复合NP阻燃剂处理杨木的热解特性与动力学分析  

Pyrolysis characteristics and kinetics of poplar treated by compound N-P flame retardant

作　　者：张晓滕 薛磊[1] 张宇[1] 储德淼 母军[1] 

机构地区：[1]木质材料科学与应用教育部重点实验室,北京林业大学材料科学与技术学院

出　　处：《北京林业大学学报》2016年第1期112-117,共6页Journal of Beijing Forestry University

基　　金：林业公益性行业科研专项(201204704-6)

摘　　要：为研究复合NP阻燃剂处理杨木的热解特性与阻燃机理,利用热分析法对蒸馏水、聚硅酸磷酸二氢铝（AlSi）、NP阻燃剂（N-P）、聚硅酸磷酸二氢铝复合NP阻燃剂（N-P-Al-Si）处理杨木（编号为A、B、C、D）的燃烧性能进行探讨,分别运用Ozawa-Flynn-Wall法和修正Coats-Redfern法计算阻燃杨木活化能。结果表明：A仅有1个热解阶段,此阶段的活化能值为65~70 k J/mol。阻燃处理材的热解大致分为2个阶段,D的主要热解阶段介于B、C之间,其热释放速率缓慢,失重速率和失重量最小。并且在不同的升温速率下D的失重趋势一致,随着升温速率的增大,失重曲线向高温方向移动。D第1、2阶段的活化能分别为120、240 k J/mol,均显著大于C（115 k J/mol）,表明Al-Si与N-P复配后的阻燃效率得到提高。In order to study the flame retardant mechanism and pyrolysis characteristics of poplar treated by compound N-P flame retardant, we applied thermal analysis method to analyze the combustion performance of poplar treated by distilled water,Al-Si,N-P and N-P-Al-Si,numbered as A,B,C and D,respectively. Ozawa-Flynn-Wall and Coats-Redfern（ modified） were used to calculate activation energy of flame retardant poplar. The results showed that A had only one pyrolysis process,with the activation energy value of this phase 65-70 k J / mol. The pyrolysis process of flame retardant treated poplar could be divided into two stages. The main pyrolysis stage of D was between that of B and C. D had the lowest weight loss rate and least weight loss,and heat release rate of this treatment was also slow.There was a similar trend of weight loss of TG curves of D at different heating rates,and weight loss curves shifted to higher temperature section with the increasing heating rate. The activation energies of the first and second phase of D（ 120 and 240 k J / mol） were higher than that of C（ 115 k J / mol）,indicating that the flame retardant efficiency was improved when Al-Si and N-P were blended.

关 键 词：杨木 阻燃 热解 动力学 

分 类 号：S781.46[农业科学—木材科学与技术] TS653.5[农业科学—林学]