安徽农业大学学报2011，Vol.38Issue(3)：453-457,5.DOI:CNKI:34-1162/S.20110419.0921.003
化学改性对速生杨木木材力学性能和天然耐久性的影响
Mechanical behavior and natural durability of fast-growing poplar wood modified by chemical treatment
摘要
Abstract
The fast-growing poplar wood was modified with low-molecule phenol-formaldehyde resin (PF),urea-formaldehyde resin (UF) and ammoniacal copper quaternary (ACQ-D) by means of full cell vacuum-pressure method. Mechanical and decay resistance properties of untreated and modified specimen were tested and evaluated. The results showed as follows. The mechanical performance was slightly affected withACQ-D preservative treatment,while the mechanical performance of the specimen modified with PF was significantly improved compared with that of the untreated specimen. modulus of elasticity(MOE), modulus of rupture (MOR),longitudinal compressive strength and longitudinal tensile strength of the specimen modified with PF could increase 97.1, 83.4, 125.5 and 37.0％ separately. Corresponding index values of the specimen modified with UF are 49.4, 10.7, 42.0 and 17.8％. The decay resistance of untreated specimen was poor, and the level decay resistance belonged to Ⅱ. The decay resistance of modified specimen could be improved with PF, UF and ACQ-D.Compared with 18.7％ weight percent loss of untreated specimen, which of the modified specimen with PF was 2.9％. Therefore, modification with PF was synthetically acceptable for enhanced mechanical properties and improved decay resistance.关键词
速生杨木/化学改性/力学性能/防腐性能Key words
fast-growing poplar/ chemical treatment/ mechanical properties/ decay resistance分类
农业科技引用本文复制引用
岳孔,刘伟庆,卢晓宁..化学改性对速生杨木木材力学性能和天然耐久性的影响[J].安徽农业大学学报,2011,38(3):453-457,5.基金项目
"十一五"国家科技支撑计划(2006BAJ04A02-10)资助. （2006BAJ04A02-10）
