树脂漆对木材燃烧特性与烟气毒性的影响

Influence of resin paint on the combustion property and smoke density of wood

选取带有表面树脂漆的桦木和楸木,采用锥形量热仪,选取25、35、45、55kW/m^2的热辐射通量,分析不同热辐射通量条件下的点燃时间、燃烧初期热释放速率特性、总热释放速率、一氧化碳体积分数等,得出表面漆对木材燃烧特性与烟气毒性特性的影响。结果表明:表面漆对桦木的最小点火能并无较大影响,减小了楸木的最小点火能;表面漆明显增大第一个热释放速率峰值;涂有表面漆的木材燃烧时一氧化碳体积分数会出现一个峰值;表面漆对木材燃烧特性的影响与木材种类密切相关。

Birch and catalpa with resin surface paint were selected,using the cone calorimeter,with radiant heat flux of 25,35,45,55 kW/m2,the influence of surface paint on wood combustion and the smoke toxicity characteristic were analyzed from the ignition time,heat release rate characteristics atearly stage of combustion,total heat release rate and volume ratio of carbon monoxide.The results showed that the surface paint on wood lit has little impact on the minimum ignition energy of birch,and it can reduce the minimum ignition energy of catalpa.The surface paint can increase the first heat release rate peak significantly.There was a peak of carbon monoxide concentration during the combustion of wood with surface paint.The effect of surface paint on wood combustion characteristics is related to wood species.