聚甲基丙烯酸甲酯塑合木的燃烧性能  

Study on Combustion Properties of Wood-Polymethyl Methacrylate Composites

作　　者：刘明利[1] 周军浩[1] 王清文[1] 廖恒[1] 王奉强[1] 张志军[1] 

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨150040

出　　处：《建筑材料学报》2010年第3期357-362,共6页Journal of Building Materials

基　　金：全国优秀博士学位论文作者专项资金资助项目(200457);黑龙江省杰出青年科学基金资助项目(JC04-01)

摘　　要：以甲基丙烯酸甲酯和木材单板为原料、偶氮二异丁腈为自由基引发剂,采用真空加压浸注-热固化法制备了3种塑合木单板,利用锥形量热仪对这3种塑合木及其素材的燃烧性能进行了对比研究.结果表明,与素材相比,塑合木的点燃时间延长,热释放总量增加,但热释放速率峰值略低,在整个燃烧过程中热释放趋于均匀化,火灾性能指数提高;塑合木单板产生的烟气总量增大,但烟释放趋于平缓且滞后;CO的生成量有降低趋势并有所滞后,烟气毒性有所降低.Wood-polymethyl methacrylate composites（WPC） were prepared by vacuum-pressure impregnation of wood veneer with methyl methacrylate and subsequent hot curing in the presence of azobisisobutyrynitrile as initiator.The combustion parameters of the prepared WPC were determined by a cone calorimeter and the combustion properties of prepared composite was compared with that of the untreated wood veneer.The results show that,compared to the untreated wood veneer,the WPC has prolonged time to ignition,and greater total heat release,while it has lower peak value of heat release rate and the more even heat release during the whole process of combustion,thus its fire performance index increases.This means that the flashover time of WPC would prolong in a fire;the total smoke production of WPC increases,while smoke releases more smoothly;the CO yield tends to decrease and its formation is somewhat delayed.

关 键 词：塑合木 燃烧性能 CO浓度 

分 类 号：TU528.0[建筑科学—建筑技术科学]