测定胶在刨花表面上覆盖率和胶量的方法

一、前言在刨花板中,胶粘剂是以细小的胶滴分布在刨花表面上,刨花表面胶滴的大小和分布的均匀对刨花板的质量至关重要。自1960年以来,胶在刨花表面的分布问题逐渐为人们所重视,并且开展了测定方法的研究。据报道,测定方法大致有几种。各种测定方法是以测定胶的覆盖率或胶量来量度刨花表面胶的分布均匀性。并且受刨花几何形态和刨花大小的限制。本文提出图象法,是将试样或标准件用彩色反转片照相,把试样转变为图象,应用微机图象处理法测定刨花表面胶的覆盖率。对测定覆盖率后的图象进一步使用分光光度计测定图象的光密

DETERMINING RESIN LOVERAGE AND RESIN AMOUNT ON WOOD CHIP SURFACES

In this paper, a new method is described for determining the resin distribution on wood chip surfaces. A liquid UF resin was stained into red with rhodamin B. for spraying on the chip surfaces. The samples were photographed with color positive films used as a image. The percentage of resin coverage on the chip surfaces was obtained through a image processing method. A spectrophotometer was used to determine resin content by means of comparision sample image to standard image. The advantage of image method is not related with size and geometrical shape of wood chip and can be used to determine both the percentage of resin coverage and resin content on the same surface of wood chip. In this pater it is proposed that the image processing might be furt her developed for determining the three dimensional resin distribution on the wood chip surfaces. It is significant to develop resin distribution idea and complete method for determining resin distribution.