Comprehensive research into the production of a ceramic-reinforced polymer material from highdensity polyethylene or polypropylene and β-Si₃N₄ powder was conducted. The incorporation of silicon nitride ceramic particles (5 and 10 vol.%) into the polymers to make polymer–ceramic filaments was studied step by step. High-quality polypropylene–ceramic filaments could be obtained at an extrusion temperature of 150°C with an extrusion speed of 20 cm/min and polyethylene–ceramic filaments at 160°C and 30 cm/min. Data on the shape and size distribution of Si₃N₄ particles were used to simulate the elementary volume of the filaments to determine the mechanical properties of the composites applying a 2D finite-element model. The reinforcement of the polypropylene/polyethylene-matrix material by 10 vol.% Si₃N₄ particles was not sufficient because the composite elastic modulus increased insignificantly and the critical strain decreased substantially to incorporate a greater volume of hard particles to improve the elastic modulus. To assess the quality of the polymer–ceramic filaments, parts of different shape (washer and auger) from reinforced and unreinforced filaments were designed and printed. The printed polymer–ceramic parts demonstrated a smooth surface and had no ledges or discontinuous areas. The mechanical (Vickers and Brinell hardness) and tribological (volume wear) properties of the materials were examined. Wear tests of the polyethylene–Si₃N₄ composite showed that its wear resistance tended to improve with increasing ceramic content of the filament. The low abrasive wear of the Si₃N₄-reinforced polypropylene/polyethylene material and the behavior of ceramic particles in contact with the indenter indicate that the composite has high fracture resistance in 3D printing.

全面研究从高密度聚乙烯或聚丙烯和β型Si制作的陶瓷增强的聚合物材料的₃ Ñ ₄粉末进行的。逐步研究了将氮化硅陶瓷颗粒（5％和10％（体积））掺入聚合物中制成聚合物-陶瓷长丝的方法。高质量的聚丙烯－陶瓷长丝可以在150°C的挤出温度下以20 cm / min的挤出速度获得，而聚乙烯－陶瓷长丝则可以在160°C和30 cm / min的速率下获得。Si ₃ N ₄的形状和尺寸分布数据使用2D有限元模型，使用颗粒模拟长丝的基本体积，以确定复合材料的机械性能。聚丙烯/聚乙烯基材料通过10％（体积）的Si ₃ N ₄增强颗粒不足，因为复合材料的弹性模量微不足道地增加并且临界应变显着降低，以掺入更大体积的硬质颗粒来改善弹性模量。为了评估聚合物-陶瓷长丝的质量，设计并打印了由增强和非增强长丝制成的不同形状的零件（垫圈和螺旋钻）。印刷的聚合物-陶瓷零件显示出光滑的表面，没有凸耳或不连续的区域。检查了材料的机械性能（维氏和布氏硬度）和摩擦学性能（体积磨损）。聚乙烯–Si ₃ N _4的磨损测试复合材料表明，随着长丝中陶瓷含量的增加，其耐磨性趋于提高。Si ₃ N ₄增强的聚丙烯/聚乙烯材料的低磨料磨损以及与压头接触的陶瓷颗粒的行为表明，该复合材料在3D打印中具有较高的抗断裂性。