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林业科学 ›› 2002, Vol. 38 ›› Issue (5): 135-139.doi: 10.11707/j.1001-7488.20020522

• 论文及研究报告 • 上一篇    下一篇

刨花与胶粘剂界面结合强度的研究

李凯夫 陆仁书   

  1. 华南农业大学,广州510642;东北林业大学,哈尔滨150040
  • 收稿日期:1999-12-09 修回日期:1900-01-01 出版日期:2002-09-25 发布日期:2002-09-25

STUDY ON INTERFACE COMBINATION STRENGTH OF PARTICLES AND ADHESIVES

Li Kaifu,Lu Renshu   

  1. South China Agricultural University Guangzhou510642;Northeast Forestry University Harbin150040
  • Received:1999-12-09 Revised:1900-01-01 Online:2002-09-25 Published:2002-09-25

摘要:

界面结合强度是界面力学研究中的重要参量。建立可定量表征刨花与胶粘剂界面结合强度的测试技术,分析影响界面结合强度的因素,将界面微观特性与人造板宏观力学性能联系起来,从而实现制板工艺的优化控制具有重要意义。确立的微观力学模型可正确描述刨花与胶粘剂界面结合的情况。由有限元法分析可分离剪应力和正应力,从而论证了界面的破坏是由剪应力所致,结合薄弱处在受拉刨花受力一端的胶层界面处,确立的界面结合强度测试方法是可行的。

关键词: 刨花, 胶粘剂, 界面, 结合强度

Abstract:

Combination strength on interface is an important parameter in the mechanical research of interface. Building a testing system that is quantitatively characterizing the particles and adhesives interface combination strength, analyzing factors of influencing interface combination strength, integrating microcosmic specific property on interface with macroscopic mechanics function of artificial board, thus realize the optimization of control on board technology processing. The established microcosmic mechanics model correctly describes interface combination status of particles. Shearing stress and direct stress can be separated by limited unit law analysis, thus demonstrated the interface destruction is due to shearing stress. The end of glue layer interface of pulled particles is the weak point of combination. The established test method for interface combination strength is feasible.

Key words: Particles, Adhesives, Interface, Combination strength