摘要
采用锥形量热法(CONE)和热重分析法(TG)比较研究氯化锰和碳酸锰处理木材的燃烧、发烟和成炭特性。结果表明,在木粉中添加10%氯化锰或碳酸锰热压胶合制备的阻燃木材试样的总热释放量(THR)比未处理木材分别降低了39.4%和24.3%,总烟释放量(TSP)分别降低了93.3%和31.2%,CO平均释放量(m-COY)分别降低了27.0%和8.1%,这说明两种锰化合物对木材均具有阻燃、抑制烟雾和毒气的作用,氯化锰的这种作用更显著。锥形量热和热重数据结合残余炭形貌电镜照片分析表明氯化锰在高温条件下催化木材形成更多的炭,而且炭层结构更加紧密和稳定,从而有效降低木材的燃烧释热速率和烟气生成速率,降低木材引发火灾的危险性。
Manganese has catalytic action on many chemical reactions,however,whether manganese compounds have the effects of flame retardant and smoke suppression was not clear. CONE and TG were used to analyze the combustion properties,smoke-release properties,and carbonization characteristics of liriodendron treated by two important inorganic manganese compounds—manganese carbonate and manganese chloride. The results show that： relative to the untreated wood panels,the THR of wood panels treated with two manganese compounds respectively decreased by 24. 3% and 39. 4%,TSP decreased by 31. 2% and 93. 3% and mean-COY reduced 8. 1% and 21. 0% when the addition level of manganese carbonate and manganese chloride was 10%,indicating that both manganese carbonate and manganese chloride have effect on flame-retardation,suppressed smoke and toxic gases,manganese chloride was better than manganese carbonate.The date of thermogravimetric analysis,cone calorimetry and the SEM picture of residual carbon show that： the flame retardancy and smoke suppression effect of manganese chloride was better than manganese carbonate,because manganese chloride catalyzed wood into more carbon at high temperatures,carbon layer was more compact and stable,which can effectively reduce the heat release rate and smoke production rate of wood,reduce the risk of fire wood effectively.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第11期11076-11080,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(31170521)
湖南省研究生科研创新资助项目(CX2012B325)
中南林业科技大学研究生科技创新基金资助项目(CX2012B05)
关键词
锥形量热
氯化锰
碳酸锰
阻燃
抑烟
cone calorimeter
manganese chloride
manganese carbonate
flame retardant
smoke suppression
作者简介
陈旬（1988-），女，湖南岳阳人，在读硕士，师承胡云楚教授，主要从事阻燃剂及阻燃材料方面研究。
通讯作者：胡云楚，E-mail：hucsfu@163．com
