| Autor: |
Vasilev, Andrey, Struchkova, Tatyana, Lazareva, Nadezhda, Okhlopkova, Aitalina |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3243 Issue 1, p1-7, 7p |
| Abstrakt: |
This paper presents the results of investigation of the effect of carbon fibers with nanosized zirconium dioxide on the mechanical and tribological properties of polytetrafluoroethylene. It is shown that the introduction of binary fillers (carbon fibers with zirconium dioxide) into polytetrafluoroethylene leads to an increase in compression stress by 25-37%, compression elasticity modulus by 24-44% and Shore D hardness by 12-17% compared to the initial polymer. Thermodynamic parameters of polymer composites were investigated by differential scanning calorimetry. It is revealed that the thermodynamic parameters of polymer composites containing binary fillers have increased relative to the polymer matrix and composites containing only carbon fibers. Tribological studies of polymer composites showed an increase in wear resistance by 541-1147 times while maintaining a low coefficient of friction. The study of the friction surface of composites by IR spectroscopy and scanning electron microscopy showed the formation of wear-resistant protective secondary structures on the friction surface, as well as revealed higher structuring of the surface layers of composites with the content of zirconium dioxide. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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