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废橡胶轮胎的再生利用是一个全球性问题,将胶粉颗粒制作成为胶粉改性沥青(CRMA)是一种节能而又环保的有效途径。在不同条件下制备CRMA,并进行旋转黏度测试,分析了制备方式、处理温度、胶粉粒径、处理时间以及胶粉掺量对CRMA黏度的影响,并在影响因素分析的基础上建立了CRMA黏度预估模型。结果表明,采用高速搅拌的制备方式,CRMA的黏度(η)与处理温度(T)和胶粉目数(D)都呈二次幂函数关系变化,与胶粉掺量(R)呈指数关系增加,而与搅拌时间的关系不显著;回归分析得到的CRMA黏度预估模型具有较高的拟合精度,可以为CRMA的生产工艺优化提供参考。
The recycling of waste rubber tires is a global problem. The manufacture of rubber powder modified crumb rubber (CRMA) is an energy saving and environmentally friendly effective way. CRMA was prepared under different conditions and tested for rotational viscosity. The effects of preparation method, treatment temperature, particle size, treatment time and the amount of powder on the viscosity of CRMA were analyzed. Based on the analysis of influencing factors, CRMA Viscosity prediction model. The results showed that the viscosity (η), temperature (T) and powder number (D) of CRMA varied in a second order power function by exponential relationship with the content of rubber powder (R) While the relationship with the mixing time is not significant. The CRMA viscosity prediction model obtained by regression analysis has a high fitting accuracy and can provide reference for the optimization of the production process of CRMA.