香椿木材物理力学性质及抽提物含量研究  

Physical-mechanical properties and extractive contents of Toona sinensis wood

作　　者：卢丹[1] 齐锦秋[1] 罗建勋[2] 黄兴彦[1] 李凤[1] 

机构地区：[1]四川农业大学,四川雅安625014 [2]四川省林业科学研究院,四川成都610081

出　　处：《湖南林业科技》2015年第2期58-60,79,共4页Hunan Forestry Science & Technology

基　　金：四川省植物平台建设项目-香椿种质资源(201204307-06);木材工业与家具工程四川省高校重点实验室资助

摘　　要：对香椿木材的物理力学性质及抽提物含量进行了系统研究。结果表明:香椿木材为轻质木材,气干密度0.45 g/cm3;气干材径向、弦向、体积干缩率分别为1.53%、3.21%、4.85%;全干材径向、弦向、体积干缩率分别为3.33%、6.56%、10.46%;饱水径向、弦向、体积湿胀率分别为3.45%、7.01%、11.67%;香椿木材顺纹抗压强度25.64 MPa,抗弯强度75.01 MPa,抗弯弹性模量6331.24 MPa,端面、径面、弦面的硬度分别为2.90 k N、1.91 k N、2.08 k N;香椿木材的热水抽提物含量为5%、苯醇抽提物含量为4.47%、1%No OH抽提物含量为20%。The physical-mechanical properties and extractive contents of Toona sinensis wood were studied systematically.The results revealed that T. sinensis wood with air-dried density of 0. 45 g / cm3,belonged to light wood category. The airdried shrinkages of radial,tangential and volume were 1. 53%,3. 21%,4. 85% and those for oven-dried shrinkages were 3. 33%,6. 56%,10. 46%,respectively. The full anti-swelling efficacy of radial,tangential and volume of T. sinensis wood were 3. 45%,7. 01% and 11. 67%,respectively. The compressive strength parallel to grain,the bending strength,the bending elastic modulus of T. sinensis wood were 25. 64 MPa,66. 65 MPa and 6 331. 24 MPa,and the hardness in end,radial and tangential section were 2. 90 k N,1. 91 k N,2. 08 k N,respectively. The contents of hot-water extracts,alcohol-toluene extracts and 1% Na OH solubility of T. sinensis wood were 5%,4. 47% and 20%,respectively.

关 键 词：香椿 物理性质 力学性质 抽提物 

分 类 号：S781[农业科学—木材科学与技术]