基于CONE法的热处理杨木燃烧特性研究

利用锥形量热仪CONE对不同热处理工艺下的杨木燃烧行为进行研究。结果表明:热处理后杨木中亲水的羟基、羰基数量明显减少,大量半纤维素降解。木材试样从外部热源引燃到燃烧结束,出现两个主要放热峰。热处理后杨木引燃和燃烧过程的发烟量较大,且热处理杨木引燃时间更短。热处理材的热释放峰值pk-HRR、平均热释放速率av-HRR和总热释放量THR均低于未处理材,表明其燃烧强度低于未处理材。热处理杨木燃烧过程的总烟释放量TSP较未处理材有所增加,同时其引燃时间也有所缩短。因此,对用于家具和室内装饰的热处理木材,建议进行恰当的阻燃处理。

Research on Combustion Performance of Heat-treated Poplar by CONE

In this paper,the combustion behavior of poplar wood under different heat treatment conditions was studied by CONE.The results showed that the number of hydroxyl and carbonyl groups in treated wood reduced significantly,accompanied by the degradation of a large amount of hemicellulose.The wood specimen was ignited by an external heat source and represented two major heat release peaks from beginning to the end of the combustion.The smoke release of heat-treated poplar is higher than untreated one,and the ignition time is shorter.For heat-treated wood,the heat release peak,average heat release rate,and total heat release were lower than untreated one,which indicated that the combustion intensity of heat-treated wood is lower than untreated one.The total smoke production of heat-treated wood increased compared with the untreated one and the ignition time was also shorter.Therefore,proper flame retardant treatment is recommended for heat-treated wood when applied in furniture and interior decoration.