This work presents an interesting alternative for improving thermoplastic polyurethane's (TPUs) tribological properties by incorporating styrene-ethylene/butylene-styrene triblock copolymer (SEBS) via melt blending. Two TPUs with different molar masses, two compatibilizers SEBS-g-MA (C1) and SEBS-b-TPU (C2) and paraffinic oil were used in the formulated blends. The raw materials' effect on the morphology, rheology, physical–mechanical and tribological performance of TPU/SEBS blends was monitored. The phase morphology achieved depended on the addition of mineral oil and compatibilizer agent type. The rheological analysis showed a pseudo-liquid viscous behavior for all samples. However, this behavior was related to the compatibilizer type and molar mass of the TPU. No significant changes were observed between the compatibilizers C1 and C2 concerning the physicomechanical properties. The fact that mineral oil is preferentially contained in the SEBS phase is the fundamental point to explain the blends phase morphology and their rheological and physical behaviors. The swollen state SEBS modifies the TPU's performance. It also allows tuning properties such as abrasion and increasing the friction coefficient, enabling promising applications for these thermoplastic elastomers blends.

这项工作提出了一种有趣的替代方案，通过熔融共混掺入苯乙烯-乙烯/丁烯-苯乙烯三嵌段共聚物 (SEBS) 来改善热塑性聚氨酯 (TPU) 的摩擦学性能。两种不同摩尔质量的 TPU，两种增容剂 SEBS- g- MA (C1) 和 SEBS- b-TPU (C2) 和石蜡油用于配制的混合物中。监测原材料对 TPU/SEBS 共混物的形态、流变学、物理机械和摩擦学性能的影响。获得的相形态取决于添加的矿物油和增容剂类型。流变学分析显示所有样品的假液体粘性行为。然而，这种行为与 TPU 的增容剂类型和摩尔质量有关。在物理机械性能方面，在增容剂 C1 和 C2 之间没有观察到显着变化。矿物油优先包含在 SEBS 相中的事实是解释共混物相形态及其流变和物理行为的基本点。膨胀状态的 SEBS 改变了 TPU 的性能。