Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 210, Issue 2, Pages 293-296Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2009.09.013
Keywords
Surface densification; Heat-treatment; Thickness swelling; Density; Mechanical properties; Aspen
Funding
- Natural Sciences and Engineering Research Council (NSERC) of Canada [311808]
- Natural Resources Canada
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Surface densification technique can be used to enhance mechanical properties of low-density wood at a relative low temperature such as 145 degrees C. However, the final dimensions of densified wood products are not stable when exposed to cyclic weathering. Post-high-temperature heat-treatment could assist in solving this problem through the modification of chemical components in wood. This study examined the interactive effect of surface densification and post-heat-treatment on aspen (Populus tremuloides). Thickness swelling and other selected properties of heat-treated surface densified aspen were compared to untreated aspen. As expected, the heat-treatment significantly improved the dimensional stability of surface densified aspen and reduced the mechanical properties to some degree. However, the mechanical properties of heat-treated densified specimens were still greater than those unheat-treated undensified ones. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
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