Abstract High-quality asphalt with a composite modifier is necessary for the high-grade pavement to meet the requirements. In this study, nano-organic palygorskite (O-PAL) was successfully prepared by acid activation and silane modification. O-PAL, together with styrene-butadiene-styrene block copolymer (SBS) modified asphalt, was prepared by melt blending. O-PAL composite SBS modified asphalt can form a multi-phase homogeneous system with a spinodal strengthened structure, which can improve the properties of asphalt. 3 wt% O-PAL composite SBS modified asphalt showed excellent water stability; and the critical temperature of the modified asphalt increased up to 40% by adding O-PAL. O-PAL can not only reduce the aging of the asphalt matrix but also reduce the thermal decomposition oxidation of linear SBS. The anti-aging and storage stability performance of the composite modified asphalt is also improved by the addition of O-Pal. O-PAL and SBS are quite a good combination for modified asphalt in high-temperature and humid areas.

中文翻译：

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纳米有机坡缕石和线性SBS在复合改性沥青上的流变和粘附性能

摘要 要满足高等级路面的要求，必须使用复合改性剂的优质沥青。本研究通过酸活化和硅烷改性成功制备了纳米有机坡缕石（O-PAL）。O-PAL 与苯乙烯-丁二烯-苯乙烯嵌段共聚物 (SBS) 改性沥青一起通过熔融共混制备。O-PAL复合SBS改性沥青可以形成具有旋节线强化结构的多相均质体系，可以改善沥青的性能。3 wt% O-PAL复合SBS改性沥青表现出优异的水稳定性；加入O-PAL后，改性沥青的临界温度提高了40%。O-PAL不仅可以减少沥青基体的老化，而且可以减少线性SBS的热分解氧化。O-Pal的加入还提高了复合改性沥青的抗老化和储存稳定性能。O-PAL和SBS是高温潮湿地区改性沥青的很好组合。