...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Drvna industrija >Influence of Natural Surface Ageing on Bonding Quality of Thermally Modified Oak and Beech Wood
【24h】

Influence of Natural Surface Ageing on Bonding Quality of Thermally Modified Oak and Beech Wood

机译：天然表面老化对热改性橡木和山毛榉木粘接品质的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents the influence of natural surface ageing in indoor conditions on bonding quality of thermally modified wood used in structural laminated products. Two unmodified and thermally modified wood species were used for the experiment: oak and beech. Samples were planed and glued with MUF adhesive 2 hours, 1, 2, 6, 10, and 18 days after planing. Properties of laminated beech and oak beams, namely shear strength, delamination and contact angle, were measured in order to detect 1) suitability of wood species for lamination process and 2) influence of extended storage time after planing on properties of laminated wood. Generally, both native and thermally modified beech exhibited better results of shear strength and delamination and had lower contact angles compared to oak and thermally modified oak. Results of the delamination test (total delamination) indicate time dependence of surface ageing. Both unmodified and thermally modified beech may be successfully laminated at least up to 2 days after planing, whereas neither oak nor thermally modified oak are suitable for lamination process due to excessive delamination. Results of delamination may be related to contact angle measurements. Shear strength of glue lines did not show any influence on natural surface ageing. However, whereas beech and thermally modified beech samples exhibited almost the same values of the shear strength regardless of the duration of surface ageing, there is an obvious difference in shear strength of oak and thermally modified oak samples.
机译：本文介绍了天然表面老化在室内条件下对结构层压产品中使用的热改性木材粘合质量的影响。两个未修饰和热改性的木材物种用于实验：橡木和山毛榉。将样品凝聚并用MuF粘合剂2小时，1,2,6,10和18天粘合。测量层压山毛榉和橡木梁，即剪切强度，分层和接触角的性能，以检测木材物种对层压过程的适用性，2）延长储存时间在平面叠层木材的性能下的影响。通常，天然和热改性的山毛榉均显示出剪切强度和分层的更好的结果，与橡木和热改性的橡木相比具有较低的接触角。分层试验的结果（总分层）表明表面老化的时间依赖性。未改性和热改性的山毛榉可以在刨刨至少2天内成功层压，而橡木也不是由于过度分层而适用于层压过程。分层的结果可能与接触角测量有关。胶水线的剪切强度并未对天然表面衰老显示出任何影响。然而，诸如山毛榉和热改性的山毛榉样样本在表面老化的持续时间内表现出几乎相同的剪切强度值，橡木和热改性橡木样品的剪切强度存在明显差异。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号