Panin Sergey V, Buslovich Dmitry G, Dontsov Yuri V, Bochkareva Svetlana A, Kornienko Lyudmila A, Berto Filippo
Laboratory of Mechanics of Polymer Composite Materials, Institute of Strength Physics and Materials Science SB RAS, 634055 Tomsk, Russia.
Department of Materials Science, Engineering School of Advanced Manufacturing Technologies, National Research Tomsk Polytechnic University, 634030 Tomsk, Russia.
Materials (Basel). 2021 Mar 19;14(6):1515. doi: 10.3390/ma14061515.
The aim of the paper was to improve the functional properties of composites based on ultra-high molecular weight polyethylene (UHMWPE) by loading with reinforcing fibers. It was achieved by designing the optimal composition for its subsequent use as a feedstock for 3D-printing of guides for roller and plate chains, conveyors, etc. As a result, it was experimentally determined that loading UHMWPE with 17% high density polyethylene grafted with VinylTriMethoxySilane (HDPE-g-VTMS) was able to bind 5% glass fillers of different aspect ratios, thereby determining the optimal mechanical and tribological properties of the composites. Further increasing the content of the glass fillers caused a deterioration in their tribological properties due to insufficient adhesion of the extrudable matrix due to the excessive filler loading. A multi-level approach was implemented to design the high-strength anti-friction 'UHMWPE+17%HDPE-g-VTMS+12%PP'-based composites using computer-aided algorithms. This resulted in the determination of the main parameters that provided their predefined mechanical and tribological properties and enabled the assessment of the possible load-speed conditions for their operation in friction units. The uniform distribution of the fillers in the matrix, the pattern of the formed supermolecular structure and, as a consequence, the mechanical and tribological properties of the composites were achieved by optimizing the values of the main control parameters (the number of processing passes in the extruder and the aspect ratio of the glass fillers).
本文的目的是通过添加增强纤维来改善基于超高分子量聚乙烯（UHMWPE）的复合材料的功能特性。通过设计最佳成分来实现这一目标，该成分随后用作3D打印滚子链、板链、输送机等导向装置的原料。结果通过实验确定，用17%接枝乙烯基三甲氧基硅烷的高密度聚乙烯（HDPE-g-VTMS）填充UHMWPE能够结合5%不同长径比的玻璃填料，从而确定复合材料的最佳机械和摩擦学性能。由于填料负载过多导致可挤出基体的附着力不足，进一步增加玻璃填料的含量会导致其摩擦学性能恶化。采用多层次方法，利用计算机辅助算法设计了基于“UHMWPE+17%HDPE-g-VTMS+12%PP”的高强度减摩复合材料。这确定了提供其预定机械和摩擦学性能的主要参数，并能够评估其在摩擦部件中运行时可能的负载速度条件。通过优化主要控制参数（挤出机中的加工道次和玻璃填料的长径比）的值，实现了填料在基体中的均匀分布、形成的超分子结构模式以及复合材料的机械和摩擦学性能。
