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分别采用TPS和SBS制备了高粘度改性沥青和普通SBS改性沥青。研究了两种改性沥青在旋转薄膜烘箱(RTFOT)、压力老化箱(PAV)和紫外光老化前后物理性能的变化。结果表明:TPS改性沥青的抗短期热氧老化和长期热氧老化性能优于SBS改性沥青,同时,TPS改性沥青具有良好的抗紫外光氧老化性能。
TPS and SBS were prepared using high viscosity modified asphalt and ordinary SBS modified asphalt. The changes of physical properties of two kinds of modified asphalt before and after rotating film oven (RTFOT), pressure aging box (PAV) and UV aging were studied. The results show that TPS modified asphalt has better resistance to short-term thermal oxygen aging and long-term thermal oxygen aging than SBS modified asphalt, meanwhile, TPS modified asphalt has good anti-ultraviolet oxygen aging properties.