Evaluation of the Performance of PTFE-Composites as Antifriction Layers in Supporting Parts with a Spherical Segment

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL Journal of Friction and Wear Pub Date : 2023-09-25 DOI:10.3103/S1068366623030029

A. A. Adamov, I. E. Keller, D. S. Petukhov, V. S. Kuzminykh, I. M. Patrakov, P. N. Grakovich, I. S. Shilko

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Abstract—

For the primary assessment of the operability of a number of filled polymer composites based on polytetrafluoroethylene (PTFE) as a material of antifriction layers, Brinell hardness, stiffness under free compression up to 10% deformation, stiffness under tight compression up to 160 MPa, friction coefficients and resistance to reverse sliding according to the plane-by-plane scheme of polished austenitic stainless steel were studied at room temperature as a counterbody. Seven types of PTFE-based composites filled with coke, bronze, colloidal graphite, as well as modified carbon fiber with a fluoropolymer coating and various additives (composites of the Superfluvis family) were studied. According to the totality of indicators, the composites of the Superfluvis family are superior to materials filled with coke or bronze, and the material filled with colloidal graphite as the main filler did not pass the tests for resistance to reverse sliding. The performance of the Superfluvis composite based on PTFE PN90 in reverse sliding tests under the pressure of 65 MPa at a distance of 10 000 m has been confirmed.

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PTFE复合材料作为球形节段支撑件减摩层的性能评价

摘要——为了初步评估一些基于聚四氟乙烯（PTFE）作为减摩层材料的填充聚合物复合材料的可操作性，布氏硬度、自由压缩下的刚度高达10%变形、紧密压缩下的硬度高达160MPa，在室温条件下，以抛光奥氏体不锈钢为沉头，按照逐平面方案研究了其摩擦系数和反向滑动阻力。研究了七种填充焦炭、青铜、胶体石墨的PTFE基复合材料，以及带有含氟聚合物涂层和各种添加剂的改性碳纤维（Superfluvis家族的复合材料）。从总体指标来看，Superfluvis家族的复合材料优于填充有焦炭或青铜的材料，并且填充有胶体石墨作为主要填料的材料没有通过抗反向滑动测试。基于PTFE PN90的Superfluvis复合材料在65MPa压力下10 000米已被确认。

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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.