摘要
为改善杨木质软、强度低的特点,同时提高其尺寸稳定性,首先对杨木试样进行压缩处理,再进行热处理,并检测压缩杨木和热处理压缩杨木的吸湿、吸水膨胀率。结果表明:压缩率愈大,压缩杨木试样厚度方向和体积膨胀率愈大;经热处理后,试样的尺寸稳定性明显提高。
Poplar samples were hot pressed for 15 - 35 min with different compression temperatures from 130-170 ℃and then heat treated from 180-200℃ for 1.5-3.5 hours. The results showed that adsorption and water absorption expansion rates of the densified samples increased when the compression temperatures increased. The heat treatment could improve the dimensional stability of densified poplar wood.
出处
《木材工业》
北大核心
2012年第5期41-44,共4页
China Wood Industry
基金
引进国际先进林业科学技术创新项目(948计划)(2011-4-12)
关键词
杨木
压缩处理
热处理
吸湿膨胀率
吸水膨胀率
poplar
densification
heat treatment
adsorption expansion rate
water absorptionexpansion rate
