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 com-pounds respectively decreased by 24.3% and 39.4%,TSP decreased by 31.2% and 93.3% and mean-COY re-duced 8.1% and 21.0% when the addition level of manganese carbonate and manganese chloride was 10%,indi-cating 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 thermogravimet-ric 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 chlo-ride 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 ef-fectively.
参考文献
| [1] | Li Hongyuan .Study on the flame retardant and smoke suppression effect of the flame retardant mechanism on wood material[J].Science & Technology Vision,2012,25:396-397. |
| [2] | 王奉强,王清文,张志军,邵博.CONE法研究木材阻燃剂的阻燃性能[J].消防科学与技术,2010(11):990-992. |
| [3] | Wu Yuzhang;Hua Yukun .Development tendency in fire-retardant research of wood materials[J].China Forest Products Industry,1997,24(04):1-4. |
| [4] | Zhang Jun;Ji Kuijiang;Xia Yanzhi.Polymer combustion and flame retardant technology[M].Beij ing:Chemical Industry Press,2005 |
| [5] | 胡云楚,吴志平,孙汉洲,周莹,刘元.聚磷酸铵的合成及其阻燃性能研究[J].功能材料,2006(03):424-427. |
| [6] | 国占生,马思源,王海.无机阻燃剂对软PVC材料的阻燃消烟作用[J].衡水学院学报,2007(01):93-96. |
| [7] | Li Bing;Wang Jianqi;Zhang Aiying .Study on the flame retardant and smoke suppression effect of the Cu2 O and MoO3 on PVC by CONE[J].Chinese Science Bulletin,1998,43(08):836-840. |
| [8] | 李吉花,蒋毅,王娟芸,陈君和,张志强,王奂祎.用于苯催化燃烧的Cu-Mn-O/Ce/γ-Al_2O_3-TiO_2催化剂[J].应用化学,2010(02):137-141. |
| [9] | 郑育英,邓淑华,黄慧民,周立清,余双平.汽车尾气净化催化剂的研究进展[J].广东工业大学学报,2004(03):28-33. |
| [10] | Schartel B;Hull T R .Development of fire-retarded mate-rials interpretation of cone calorimeter data[J].Fire and Materials,2007,31(05):327-354. |
| [11] | 王清文,李坚.木材阻燃剂FRW的阻燃机理[J].林业科学,2005(05):123-126. |
| [12] | 夏燎原,吴义强,胡云楚.锡掺杂介孔分子筛在木材阻燃中的烟气转化作用[J].无机材料学报,2013(05):532-536. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%