笔罗子木材物理力学性质的研究  

Physico-mechanical Properties of Meliosma rigida Wood

作　　者：曹文[1] 俞友明[1] 童再康[1] 骆文坚 

机构地区：[1]浙江农林大学,浙江临安311300 [2]浙江省林业种苗管理总站,浙江杭州310020

出　　处：《浙江林业科技》2015年第4期77-80,共4页Journal of Zhejiang Forestry Science and Technology

基　　金：浙江省重大科技专项"浙江省珍稀濒危林木种质资源收集保存与利用关键技术研究及基因库建设"(2006C12059-4);浙江省重点科技项目"浙江珍稀濒危树种现代保育关键技术研究"(2006C22064)

摘　　要：对笔罗子(Meliosma rigida)木材的物理力学性质的各项指标进行测定。结果表明:笔罗子木材气干密度为0.677 g/cm3,为中级,密度分散程度比较均匀,有利于旋切;其体积干缩系数为0.27%,其干缩性较小,尺寸稳定性较好;抗弯弹性模量为6.35 GPa,抗弯强度为79.95 MPa,均低于其他密度相近的树种;顺纹抗拉强度为153.97 MPa,顺纹抗压强度为48.02 MPa,属于中级;与其他密度相近的木材相比,笔罗子干缩性较小,软硬适中,具有一定的冲击韧性,是一种比较适合加工利用的树种。Determinations were conducted on physical and mechanical properties of Meliosma rigida timber from Qingyuan Forest Farm of Zhejiang province. The result showed that mean air-dry density was 0.677g/em3, with 9.44% of variable coefficient, indicating easy for rotary-cut. It had volume shrinkage coefficient of 0.27%, leading good dimension stability. The bending modulus of elasticity was 6.3.5 GPa, and bending strength 79.95 MPa, lower than those of other species with similar density. Tensile strength parallel to grain was 153.97 MPa, compressive strength parallel to grain 48.02 MPa. Determinations concluded that M. rigida timber could be easy processed.

关 键 词：笔罗子 木材 物理力学性质 

分 类 号：S781.2[农业科学—木材科学与技术]