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Abstract：
Composites based on powdered single-component epoxy matrix are an alternative technological solution for composites produced using liquid epoxy resins. This article describes in detail the process of producing graphite-reinforced composites for tribological applications. The advantages and disadvantages of technological processes where the matrix is a single-component epoxy powder were demonstrated, and the properties of the obtained materials were examined. A series of composite materials with the graphite filler with sizes below 10 μm and below 45 μm and weight additions of 5, 10, 20, 30% were produced. Mechanical tests and tribological tests conducted with the pin-on-block method were performed, and the mechanism of tribological wear was described. The conducted research allowed us to conclude that the incorporation of graphite, regardless of particle size, above 10% by weight results in a significant reduction in the friction coefficient (approximately 40-50% lower than in unfilled epoxy resin), which is beneficial in the production of cheap self-lubricating materials.
摘要：
基于粉末状单组分环氧基质的复合材料是使用液体环氧树脂生产的复合材料的替代技术解决方案。本文详细描述了用于摩擦学应用的石墨增强复合材料的生产过程。证明了基体为单组分环氧粉末的工艺过程的优缺点，并检查了所得材料的性能。制备了一系列具有尺寸小于10μm和小于45μm的石墨填料和重量添加量为5、10、20、30%的复合材料。进行了机械测试和摩擦学测试，用针块法进行，并阐述了摩擦磨损的机理。进行的研究使我们得出结论，石墨的掺入，不管颗粒大小，高于10重量%导致摩擦系数显著降低(比未填充环氧树脂低约40-50%),有利于生产廉价的自润滑材料。
