文献类型：期刊文献

英文题名：Influence of Density on Properties of Compressed Weeping Willow (Salix babylonica) Wood Panels

作者：Li, Neng[1,2,3,4] Bao, Minzhen[1] Chen, Yuhe[3,4] Zhang, Yamei[1] Bao, Yongjie[1,3,4] Yu, Wenji[1,3]

第一作者：Li, Neng

通信作者：Yu, WJ[1];Yu, WJ[2]|[a000591741d8e31bf9dc8]于文吉;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Beijing Forestry Univ, Dept Wood Sci & Technol, Beijing, Peoples R China;[3]China Natl Bamboo Res Ctr, Hangzhou, Zhejiang, Peoples R China;[4]Key Lab High Efficient Proc Bamboo Zhejiang Prov, Hangzhou, Zhejiang, Peoples R China

年份：2017

卷号：67

期号：1-2

起止页码：44-49

外文期刊名：FOREST PRODUCTS JOURNAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000401215900006)】；

基金：This work was supported by the Special Public Welfare Forestry Industry Research Project under grants 201404503 and 201404505 and the Science and Technology Planned Projects of Zhejiang Province under grants 2016F50006 and 2015F50054.

语种：英文

外文关键词：Cellular automata - Contact angle - Scanning electron microscopy - Swelling - Water absorption - Wetting

摘要：Compressed wood panels (CWP) is a biomaterial that can potentially address common issues with fast-growing wood, including low density, high perishability, and low mechanical strength. As wood density is known to significantly affect material properties, this study examines the cellular structure, wettability, physicomechanical performance, water absorption (WA), and dimensional stability of compressed weeping willow wood panels (CWWWP) at various densities. The cellular structure was investigated by a scanning electron microscope, and major physicomechanical properties were also measured, i.e., modulus of rupture, modulus of elasticity, and horizontal shear strength. Contact angle measurements and surface free energy (SFE) calculations were used to elucidate CWWWP wettability. The experimental results showed that the cellular deformation, composite strength, and volume-swelling efficiency all tended to increase with increasing density. However, both the SFE and WA were negatively correlated with the CWWWP density. This study concludes that higher-density CWWWP, with better mechanical performance and lower WA, is suitable for structural wood products and engineering materials, whereas lower-density CWWWP is suited for use as decorative material because of its lower density and higher SFE, which increases the ease of coating and painting.