In this study, three chemically similar but morphologically different high melting hydrocarbon waxes having similar DSC peak melting temperatures were analysed, and the influence of their molecular architectures on hot melt adhesive (HMA) performance, was evaluated. Selected waxes included each of the following types: Fischer Tropsch wax (FT), by-product polyethylene wax (BPPE) and first intention polyethylene wax (FIPE). Both, ethylene-co-vinyl acetate (EVA) and metallocene catalysed polyethylene (mPE) based HMAs were formulated. The high chain linearity of FT wax resulted in faster crystallization and faster adhesive set times as well as higher peel adhesion, shear adhesion and IOPP heat resistance temperatures. Wax viscosities were in direct correlation with resultant HMA viscosities. EVA HMAs had longer set times and were more prone to thermal degradation upon prolonged exposure to elevated temperatures and was most pronounced for FIPE wax. Average traction force was dependent on the open time and wax/polymer combination with FT showing a smaller open time window for both EVA and mPE based HMAs.

在这项研究中，分析了三种化学相似但形态不同的具有相似 DSC 峰值熔化温度的高熔点烃蜡，并评估了它们的分子结构对热熔胶 (HMA) 性能的影响。选定的蜡包括以下每种类型：费托蜡 (FT)、副产品聚乙烯蜡 (BPPE) 和第一意图聚乙烯蜡 (FIPE)。配制了基于乙烯-共-乙酸乙烯酯 (EVA) 和茂金属催化聚乙烯 (mPE) 的 HMA。FT 蜡的高链线性导致更快的结晶和更快的粘合剂凝固时间以及更高的剥离粘合力、剪切粘合力和 IOPP 耐热温度。蜡粘度与所得的 HMA 粘度直接相关。EVA HMAs 具有更长的凝固时间，并且在长时间暴露在高温下时更容易发生热降解，对于 FIPE 蜡最为明显。平均牵引力取决于开放时间和蜡/聚合物与 FT 的组合，显示出基于 EVA 和 mPE 的 HMAs 的开放时间窗口较小。