Effects of rare earth oxide additive on surface and tribological properties of polyimide composites
| Autor: | Stefan H. J. Idziak, Zihe Pan, Li Chen, Boxin Zhao, Tianchang Wang, Zhaohui Huang |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Friction force Rare earth Oxide General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry Tribology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surface energy 0104 chemical sciences Surfaces Coatings and Films Layered structure chemistry.chemical_compound chemistry Surface roughness Composite material 0210 nano-technology Polyimide |
| Zdroj: | Applied Surface Science. 416:536-546 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.04.172 |
| Popis: | Rare earth oxide La2O3 microparticles-reinforced polyimide (PI) composites (La-PI-Cs) were fabricated, aiming to improve the tribological property of PI. Surface roughness, surface composition, bulk structure, friction force (Ff) and coefficient of friction (COF) at macro/micro preload, and anti-wear performances of La-PI-Cs were studied and compared with neat PI. With La2O3 microparticles, La-PI-Cs showed larger surface roughness, lower surface energy, and higher hydrophobicity than neat PI, and displayed beneficial layered structure different from the compact structure of PI. Owing to these advantages, La-PI-Cs were found to show a 70% reduction in Ff and COF, and a 30% reduction in wear rate, indicating significantly lowered friction and enhanced anti-wear properties after adding La2O3 microparticles. Our research findings demonstrated an easy and low cost method to fabricate polymer composites with low friction and high wear resistance, and help meet the demanding of polymer composites with high tribological performances in broaden applications. |
| Databáze: | OpenAIRE |
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