基于CONE的速生人工林杨树木材热释放特性研究  

Study on Burning Heat Release Characteristics of Poplar Wood Based on Cone Calorimeter

作　　者：尚健雄 胡进波[1] 苌姗姗[1] 于朝阳 刘元[1] 郑磊 SHANG Jian-xiong;HU Jin-bo;CHANG Shan-shan;YU Zhao-yang;LIU Yuan;ZHENG Lei(College of Material Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,P.R.China;CMA(Wuhu)Robotics Co.,Ltd.,Wuhu 241000,P.R.China)

机构地区：[1]中南林业科技大学材料科学与工程学院,长沙410004 [2]希美埃(芜湖)机器人技术有限公司,芜湖241000

出　　处：《林产工业》2020年第6期7-11,22,共6页China Forest Products Industry

基　　金：国家重点研发计划(2017YFB1303904);国家林业和草原局林业科学技术研究项目(2017-03)。

摘　　要：以杨木径切板和弦切板为材料,按照ISO5600-1:2015标准,采用锥形量热仪在两种不同辐射功率下,研究杨木在燃烧中的热释放特征。结果表明:在不同辐射功率下,弦切板的第二热释放峰出现的时间要晚于径切板;在不同受热方向上,弦切板B的综合热释放参数略好于弦切板A,采用弦切板B面向火源更加安全。在50 kW/m^2辐射功率下,不同厚度杨木的第一热释放峰出现的时间相同;随着厚度的增加,杨木弦切板在燃烧过程中突破热解区的时间随之延长,厚度越大,杨木板第二热释放峰出现的时间越晚,且第二峰值随之变小,材料的火灾增长指数也越小,在火灾中的危险性相对越低。Using poplar radial cutting board and chord cutting board as materials,according to ISO5600-1:2015 standard,a cone calorimeter was used to study the heat release characteristics of poplar wood during combustion under two different radiant powers.The results showed that under different radiation power,the second heat release peak of the chopped cutting plate appeared later than the radial cutting plate;in different heating directions,the comprehensive heat release parameter of the chopped cutting plate B was slightly better than that of the chopped cutting plate A.It was safer to use the string cutting board B facing the fire source.Under the radiation power of 50 kW/m^2,with the increase of the thickness,the first heat release peaks of poplar of different thickness appeared for the same time;the time for the poplar chopped cutting board to break through the pyrolysis zone during the combustion process was extended,and the heat release peak appeared longer and longer,and the second peak was smaller and smaller;the thicker the wood,the smaller the fire growth index of the material,and the lower the risk of fire.

关 键 词：杨木 锥形量热仪 热释放速率 总热释放量 点燃时间 热释放特性 

分 类 号：TS611[轻工技术与工程] S781.37[农业科学—木材科学与技术]