Abstract
This article is devoted to developing composite tribotechnical materials based on thermoplastic matrices for designs of autotractor units optimized for service life, safety, and ergonomics. Also, the characteristics, parameters, and application of the obtained composite materials are given.
Highlights
Metal plastic bearings are used as guides in single-tube shock absorbers, in which the working layer is a composite material based on polytetrafluoroethylene
The aim of this work was to develop composite tribotechnical materials based on thermoplastic matrices for designs of autotractor units optimized in terms of service life, safety, and ergonomics
The principle of multilevel modification proposed in [6], as well as the deformation model of the sealant developed by Professor Pinchuk L.S. [10] and used in the creation of movable and static seals based on carbon composite materials [9], was used as a methodological approach in their development
Summary
In a wide range of machine-building materials, a special role belongs to polymer composites, which have several significant advantages compared to other types of materials: high specific strength, corrosion resistance, multi-cycle resistance, the processability of processing into products, and the ability to repeatedly recycle.Machine builders are paying increasing attention to new generation materials nanocomposites, which, according to the complex of strain-strength, tribotechnical, thermophysical, protective, and other characteristics, are superior to traditional materials based on high molecular weight matrices.Specific design solutions of automotive units of different functional purposes make it necessary to develop tribotechnical materials that differ in characteristics [1,2,3,4,5,6,7,8]. Antifriction composites designed to manufacture shock absorber piston seals must combine high wear resistance, heat resistance, and stability of the linear thermal expansion coefficient under conditions of exposure to increased temperatures, shock-absorbing liquid, impact loads with reversible movement. Wear of this coupling has the character of fatigue activated by thermal oxidation processes. Metal plastic bearings are used as guides in single-tube shock absorbers, in which the working layer is a composite material based on polytetrafluoroethylene Such bearings are expensive and require special pipe attachment techniques
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