面漆类型及表面色度值对数码涂装饰面人造板耐黄变性能的影响

Effect of Topcoat Type and Surface Chromaticity Value on Yellowing Resistance of Digitally Coated Decorative Wood-based Panels

对引起数码涂装饰面人造板黄变的原因进行探究,分析透明面漆类型及表面色度值(颜色和花纹图案不同)对饰面人造板耐黄变性能的影响规律。结果表明,较小涂布量的哑光面漆饰面人造板耐黄变性能要明显优于较大涂布量的高光面漆;相同涂布量下高光面漆和UV-3D仿生面漆饰面人造板耐黄变性能存在差异;色度值对饰面人造板耐黄变性能影响最大的是L值,表面色度值大的深色系饰面人造板耐黄变性能要明显优于较小色度值的浅色系饰面人造板。

This paper explores the reasons for causing yellowing of digitally coated decorative wood-based panels,and summarizes the influence of transparent topcoat type and surface chromaticity value(different color patterns)on the yellowing resistance of panels.The results showed that the yellowing resistance of matte panels with a low coating amount was significantly better than that of high-gloss panels with larger coating weight.There were difference in yellowing resistance between high-gloss panels and UV-3D biomimetic panels under the same amount of topcoat.The first influence of chromaticity value on the yellowing resistance of decorative panels was L value.The dark-colored decorative panels with larger surface chromaticity values were significantly better than light-colored ones with smaller chromaticity values.