高温热处理对人工林杨木物理力学性能和尺寸稳定性的影响

Effects of heat treatment on physical and mechanical properties and dimensional stability of plantation poplar

以蒸汽为介质,采用高温热处理法对杨木木材进行热处理,研究了处理温度和处理时间对杨木木材的物理力学性能和尺寸稳定性的影响。结果表明:处理温度和处理时间对木材物理力学性能和尺寸稳定性均有较大影响。综合考虑处理温度和处理时间对木材物理力学性能和尺寸稳定性的影响及成本等因素,较佳的热处理工艺参数为:温度180℃,时间3.5 h。

The research that temperature and time of heat treatment affected the performance of dimensional stability and mechanical properties on heat-treated plantation poplar wood was conducted by taking steam as medium, and with high temperature treatments. The results show that the dimensional stability and mechanical properties of heat-treated wood were easily susceptible to temperature and time. After considering comprehensively, the optimal parameters of hot-treated wood are as followings： temperature 180 ℃, hotprocessing time 3.5 hours.