文献类型：期刊文献

中文题名：桉树真空热处理材表面性能分析

英文题名：Surface Performance of Eucalyptus Lumber after Vacuum-Heat Treatment

作者：阳财喜[1] 阎昊鹏[1] 刘君良[1]

第一作者：阳财喜

机构：[1]中国林业科学研究院木材工业研究所国家林业局木材科学与技术重点实验室

年份：2010

卷号：46

期号：10

起止页码：130-134

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金："十一五"国家科技支撑计划项目"家具装修框架材的加工技术"(2006BAD18B)

语种：中文

中文关键词：粗皮桉;热处理;表面自由能;傅里叶红外光谱分析;热重分析仪

外文关键词：Eucalyptus pellita; heat treatment; surface free energy; FTIR analysis; thermogravimetric analyzer

分类号：S781.37

摘要：用真空热处理法对粗皮桉木材进行热处理,处理温度分别为160,180,200,220及240℃,处理时间均为4h。采用接触角测定法,对素材及不同温度条件下热处理材的接触角及表面自由能进行分析;用傅里叶红外光谱分析法,研究木材在热处理过程中的化学(官能团)变化;用热分析仪分析不同温度条件下木材的热解质量损失率。结果表明:素材的表面自由能(50mN·m-1)<160℃热处理材的表面自由能(46mN·m-1)<240℃热处理材的表面自由能(32mN·m-1),热处理后木材中极性的羰基官能团减少,当热处理温度≤180℃时,木材的质量损失率在1%左右;而热处理温度>180℃时,每升高20℃,木材的质量损失率约下降2倍。
Eucalyptus timbers were treated through vacuum heat treatment method for 4 h at five different temperatures（160,180,200,220 and 240 ℃） . The surface free energy of untreated and heat-treated wood was studied using contact angle method,and during the heat treatment procedure,the chemical change of wood was analyzed by Fourier transform infrared spectroscopy（FTIR） . In addition,the weight loss ratios of different temperature heat-treated wood were also analyzed by thermogravimetric analyzer. The results showed that compared with surface free energy of untreated wood（50 mN·m^-1） ,the surface free energy of heat-treated wood at 240 ℃（32 mN·m^-1） was higher and that of heat-treated wood at 160 ℃（46 mN·m^-1） was lower. According to FTIR spectra of untreated and heat-treated wood,the number of polar carboxyl group of heat-treated wood was decreased. And when the heat-treated temperature was lower than 180 ℃,the weight loss ratio was about 1%,and as the heat-treated temperature exceeded 180 ℃,the weight loss ratio decreased twice or so by the temperature increasing 20 ℃ each time.