Abstract

It was proved that polymer–bitumen binders undergo a structural transformation after the addition of synthetic waxes. UV spectroscopy study showed that wax macromolecules and compounds of the dispersed oil system enter into chemical interactions, which was detected by the disappearance of the absorption band at 260 nm in the UV spectrum of the wax–bitumen blend. This suggested the formation of crosslinked reinforcing spatial structures, which explain the observed improvement in the performance properties of the polymer–bitumen binder after the addition of synthetic waxes: an increase in the softening temperature and brittleness temperature, a decrease in penetration, and an increase in their dynamic viscosity. It was determined that the transformation of the physicochemical characteristics of the polymer–bitumen binder after the addition of wax depends on its chemical nature. Waxes with an aliphatic branched polyethylene structure (Plastobit 430F, Plastowax 200TD, Plastowax 725T, Honeywell Titan 7686) more strongly change the physicochemical characteristics of the polymer–bitumen binder in comparison with waxes of the ProPolymer MA123 and ProPolymer MA-SK-02 brands, which are maleic anhydride–grafted linear polyethylene.

中文翻译：

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通过添加合成蜡来改造分散油系统

摘要

事实证明，聚合物沥青粘合剂在添加合成蜡后会发生结构转变。紫外光谱研究表明，蜡大分子和分散油体系的化合物发生化学相互作用，这是通过蜡-沥青混合物的紫外光谱中 260 nm 吸收带的消失来检测的。这表明形成了交联增强空间结构，这解释了添加合成蜡后观察到的聚合物-沥青粘合剂性能的改善：软化温度和脆化温度提高，针入度降低，渗透率提高。在它们的动态粘度中。据确定，添加蜡后聚合物-沥青粘合剂的物理化学特性的转变取决于其化学性质。与 ProPolymer MA123 和 ProPolymer MA-SK-02 品牌的蜡相比，具有脂肪族支化聚乙烯结构的蜡（Plastobit 430F、Plastowax 200TD、Plastowax 725T、Honeywell Titan 7686）更强烈地改变聚合物沥青粘合剂的物理化学特性，它们是马来酸酐接枝的线性聚乙烯。