加拿大颤杨木材物理力学性能研究与评价

Evaluation of Physical and Mechanical Properties of Canadian Aspen

测试加拿大艾伯塔产颤杨木材的物理力学性能性能,并与国产部分杨木性能进行对比分析。结果显示,颤杨木材的密度较低,径、弦向干缩湿胀率差异较小;硬度较低,属软材,物理性能与国产杨木非常接近;其力学性能则优于国内杨木,可以作为国内杨木的补充,用于家具与木制品的生产。

The physical and mechanical properties of Canadian aspen(Populus tremuloides Michx.)from Alberta were examined and compared with the properties of China native poplar.The physical properties of Canadian aspen were comparably similar to those of native poplar,while the Canadian aspen was slightly lower in density.The mechanical properties of Canadian aspen were higher than those of native poplar from China except the harness.The differential drying shrinkage and the rate of expansion between radial and tangential direction remained minor.Therefore,it was suggested that the Canadian aspen can be one of substitute species of native poplar used in furniture and handicrafts manufactory in China.