聚甲基丙烯酸甲酯塑合木的燃烧性能.pdf

第13卷第3
建筑材料学报
Vol.13、No.3
2010年6月
JOURNAL OF BUILDING MATERIALS
Jun.,2010
文章编号:1007-9629(2010)03-0357-06
聚甲基丙烯酸甲酯塑合木的燃烧性能
刘明利,周军浩,王清文,廖恒,王奉强,张志军
(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)
摘要:以甲基两烯酸甲酯和木材单板为原料、偶氩二异丁腈为自由基引发剂,采用真空加压漫注
热固化法制备了3种塑合木单板,利用维形量热仪对这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
关键词:塑合木;燃烧性能;CO浓度
中图分类号:TU528.0
文献标志码:A
doi:10.3969/j.issn.1007-9629.2010.03.017
Study on Combustion Properties of Wood-polymethyl Methacrylate Composites
L IU Ming-li, ZHOU Junhao, WANG Qing-wen, LIAO Feng
WANG Feng-qiang, ZHANG Zhi-jun
(MOE Key Laboratory of Bic-based Material Science and Technology, Northeast Forestry University, Harbin 150040, China)
Abstract: Wood-polymethyl methacrylate composites (WPC) were prepared by vacuum-pressure impregna-
tion of wood veneer with methyl methacrylate and subsequent hot curing in the presence of azobisisobu-
tyrynitrile as initiator. The combustion parameters of the prepared WPC were determined by a cone calo
rimeter 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 de
Key words: wood-polymethylmethacrylate composite ( WPC); combustion property; CO concentration
在木材中注入乙烯基类单体或低聚物、预聚物机械强度高、耐疲劳、使用寿命长等),被广泛地用于
后,利用射线照射或加热等手段提供能量,引发其在高档家具、拼花地板、家具楼梯踏板、铁道枕木、工艺
木材内聚合固着,制得的材料称为木材一聚合物复品等方面2.由于木材自身的可燃性以及在处理中
合材料( wood-polymer composite,WPC)·简称木塑又注入了可燃的聚合物,所得塑合木的燃烧热值可
复合材,俗称塑合木.塑合木不仅保留了木材的天能升高,因而其燃烧性能的研究对于评估火灾危险
然优良性能,而且弥补了其固有的缺点,并赋予新的性和指导应用是十分必要的
优良性能(如吸水率低、尺寸稳定性好、耐腐蚀性强、
火灾对生命、财产和环境的危害主要由材料燃
收稿日期:2009-07-27;修订日期:2009-09-04
基金项目: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(JKCO4-01)
第一作者:刘明利(1978~),女,山东诸城人,东北林业大学博士生.E-mail:liuminglil7c163.com
通信作者:王清文(1961-),男,东北林业大学长江学者特聘教授,博土生导师.E- mail: qwwang@ nefu.edu,cn