Browsing by Author "Boiko, Yulia"

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    Polymer-Composites Based on Aromatic Polyamide and Aramid Fiber for Heavy-Duty Friction and Sealing Units
    (Scientific-Technical Journal CHEMISTRY & CHEMICAL TECHNOLOGY, 2025) Kabat, Oleh S.; Boiko, Yulia
    ENG: The paper substantiates the selection of a polymer and filler based on aromatic polyamide to create a material of friction pairs that operate in heavy-duty friction and sealing units of up-to-date vehicles and machinery. The effect of load and sliding speed on the tribological behavior of the initial aromatic polyamide and filled 15 %-aramid fiber was studied. As a result of tribo-logical studies, the terminal operating conditions of products made of initial aromatic polyamide and a composite based thereon, filled with aramid fiber, have been determined. The basic physical and mechanical properties of the materials under study have been deter- mined, and it is established that the introduction of aramid fiber into the aromatic polyamide contributes to a 10–15 % reduction in the level of the properties thereof due tothe occurrence of micro- and macrodefects of its structure.