文献类型：期刊文献

中文题名：热处理对进口辐射松木材抗弯性能和尺寸稳定性的影响

英文题名：Heat Treatment Effect on Bending Properties and Dimensional Stability of Imported Radiata Pine Wood

作者：付宗营[1] 周凡[1] 高鑫[1] 周永东[1]

第一作者：付宗营

机构：[1]中国林科院木材工业研究所

年份：2019

卷号：33

期号：6

起止页码：47-50

中文期刊名：木材工业

外文期刊名：China Wood Industry

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：中央级公益性科研院所基本科研业务费专项资金“桃花心木和辐射松木材性质与加工技术研究”(CAFYBB2017ZC003)

语种：中文

中文关键词：进口辐射松木材;热处理;抗弯性能;尺寸稳定性

外文关键词：imported Radiata pine wood;heat treatment;bending properties;dimensional stability

分类号：S781.71;S791.252

摘要：对进口辐射松木材分别以4个温度水平和3个时间水平进行热处理。结果显示:随着温度升高,试材抗弯弹性模量呈现波动式变化,200℃时出现最大值;抗弯强度逐渐减小;随时间延长,抗弯性能均缓慢下降。热处理可有效提高试材尺寸稳定性,试材平衡含水率、阻湿率和抗胀率主要受温度影响,受热处理时间的影响较小。
Imported radiata pine wood samples were heat-treated at four temperatures ranging from185℃ to 230℃ for 4 hours.At 215℃,the wood samples were treated for three,four and five hours,respectively.The bending properties and dimensional stability of the samples were tested.Results showed that the modulus of elasticity(MOE) of the samples fluctuated with the increase of treating temperature.The MOE reached the maximum value when treating temperature was 200℃.Meanwhile the modulus of rupture(MOR) of the samples kept falling as the treating temperature increased.The MOE and MOR were all slightly decreased when the treating time extended.The heat treatment improved the dimensional stability of the samples significantly.The equilibrium moisture content,moisture excluding efficiency and anti-swelling efficiency of the samples were more affected by the treating temperatures than the durations.