On the sliding wear of nanoparticle filled polyamide 66 composites |
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Authors: | L Chang Z Zhang H Zhang AK Schlarb |
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Affiliation: | aInstitute for Composite Materials, University of Kaiserslautern, 67663 Kaiserslautern, Germany bNational Center for Nanoscience and Technology, 100080 Beijing, China |
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Abstract: | The tribological properties of polyamide 66 (PA66) composites, filled with TiO2 nanoparticles, short carbon fibres, and graphite flakes, were investigated. Sliding tests were performed on a pin-on-disk apparatus under different contact pressures, p, and sliding velocities, v. It was found that nano-TiO2 could effectively reduce the frictional coefficient and wear rate, especially under higher pv (the product of p and v) conditions. In order to further understand the wear mechanisms, the worn surfaces were examined by scanning electron microscopy and atomic force microscopy. A positive rolling effect of the nanoparticles between the material pairs was proposed which contributes to the remarkable improvement of the load carrying capacity of polymer nanocomposites. |
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Keywords: | Polymer nanocomposites Polyamide 66 TiO2 nanoparticle Short carbon fibre Graphite flake Wear Friction |
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