桢楠木材的物理力学性质  

Timber Physical and Mechanical Properties of Phoebe zhennan

作　　者：李晓清[1] 唐森强 隆世良[1] 龙汉利[1] 张炜[1] 

机构地区：[1]四川省林业科学研究院,成都610081 [2]长宁县林业局

出　　处：《东北林业大学学报》2013年第2期77-79,共3页Journal of Northeast Forestry University

基　　金：国家林业局公益性行业专项(201104109)

摘　　要：对94年生桢楠木材的物理力学性质进行了测定和分析,结果表明,木材基本密度在0.5 g.cm-3以上,60～80 a间达到最大值0.54 g.cm-3。40年生的桢楠木材基本密度、顺纹抗压强度、抗弯强度、冲击韧性、端面硬度属中等;随着树木年龄增加,顺纹抗压强度、冲击韧性、抗劈力、顺纹抗剪强度、端面硬度随着树木年龄增大而增加;在80年生时木材冲击韧性属高等,端面硬度很硬。如果兼顾其它指标,在桢楠栽培经营中,木材利用成熟期初步确定60～80 a。The physical and mechanical properties of Phoebe zhennan wood in 1994 were measured and analyzed. The results showed when the wood basic density is over 0.5 g . cm-3, the density will reach its maximum 0.54 g . cm-3 in 60-80 year-old. The values of wood basic density, compression strength parallel to grain, bending strength, impact toughness and end surface hardness are the middle level when the tree is 40 year-old, and the values of compression strength parallel to grain, impact toughness, cleavage strength, shear strength parallel to grain and end surface hardness increase with the age growing. The impact ductility is higher and the end surface hardness is harder when the tree is 80 year-old. If other indicators are considered, the mature period of wood is 60-80 year-old in the cultivation and management of P. zhennan.

关 键 词：桢楠 物理力学性质 木材材性 珍贵用材 

分 类 号：S781.2[农业科学—木材科学与技术]