期刊
TRIBOLOGY INTERNATIONAL
卷 176, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2022.107876
关键词
Water -lubricated bearing; Gradient structure; Polyurethane; Thermal conductivity; Tribological performance
资金
- Na- tional Natural Science Foundation of China [52171319]
This study achieved a gradient structural design for polyurethane by adding high thermal-conductivity wire into water-lubricated bearing material. The results showed that the metal wire effectively transferred heat and reduced sample temperature, and the formed surface film effectively reduced the friction coefficient, thus improving the thermal conductivity and wear resistance of the material.
Polymer materials have poor thermal conductivity and prone to aging at high temperatures. Severe wear occurs at material friction interfaces at high or locally high temperatures. In this study, gradient structural design for polyurethane was realized by adding high thermal-conductivity wire into water-lubricated bearing material. Tribological performance was evaluated by analysis of friction coefficients, wear microscopy, and average temperature during steady-state thermal simulation analysis. The results showed that metal wire effectively transferred heat and reduced sample temperature and the formed surface film effectively reduced the friction coefficient. These findings provided a new method for improving the thermal conductivity and wear resistance of water-lubricated bearing materials. The poor thermal conductivity of polymer bushing and the tribological performance of bearing is improved.
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