功能型木材改性剂对速生杨木物理力学性能的改性效果

Effect of wood modifiers on the physical properties of fast-growing poplar wood

以速生杨木为研究对象,通过木材改性剂对速生材浸渍强化处理,使用X射线衍射仪、扫描电子显微镜、能谱分析仪、傅氏转换红外线光谱分析仪对改性前后的木材进行表征,并分析改性前后木材的物理性能。结果表明:经木材改性后,速生材物理性能显著提高。X射线衍射仪数据表明,木材改性剂使木材结晶度从39.65%降到36.89%,能谱分析仪结果显示:氮(N)氧(O)碳(C)元素在木材内部分布均匀,扫描电子显微镜谱图分析了木材改性剂在木材管孔中的分布,最后红外光谱图表明改性剂与木材内部集团发生交联反应,并且羟基数目大量减少。

Impregnation drying of fast-growing poplar wood was conducted through wood modifiers, and the characteristics of poplar wood before and after modification were observed with X-ray diffractometer （XRD）, scanning electron microscope （SEM）, energy-dispersive spectrometer and Fourier transform infrared （FTIR） spectrophotometer to analyze the physical properties of the wood. The results indicated that the modification could significantly improve physical properties of the poplar wood. XRD data showed that wood modifier could reduce crystallinity of wood from 39.65% to 36.89%. The findings of energy-dispersive spectrometer indicated that N, O and C were evenly distributed in the wood. SEM spectrum analyzed the distribution of wood modifier in the wood pores. Finally, the FTIR spectra showed that there was cross-linking reaction between the modifier and the internal parts of the wood and the number of hydroxyl decreased sharply. [ Ch, 4 fig. 1 tab. 7 ref.