热空气热处理对无机浸渍杨木与桦木物理性能的影响

打开文本图片集

中图分类号：TS652 文献标识码：A 文章编号：2095-2953（2025）08-0055-08

Abstract：Poplarand birch materials were subjected to impregnationmodification treatment with silicaas themain component，and then the impregnated materialswere heat-treated at 1409C ， ， 180‰ for 2h ， 3h ，and4h respectively.The efectof heattreatmentonthephysical propertiesof theoriginal materialsand impregnated materials wasinvestigated. The results show that： （1） Compared withthe impregnated materials，the air-drydensity，oven-dry density，and basic densityof modified poplar and birch materials decrease with the increase of heat treatment temperature and time；（2）The drying shrinkage rates of impregnated poplar，impregnated birch，heat-treated impregnated poplar，and heat-treated impregnated birch areallower than thoseof theoriginal materials；compared withthe impregnated materials，the drying shrinkage rates of modifiedpoplar and birch materials decrease with the increase of heat treatment temperature and time；（3）The hygroscopic expansion rates of impregnated poplar，impregnated birch，heat-treated impregnated poplar，and heat-treated impregnated birchare allowerthanthoseof the original materials；compared with the impregnated materials，the hygroscopic expansionrates of modified poplar and birch materials decrease with the increase of heat treatment temperature and time；（4） Compared with the impregnated materials，the lightnessof heat-treated impregnated materials decreasesand the color diference increases with the increase of heat treatment temperature and time；（5）The effect of heat treatment temperatureon the physical propertiesof wood is greater than thatofheat treatmenttime，andthe physical propertiesofthe impregnated materials heat-treated at 180% for 4h are better.

Key words：poplar wood; birch wood ;inorganic impregnation; heat treatment； physical properties

近年来，对木材进行浸渍改性与高温热处理改性已经成为热点。（剩余8883字）