摘要
使用锥形量热仪研究了不同温度下阻燃剂磷酸氢二铵[(NH4)2HPO4]处理与未处理竹丝,并分别用三聚氰胺苯酚甲醛(MPF)共缩聚树脂和酚醛(PF)树脂浸渍所得竹丝成形材的燃烧反应过程。采用化学动力学法建立了4种竹丝成形材在燃烧过程中质量损失率和时间的动力学模型,并分析比较了4种试件的质量损失率、热释放总量、释热速率、释烟总量、一氧化碳释放量和二氧化碳释放量等燃烧性能和燃烧反应表观活化能Eα。结果显示,当4种试件在质量损失率大于60%以后,均出现燃烧拐点。阻燃剂磷酸氢二铵能有效提高竹丝成形材的阻燃性能,燃烧温度735℃时,4种试件的阻燃效果依次为:经磷酸氢二铵处理的MPF树脂竹丝成形材>经磷酸氢二铵处理的PF树脂竹丝成形材>未经磷酸氢二铵处理的MPF树脂竹丝成形材>未经磷酸氢二铵处理的PF树脂竹丝成形材。
The combustion behavior of bamboo strips with four treatments ： （ 1 ） soaked by melamine-phenolformaldehyde （MPF）resin and （NH4）2HPO4, （2） by phenol-formaldehyde （PF）resin, and（NH4）2HPO4, （3） by MPF resin, and （4） by PF resin, at four temperatures （610, 681, 735, and 796 ℃） was studied using a cone calorimeter. When the bamboo strip material was in the combustion process a chemical dynamic method was used to establish the mass loss rate and time for a dynamic model. The mass loss rate, total heat release, rate of heat release, total smoke released, carbon monoxide and carbon dioxide emissions, combustion behavior, and the activation energy （Eα） of the combustion reaction were all analyzed and compared. Results showed that when the mass loss rate of the bamboo strip was greater than 60%, there was an inflection point in the combustion curve. Also, （ NH4 ） 2HPO4 improved fire retard ant properties of the bamboo strip. When the combustion temperature was 735 ℃, the fire-retardant capability for the bamboo strip was： Treatment l〉Treatment 2〉Treatment 3〉Treatment 4.
出处
《浙江林学院学报》
CAS
CSCD
北大核心
2009年第6期767-773,共7页
Journal of Zhejiang Forestry College
基金
浙江省科学技术重大专项重点项目(2006C12053
2007C12018)
关键词
木材学
阻燃
竹丝成形材
燃烧反应动力学
wood science
fire retardant
bamboo strips forming materials
combustion behavior kinetics
