人造板微观结构的初步研究

<正>为了了解胶粘剂在人造板内部所处的状态和人造板构造对产品基本性能的影响,用扫描电子显微镜和立体光学显微镜观察了人造板的微观结构。对拍摄的照片(扫描电子显微镜)进行了初步讨论。作者认为不同的木材纹理切削表面具有不同的表面质量,胶合板胶层的厚度依单板的加工质量而变化,纤维板纤维“帚化”与纸张的纤维帚化有所不同。

A PRELIMINARY STUDY OF THE ULTRAMICROSTRUCTURE OF WOOD-BASED PANELS BY MEANS OF SEM

In order to understand the state of the glue in wood-based panels and the effect of their Microstructure on their basic characteristics, microstructure of wood-based panels has been studied by SEM and Stereo Optic Microscopy. This paper compares the main differences between the result obtained from optic and electron microscopies, explains the basic requirements of the specimen, and discusses about the photographs taken under the SEM. Studies reveal that different cut surfaces of wood grain give different surface qualities; Veneer quality of the plywood influences the thickness of the glue; the fiber brooming of fiberboard is some what different from that of paper; shear failure of plywood occurs usually both in the wood and in the interface between the glue and the wood.