Research and Prediction of Wear Resistance of Polymer Composites with Mineral Additives

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL

Journal of Friction and Wear Pub Date : 2023-12-07 DOI:10.3103/S1068366623040074

N. G. Meliksetyan, A. N. Karapetyan, K. V. Hovhannisyan, W. V. Saroyan, S. G. Agbalyan, G. N. Meliksetyan

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Abstract

The main regularities of friction and wear of surface layers of composite materials for antifriction and friction purposes have been established. It has been shown that mineral fillers modified with an organic lubricant (travertine, bentonite, tuff, marble, basalt) have a significant effect on the structure and properties of heterochain polymers based on a copolymer of formaldehyde, polyamides, and polyphenylene oxide. The developed composites are characterized by high wear-resistance (1.43–1.9 times), improved strength properties (1.5–2.0 times), and decreased friction coefficient (1.17–1.4 times) compared to the initial polymer materials that extend the opportunities of their application in modern friction units. The main mechanism of fatigue-delamination high-temperature wear of brake friction composite materials with mineral additives is revealed and based on it a physical model of the surface layer destruction is developed. It was established that the performance of these materials under conditions of high-temperature wear is determined by the stress-strain state of thin surface layers, in which tensile and compressive stresses exceeding the ultimate strength at shear act. At the stage of designing brake devices an analytical method to predict the wear resistance of friction linings was developed.

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含矿物添加剂聚合物复合材料的耐磨性研究与预测

摘要--用于减摩和摩擦目的的复合材料表层摩擦和磨损的主要规律已经确定。研究表明，用有机润滑剂（石灰华、膨润土、凝灰岩、大理石、玄武岩）改性的矿物填料对基于甲醛、聚酰胺和聚苯醚共聚物的异链聚合物的结构和性能有显著影响。与最初的聚合物材料相比，所开发的复合材料具有高耐磨性（1.43-1.9 倍）、更高的强度性能（1.5-2.0 倍）和更低的摩擦系数（1.17-1.4 倍），从而扩大了其在现代摩擦装置中的应用机会。揭示了含有矿物添加剂的制动摩擦复合材料疲劳-分层高温磨损的主要机理，并在此基础上建立了表层破坏的物理模型。研究证实，这些材料在高温磨损条件下的性能取决于薄表层的应力-应变状态，其中的拉应力和压应力超过了剪切时的极限强度。在设计制动装置阶段，开发了一种预测摩擦衬片耐磨性的分析方法。

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来源期刊

Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.