[1]杨亮庆,刘一星,蔡英春. PEG400预处理枫桦圆盘干燥特性研究[J].西北林学院学报,2013,28(04):153-157.[doi:10.3969/j.issn.1001-7461.2013.04.31]
　YANG Liang-qing,LIU Yi-xing,CAI Ying-chun. Drying Characteristics of Betula costata Disk Pretreated with PEG400[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(04):153-157.[doi:10.3969/j.issn.1001-7461.2013.04.31]
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 PEG400预处理枫桦圆盘干燥特性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第28卷
期数:
2013年04期
页码:
153-157
栏目:
出版日期:
2013-07-30

文章信息/Info

Title:
 Drying Characteristics of Betula costata Disk Pretreated with PEG400
文章编号:
1001-7461(2013)04-0153-05
作者:
 杨亮庆; 刘一星; 蔡英春
 （1.黑龙江省木材科学研究所，黑龙江 哈尔滨 150081；2.东北林业大学 生物质材料科学与工程教育部重点实验室，黑龙江 哈尔滨 150040）
Author(s):
 YANG Liang-qing;  LIU Yi-xing;  CAI Ying-chun
 (1.Heilongjiang Institute of Wood Science, Harbin, Heilongjiang 150081, China；2.Key Laboratory of Bio-based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China)
关键词:
 ; PEG400; 预处理; 枫桦圆盘; 干燥开裂
Keywords:
 ; PEG400;  pretreatment;  Betula costata;  drying cracking
分类号:
S781.71
DOI:
10.3969/j.issn.1001-7461.2013.04.31
文献标志码:
A
摘要:
 将木材加工成圆盘是扩大木材、尤其是低质材应用范围，提高其经济价值的一条有效途径。为解决圆盘干燥过程中易于出现的开裂问题，以人工林枫桦圆盘为研究对象，采用PEG400溶液进行预处理，研究了处理对圆盘干燥特性的影响，并对PEG400抑制圆盘开裂的机理进行了分析。结果表明：该处理方法可使圆盘在40 mm厚枫桦锯材干燥基准条件下获得良好的干燥质量，提高了对干燥条件的适应性，很好地解决了圆盘的干燥问题；对径向心表层终含水率梯度产生明显影响；指出处理后弦径向干缩系数间差值的变小是PEG400抑制圆盘开裂的主要机制。
Abstract:
 In order to expand the application extent of the woods with low quality, and to promote their economic values,one of the effective ways is to process them into disk-shaped timber (DST).However,DST is easy to be cracked during drying.To solve the problem, a solution called PEG400 was applied for the pretreatment before making the Betula costata DST.The influences of the pretreatment on the drying characteristics of B.costata DST were examined. The mechanism of preventing the occurrence of the cracking was discussed. The results showed that drying quality of pretreated DST with a thickness of 40 mm was satisfactory.The adaptability for the drying conditions was promoted after the pretreatment.The pretreatment significantly affected radial moisture content gradient.To diminish D-value of shrinkage coefficient between radial and tangential direction was the major function of restraining cracking by PEG400.

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备注/Memo

备注/Memo:
 收稿日期：2012-11-19 修回日期：2013-03-14
基金项目：黑龙江省财政项目（HCZ201301）；国家自然科学基金（31270595）。
作者简介：杨亮庆，男，博士，研究方向：木材干燥。E-mail:yanglq200@sohu.com
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