影响。结果表明：随着转子转速增大，混炼胶的门尼粘度变化不大，FL先增大后减小，Fmax增大，t10缩短，t90变化不大；硫化胶的邵尔A型硬度、拉伸强度和拉断伸长率增大，撕裂强度减小；胶料的Payne效应先增强后减弱。随着初始混炼温度升高，混炼胶的门尼粘度、F_L和F_max增大，t₁₀和t₉₀缩短；硫化胶的300%定伸应力、拉伸强度、拉断伸长率和撕裂强度呈减小趋势；胶料的Payne效应明显增强。;The effect of mixing field conditions on the properties of the SSBR/NR compound was investigated. The results showed that，with the increase of rotor speed，the Mooney viscosity of compound changed little，minimum torque was increased first and then decreased，the maximum torque was increased，the scorch time was shortened，the optimum cure time changed little；the Shore A hardness，tensile strength and elongation at break of vulcanizate were increased，the tear strength was decreased，and the Payne effect of the compound was strengthened first and then weakened. With the increase of initial mixing temperature，the Mooney viscosity，minimum torque and maximum torque of the compound were increased，the scorch time and optimum cure time were shortened，the modulus at 300%，tensile strength，elongation at break and tear strength of vulcanizate decreased in general，and the Payne effect of the compound was significantly enhanced