汽蒸处理对王桉木材干燥皱缩恢复的研究  

Study on steam treatment on eucalyptus regnans lumber drying collapse recovery

作　　者：韩宇豪 彭冲[1] 范文俊[1] 涂登云[1] 钟伟 

机构地区：[1]华南农业大学材料与能源学院,广州510642 [2]广州厚邦木业制造有限公司研发中心,广州511480

出　　处：《木材加工机械》2016年第2期37-39,36,共4页Wood Processing Machinery

基　　金：国家农业科技成果转化资金项目(2012GB2C200180)

摘　　要：针对王桉木材干燥过程中易发生皱缩的现象,通过汽蒸处理使王桉木材恢复,通过皱缩恢复率来衡量王桉木材汽蒸处理过程中的皱缩恢复程度。结果表明：王桉木材皱缩的恢复主要发生在处理前期和中期,皱缩恢复与木材的吸湿有一定的相关性。含水率为20%、15%、12%的试材的平均皱缩深度分别从处理前的6.60mm、5.84mm、5.56mm恢复到处理后的3.72mm、3.23mm、3.41mm,恢复效果明显。因此,生产中可以采用将王桉木材干燥至含水率15～20%时,汽蒸处理4～5h的生产工艺对王桉进行皱缩恢复处理。Eucalyptus regnans lumber is hard to be dried and most drying defects are collapsed and split which affect the utilization of Eucalyptus regnans and reduce the strength of wood. In this study, steam Treatment is used to recover the collapsed Eucalyptus regnans lumber, and collapse coefficient is proposed as an index of the collapse severity.Results showed that： the test specimen moisture content is 20%, the average collapse depth is from 6.60 mm to 3.72 mm after treatment. the test specimen moisture content is 15%, the average collapse depth is from 5.84 mm to 3.23 mm after treatment. the test specimen moisture content is 12%, the average collapse depth from5.56 mm to 3.41 mm after treatment.

关 键 词：王桉 汽蒸处理 皱缩回复 

分 类 号：S781.7[农业科学—木材科学与技术]