期刊
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS
卷 61, 期 11, 页码 882-890出版社
TAYLOR & FRANCIS AS
DOI: 10.1080/00914037.2011.617338
关键词
composites; coupling agent; HDPE; mechanical properties; wood flour
资金
- Weinan Teachers University
In this study, the influence of coupling agent concentration (0 and 3wt%), wood fiber content (50, 60, 70, and 80 wt%), and size (40-60, 80-100, and 160-180 mesh) on the mechanical properties of wood/high-density-polyethylene (HDPE) composites (WPCs) was investigated. WPC samples were prepared with poplar wood-flour, HDPE, and polyethylene maleic anhydride copolymer (MAPE) as coupling agent. It was found that the tensile properties and the flexural properties of the composites were improved by the addition of 3wt% MAPE, and the improved interfacial adhesion was well confirmed by SEM micrographs. It was also observed that the best mechanical properties of wood/HDPE composites can be reached with larger particle size in the range studied, while too-small particle size was adverse for the mechanical properties of wood/HDPE composites. Moreover, the tensile modulus, tensile strength, and flexural strength of WPCs decreased with the increase in fiber content from 50 to 80 wt%; the flexural modulus of WPCs increased with the increase in fiber content from 50 to 70 wt% and then decreased as the fiber content reached 80 wt%. The variances in property performance are helpful for the end-user to choose an appropriate coupling agent (MAPE) concentration, wood fiber content, and particle size based on performance needs and cost considerations.
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