单板冷冻预处理对杨木LVL性能的影响  

The Influence of Pre-freezing of Veneer on Properties of Poplar LVL

作　　者：顾东兰[1] 张毕蒙[1] 朱一辛[1] 

机构地区：[1]南京林业大学木材工业学院,南京市龙蟠路159号210037

出　　处：《林业科技开发》2007年第1期56-58,共3页China Forestry Science and Technology

基　　金：江苏省高校科研成果产业推进工程项目(项目编号:JHB06-09)。

摘　　要：将杨木单板置于-5^-30℃条件下进行冷冻预处理,对采用冷冻预处理的单板制造的杨木LVL进行静曲强度、弹性模量、吸水厚度膨胀率、24h吸水率测试。结果表明,对杨木单板进行冷冻预处理后,杨木LVL的吸水厚度膨胀率平均降低22.4%,而弹性模量、静曲强度和24h吸水率无显著变化。The poplar veneer was pre-freezed in the temperature range from -5℃ to -30℃, then was formed and hotpressed into LVL, and then the MOR , MOE, TS,24h water absorption of LVL were tested. The results show that the average TS decrease 22.4%, but MOE, MOR and 24h water absorption change not substantially after pre-freezing of poplar veneer.

关 键 词：杨木LVL 单板冷冻 性能测试 

分 类 号：TS653.2[轻工技术与工程]