期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
卷 50, 期 7, 页码 1325-1337出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00222348.2010.516154
关键词
HDPE; hydroxyapatite nanorod; mechanical properties; transfer film; wear
资金
- Research Grants Council of Hong Kong, Hong Kong Special Administrative Region, China [CityU 120808]
High-density polyethylene (HDPE) nanocomposites reinforced with hydroxyapatite nanorods (nHA) were fabricated by means of extrusion and injection molding. The thermal, mechanical, and dry sliding wear properties of HDPE-based nanocomposites filled with nHA loadings up to 20 wt% were investigated. The results of mechanical property characterization showed that nHA additions improved the hardness, elastic modulus, and yield strength of HDPE at the expense of its tensile ductility and impact strength. Thermogravimetric analysis and heat deflection temperature measurements revealed that nHA fillers are very effective to enhance the thermal stability of HDPE. The wear behavior of HDPE/nHA nanocomposites was studied using a pin-on-disk tribometer. nHA fillers of a large aspect ratio improved the wear resistance of HDPE substantially because of their load-bearing effect and the formation of a continuous transfer film on the steel counterface.
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