Abstract It is well known that the resin content within a particleboard influences the extent of the surface covered with adhesive and thus the properties of particleboards produced. The purpose of this research was to determine how the resin content and particle size class influence the surface of particle covered with the adhesive. For that purpose, wood particles used for particleboard production were used. Particles were blended with a UF adhesive with 0.05% of fluorescent dye added prior to blending and subsequently exposed to a resin curing temperature of 180°C. The resin content was varied between 7.5 and 12.5%. The adhesive surface coverage was determined using a microscope with a fluorescent light source and a CCD camera. The results showed that the surface coverage increased with increasing resin content and increasing wood particle size.

中文翻译：

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树脂含量对涂胶表面的影响

摘要 众所周知，刨花板中的树脂含量会影响粘合剂覆盖的表面程度，从而影响所生产刨花板的性能。本研究的目的是确定树脂含量和粒度等级如何影响被粘合剂覆盖的颗粒表面。为此，使用了用于刨花板生产的木屑。在混合之前将颗粒与添加了 0.05% 荧光染料的 UF 粘合剂混合，随后暴露于 180°C 的树脂固化温度。树脂含量在 7.5% 和 12.5% 之间变化。使用具有荧光光源和 CCD 照相机的显微镜测定粘合剂表面覆盖率。结果表明，表面覆盖率随着树脂含量的增加和木材粒度的增加而增加。