摘要
选取文物建筑中4种常见的木材为研究对象,对其在5 K/min的升温速率下进行热重实验。将木材的热解过程分为4个阶段,木材热失重主要在第二和第三阶段进行。对不同温度阶段下的热解过程进行分析,并建立了木材热解的动力学方程,求出热解动力学参数。木材热稳定性从高到低依次为:杉木热稳定性最好,楠木次之,白松和红松稳定性相当。
Four common types of woods in historic buildings were selected as research objects,and thermogravimetric experiments were performed at heating rate of 5 K/min.The pyrolysis process of wood is divided into 4 stages,the thermal weightlessness of wood mainly occurs in the second and third stages.The pyrolysis process at different temperature stages was analyzed,the kinetic equation of wood pyrolysis was established,and the pyrolysis kinetic parameters were obtained.The order of wood thermal stability from high to low is as follows:Chinese fir has the best thermal stability,followed by nanmu,white pine and Korean pine have the same stability.
作者
怀超平
刘芳
董佩文
彭嫚
HUAI Chao-ping;LIU Fang;DONG Pei-wen;PENG Man(School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《消防科学与技术》
CAS
北大核心
2020年第6期757-760,共4页
Fire Science and Technology
基金
北京市科委绿通项目“文物建筑电气火灾监控及防火技术研究与应用示范”(Z171100004417031)。
关键词
热重分析
文物木材
热解
火灾
反应动力学
thermogravimetric analysis
historical wood
pyrolysis
fire accidents
reaction kinetics
