进口桃花心木木材物理与力学性能评价  

Physical and Mechanical Properties of Imported Swietenia macrophylla Wood

作　　者：吴艳华 贾茹 任海青[1] 周永东[1] 吴章康[2] 王玉荣[1] WU Yan-hua;JIA Ru;REN Hai-qing;ZHOU Yong-dong;WU Zhang-kang;WANG Yu-rong(Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China;College of Materials Engineering, Southwest Forestry University, Kunming 650224, Yunnan, China)

机构地区：[1]中国林科院木材工业研究所,北京100091 [2]西南林业大学材料工程学院,云南昆明650224

出　　处：《木材工业》2019年第2期44-47,共4页China Wood Industry

基　　金：中央级公益性科研院所基金项目"桃花心木和辐射松木材性质与加工技术研究"(CAFYBB2017ZC003)

摘　　要：为了提高进口材的有效利用率,依照国家标准,研究我国市场上用量较大的典型进口阔叶树木材——桃花心木的性能。结果表明:桃花心木木材的气干密度属于中等等级;差异干缩较小,尺寸稳定性能较好;顺纹抗剪强度达到高等级,硬度较大,抗弯强度为中等级,但抗弯弹模和冲击韧性较低,综合强度评价属于低等材级别。在加工利用时,应根据其材质特性而物尽其用。In order to improve utilization of imported wood, wood properties of imported Swieteniamacrophylla wood which was widely used at in China was tested and evaluated according to relevant Chinese national standards. The results showed that: 1) air-dry density grade of the wood was classified as medium with smaller differential shrinkage and better dimensional stability in dry shrinkage. 2) comprehensive strength evaluation grade of the wood was classified as low with high shearing-strength parallel to grain, big hardness, medium bending strength but poor bending modulus of elasticity and poor impact toughness.Therefore, it was suggested that characteristics of the wood properties should be fully considered to make better use of the wood.

关 键 词：进口材 桃花心木 物理力学性能 

分 类 号：S781[农业科学—木材科学与技术] S792.33[农业科学—林学]