人工林珍贵树种柚木和楸木的热解特性及动力学  

Pyrolysis Characteristics and Kinetics of Wood from Teak and Catalpa Plantations

作　　者：李路明 闵德秀 翁淇臻 陈志林[1] 卢金汉 姜鹏 LI Lu-ming;MIN De-xiu;WENG Qi-zhen;CHEN Zhi-lin;LU Jin-han;JIANG Peng(Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China;Shandong Xingang Enterprise Group Co.Ltd.,Linyi 276000,Shandong,China;Beijing Forestry University,Beijing 100083,China)

机构地区：[1]中国林业科学研究院木材工业研究所,北京100091 [2]山东新港企业集团有限公司,山东临沂276000 [3]北京林业大学,北京100083

出　　处：《木材工业》2020年第6期5-10,共6页China Wood Industry

基　　金：国家重点研发计划“珍贵树种木门增值加工技术集成与示范研究”(2017YFD0601106);山东省重大科技创新工程“高性能生物基建材制备技术的集成创新及产业化”(2019JZZY010305)。

摘　　要：木材阻燃体系的选择应考虑其热解特性,选取人工林珍贵树种柚木、楸木和速生材杉木、辐射松为研究对象,通过化学成分和热重(TG)分析试验,研究热解特性、热解动力学模型和参数,为阻燃体系选择提供理论依据。结果表明:四种木材的热解过程均可分为失水、过渡、剧烈降解和成炭等四个阶段;柚木、楸木的最大热解速率温度、活化能和活化因子均低于杉木和辐射松,适用于热解温度相对较低的阻燃体系。The selection of a wood flame retardant system is closely related to its pyrolysis characteristics.To provide theoretical bases for thermal degradation and flame retardant system selection,the chemical composition and thermo gravimetric(TG)analysis experiments were conducted on the wood of teak(Tectona grandis)and catalpa(Catalpa bungei)from plantations,as well as using wood samples of Chinese fir(Cunninghamia lanceolata)and radiata pine(Pinus radiata)as control groups.The pyrolysis characteristics,thermal degradation kinetic models and parameters were explored.The results showed that:1)the pyrolysis process of the four wood species could be divided into four stages:water loss,transition,severe degradation and char-forming;2)the temperature under maximum decomposition rate,activation energy and activation factor of teak and catalpa were lower than those of Chinese fir and radiata pine.The teak and catalpa wood are suitable for a flame retardant system with relatively lower thermal decomposition temperature.

关 键 词：柚木 楸木 热解特性 热解动力学 阻燃体系 

分 类 号：S781.37[农业科学—木材科学与技术] TS67[农业科学—林学]