苯乙烯嵌段共聚物改性沥青光稳定剂配方
苯乙烯嵌段共聚物改性沥青光稳定剂配方

为了改善乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)改性沥青的热储存稳定性,研究基于硫化机理,设计了38种稳定剂配方。通过测试样品48 h离析软化点差、软化点、针入度、延度性能指标的变化,研究各配方下稳定剂对改性沥青热储存稳定性的改善效果,确定新型稳定剂的最佳配方。结果表明:新型直投式稳定剂最佳配方为硫(S)、二硫化四甲基秋兰姆(TMTD)、氧化锌(Zn O)、高岭土质量之比为60∶16∶4∶1 750;该稳定剂可以改善SBS改性沥青的热储存稳定性、有效地提高改性沥青的软化点,对135℃布氏黏度以及针入度均有一定的提升作用。
Last Updated: 2018-11-16
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