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首页> 外文会议>2004 TAPPI decorative amp; industrial laminates symposium >Dimensional Stability of Particleboard and MDF for Use as Substrates for Lamination
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Dimensional Stability of Particleboard and MDF for Use as Substrates for Lamination

机译：用作层压基材的刨花板和MDF的尺寸稳定性

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摘要

Particleboard and Medium Density Fiberboard (MDF) are composite products primarily composed of wood particlesrnand fibers, bonded with adhesives, and often modified with other additives. Both composites display uniformrnthickness, resistance to cracking and splitting, and are free of voids and surface imperfections, which make themrnideal substrates for lamination. Wood swells and contracts depending on the amount of moisture in the board, andrnlaminators should follow certain guidelines when selecting substrates for lamination. The effects of moisturernchanges in the panels can be minimized with proper storage and handling as well as with balanced construction tornminimize warp. The impact of moisture changes on the dimensional stability of panels can be described by severalrnstandardized test methods, which include various cycles of exposure to temperature and moisture extremes. Therninfluence of adhesive type on several of these methods is described. Different adhesive families are shown tornperform better in different types of tests, suggesting that the panel manufacturers may choose one type or anotherrndepending on the test method included on the performance requirements they need to meet for each application.
机译：刨花板和中密度纤维板（MDF）是主要由木材颗粒和纤维组成的复合产品，通过粘合剂粘合，并经常用其他添加剂进行改性。两种复合材料均具有均匀的厚度，抗开裂和抗裂性，并且没有空隙和表面缺陷，这使它们成为理想的层压基材。木材膨胀和收缩取决于木板中的水分含量，层压机在选择层压基材时应遵循某些准则。通过适当的存储和处理以及平衡的结构以最小化翘曲，可以使面板中水分变化的影响最小化。湿度变化对面板尺寸稳定性的影响可以通过几种标准化的测试方法来描述，其中包括暴露于温度和极端湿度的各种循环。描述了粘合剂类型对这些方法中的几种的影响。在不同类型的测试中，不同的胶粘剂系列表现出更好的性能，这表明面板制造商可以根据每种应用所需的性能要求所包括的测试方法，选择一种或另一种。

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