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首页> 外文会议>49th International wood composites symposium >16. The proper durability assessment criterion of wood resins
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16. The proper durability assessment criterion of wood resins

机译：16.木质树脂的适当耐久性评估标准

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摘要

Wood and wood composites are susceptible to lose mechanical properties due to moisture exposure. Resins play an important role in determining the durability of wood based materials. Several wood resins were used in this study to bond veneers, and their performance before and after cyclic wetting and drying was observed. Various mechanical properties such as stiffness, strength and toughness were studied. Conventional methods of durability assessment in wood industry are related to modulus and ultimate load carrying capacity, while newer approaches suggest considering post-peak-load performance. The property degradation trends of solid wood as well as wood composite samples made out of the same wood species were analyzed statistically. To gain insight into the proper durability assessment criteria of wood resins, the retention percent of different properties were compared after up to 24 cycles of moisture exposure. Based on the results of this study, all properties significantly decline due to moisture exposure, however the rate of degradation considerably varies among different materials and properties. The pluses and minuses of each approach to study dry and wet durability are discussed.
机译：木材和木质复合材料很容易因受潮而失去机械性能。树脂在确定木质材料的耐久性方面起着重要作用。这项研究中使用了几种木材树脂来粘合饰面板，并观察了它们在循环润湿和干燥前后的性能。研究了各种机械性能，例如刚度，强度和韧性。木材工业中传统的耐久性评估方法与模量和极限承载能力有关，而较新的方法建议考虑峰值后的性能。统计分析了由相同木材物种制成的实木以及复合木材样品的性能下降趋势。为了深入了解木质树脂的适当耐久性评估标准，经过多达24个水分暴露循环后，比较了不同性能的保留百分比。根据这项研究的结果，由于暴露于水分，所有性能都会显着下降，但是降解速率因材料和性能的不同而有很大差异。讨论了研究干湿耐久性的每种方法的优缺点。

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  • 会议地点 Seattle WA(US)
  • 作者

    Babak Mirzaei; John Nairn; Arijit Sinha;

  • 作者单位

    Wood Science Engineering, Oregon State University, Corvallis, Oregon;

    Wood Science Engineering, Oregon State University, Corvallis, Oregon;

    Wood Science Engineering, Oregon State University, Corvallis, Oregon;

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  • 正文语种 eng
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