废轮胎胶粉塑化改性的研究

采用胶粉塑化装置改性废轮胎精细胶粉，对比研究精细胶粉和塑化改性胶粉的粒子形态及填充天然橡胶（NR）胶料的性能。结果表明：与精细胶粉相比，塑化改性胶粉粒径较均一，表面粗糙度增加；与精细胶粉填充NR胶料相比，塑化改性胶粉填充NR胶料的门尼粘度、转矩、硬度和300%定伸应力减小，拉伸强度、拉断伸长率、撕裂强度和回弹值增大，耐磨性能、耐老化性能和耐屈挠性能提高。;The fine tire rubber powder was modified via plasticization and the particle structure of rubber powder was studied. The properties of NR compound filled with the original and modified rubber powder were comparatively investigated.The results showed that，compared with fine rubber powder，the particle size of modified rubber powder was more uniform，and surface roughness increased.Compared with original rubber powder filled NR compound，the Mooney viscosity，torque，hardness and 300% modulus of modified rubber powder filled NR vulcanizate were decreased，the tensile strength，elongation at break，tear strength and resilience were increased，and the wear resistance，anti-aging properties and flexing resistance were improved