摘要
采用浓度为4%的ACQ、CCA防腐剂处理马尾松木材,运用热分析法,通过热重分析(TGA)和微分热失重(DTG)表征了处理与未处理木材的热降解。结果表明:ACQ与CCA处理明显改变了木材的热降解曲线和热降解过程,处理加快了低温下的热解速率,缩短了高温热解区间;ACQ处理降低了木材的开始热解温度(Ti)和最大热解温度(Tmax),而CCA处理降低了木材的Tmax,但Ti几乎没有变化;两种防腐剂处理增加了木材的最终残余含量,分别比未处理材增加了28.45%和60.14%。
Abstract： This study aims to evaluate the effect of the wood preservatives ACQ and CCA having concentration of 4% on the thermal behavior of Pirtus massoniana Lamb. To do so, thermal degradation of treated and untreated wood samples was evaluated by thermogravimetry analysis （TGA） and differential thermogravimetry （DTG）. The re- sult showed that the thermal degradation curves and degradation process of wood were obviously changed by ACQ and CCA treatments; ACQ and CCA decreased the decomposition rate at low temperature, and shorten the pyrolysis zone of high temperature; ACQ reduced the initial temperature （Ti） and maximum temperature （Tmax） of the pyrolysis, while CCA reduced Tmax of the pyrolysis and the Ti of the pyrolysis had little ehange; as compared to untreatment, ACQ and CCA increased the residual char yield by 28. 45% and 60. 14% , respectively.
出处
《贵州林业科技》
2015年第4期31-36,共6页
Guizhou Forestry Science and Technology
基金
贵州省林业科研课题(黔林科合[2011]01号)
贵阳市科技计划项目(筑科合同[2012101]4-20号)
关键词
ACQ
CCA
马尾松
热重分析
ACQ
CCA
Pinus massoniana Lamb.
thermogravimetry analysis
