人工林落叶松髓心方材的高频真空干燥

doi:10.11707/j.1001-7488.20120920

林业科学 ›› 2012, Vol. 48 ›› Issue (9): 127-131.doi: 10.11707/j.1001-7488.20120920

人工林落叶松髓心方材的高频真空干燥

李晓玲¹, 高瑞清¹, 构涛¹, 张立宾¹, 陈章景²

1. 中国林业科学研究院木材工业研究所北京 100091;2. 弗吉尼亚理工大学木材科学与林产品系费吉尼亚 24060

收稿日期:2011-11-02 修回日期:2012-05-23 出版日期:2012-09-25 发布日期:2012-09-25
通讯作者: 高瑞清

Radio Frequency/Vacuum Drying for Boxed-Heart Square Timber of Plantation Larch

Li Xiaoling¹, Gao Ruiqing¹, Gou Tao¹, Zhang Libin¹, Chen Zhangjing²

1. Research Institute of Wood Industry, CAF Beijing 100091;2. Dept. of Wood Science and Forest Products, Virginia Tech Blacksburg, VA 24060

Received:2011-11-02 Revised:2012-05-23 Online:2012-09-25 Published:2012-09-25

摘要/Abstract

摘要：

对截面尺寸为100 mm×100 mm 的人工林落叶松髓心方材进行系列高频真空干燥试验,分析研究不同高频真空干燥条件下干燥质量和干燥速度的变化规律,获得合理的高频真空干燥工艺基准;为了进一步减少试材表裂,干燥前对试材进行切口和过热蒸汽预处理。结果表明: 沿试材长度方向的中心位置切口和过热蒸汽预处理都能有效减少试材表裂,提高干燥质量。

关键词: 高频真空干燥, 人工林落叶松, 髓心方材, 切口处理, 过热蒸汽处理

Abstract:

A series of radio frequency/vacuum (RF/V) drying tests were conducted on boxed-heart square timber of plantation larch with cross section of 100 mm×100 mm. Drying processes under various RF/V conditions were analyzed in terms of drying quality and drying rate. Kerfing and superheated-steam pretreatment were introduced during the process in order to minimize the surface checks. High drying quality has been achieved with optimizing the drying conditions. The run-through kerf and superheated-steam pretreatment at the temperature of 105 ℃ could significantly reduce the surface check occurred during the drying.

Key words: radio frequency/vacuum (RF/V) drying, plantation larch, boxed-heart square timber, kerf pretreatment, superheated-steam pretreatment

中图分类号:

S781.71

李晓玲;高瑞清;构涛;张立宾;陈章景. 人工林落叶松髓心方材的高频真空干燥[J]. 林业科学, 2012, 48(9): 127-131.

Li Xiaoling;Gao Ruiqing;Gou Tao;Zhang Libin;Chen Zhangjing. Radio Frequency/Vacuum Drying for Boxed-Heart Square Timber of Plantation Larch[J]. Scientia Silvae Sinicae, 2012, 48(9): 127-131.

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[3]	李晓玲小林功黑田尚宏高瑞清. 日本柳杉高频真空干燥及防止开裂的研究(英文)[J]. 林业科学, 2005, 41(2): 106-111.

人工林落叶松髓心方材的高频真空干燥

Radio Frequency/Vacuum Drying for Boxed-Heart Square Timber of Plantation Larch

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