杉木热处理材的耐腐性研究

Study on Decay Resistance of Heat-Treated Chinese Fir

采用白腐菌(彩绒革盖菌)和褐腐菌(绵腐卧孔菌),对不同温度热处理前后杉木木材的耐腐性进行研究。研究结果表明:热处理材的处理温度对白腐菌腐朽性没有影响,而褐腐菌对热处理材的腐蚀性随温度的上升而下降,当温度升至220℃时,木材的质量损失率降为0,耐腐性上升为Ⅰ级强耐腐等级。

The effect of heat-treatment on Chinese Fir to improve decay resisfamce was investigated in this study. After being heat-treated, Chinese Fir samples were exposed to white-rot fungus （Coriolus versioolor） and brown-rot fungus （Poria vaporaria） for 12 weeks and their weight losses were monitored periodically. It was found that white rot fungus had very little effect on the durability. However, the brown rot fungus caused about 40% weight loss in the control samples. After being heat-treated at 220℃ for 3 hours, the Chinese fir samples had no measurable weight loss when exposed to the brown rot fungus for 12 weeks.