Abstract—A comparative analysis of the structural, tribological, and mechanical properties of polymer–polymer composites with the optimized composition UHMWPE + 15 wt % HDPE-g-SMA + 15 wt % PP, obtained by FDM (fused deposition modeling) and compressive sintering (hot-pressing) methods has been performed. It is shown that the tribomechanical characteristics (wear resistance, friction coefficient, elasticity modulus, yield limit, strength, elongation at break) of 3D-printed extrudable polymer–polymer UHMWPE composites exceed those of hot-pressed composites due to a more homogeneous supramolecular structure with enlarged crystallinity. Tribotests of extrudable UHMWPE composites in different friction modes (PV) demonstrates their applicability in joints operating in a wide range of loads and sliding rates.

中文翻译：

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3D打印和热压法制备的可挤出聚合物-聚合物UHMWPE复合材料的摩擦学和力学性能比较分析

摘要—通过FDM（熔融沉积建模）和压缩烧结获得的具有最佳组成UHMWPE + 15 wt％HDPE-g-SMA + 15 wt％PP的聚合物-聚合物复合材料的结构，摩擦学和力学性能的比较分析（热压）方法已执行。结果表明，由于更均质的超分子结构，3D打印的可挤出聚合物-聚合物UHMWPE复合材料的摩擦力学特性（耐磨性，摩擦系数，弹性模量，屈服极限，强度，断裂伸长率）超过了热压复合材料。具有更大的结晶度。不同摩擦模式下可挤出UHMWPE复合材料的摩擦试验（PV）展示了它们在各种负载和滑动速率下工作的接头中的适用性。