木材用透明涂料耐光性能的研究

郭洪武; 王金林; 李春生; 闫昊鹏

doi:10.19455/j.mcgy.2008.03.008

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木材用透明涂料耐光性能的研究
Lightfastness of Two Transparent Coatings for Wood
1. 北京林业大学材料科学与技术学院
2. 中国林科院木材工业研究所
2008年第3期页码：26-28
DOI： 10.19455/j.mcgy.2008.03.008

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[1]郭洪武,王金林,李春生,闫昊鹏.木材用透明涂料耐光性能的研究[J].木材工业,2008(03):26-28.

GUO Hong-wu1, WANG Jin-lin2, LI Chun-sheng2, et al. Lightfastness of Two Transparent Coatings for Wood[J]. China Wood Industry, 2008,(3):26-28.
[1]郭洪武,王金林,李春生,闫昊鹏.木材用透明涂料耐光性能的研究[J].木材工业,2008(03):26-28. DOI： 10.19455/j.mcgy.2008.03.008.

GUO Hong-wu1, WANG Jin-lin2, LI Chun-sheng2, et al. Lightfastness of Two Transparent Coatings for Wood[J]. China Wood Industry, 2008,(3):26-28. DOI： 10.19455/j.mcgy.2008.03.008.

摘要

以木材涂饰用水性双组分聚氨酯和丙烯酸清漆制备的游离膜为试材,利用氙光衰减仪进行辐射试验,研究游离膜的材色变化规律,并进行耐光性能评价。结果表明:聚氨酯和丙烯酸漆膜受光辐射均会发生变色,并且聚氨酯漆膜的光变色度更甚,主要表现在聚氨酯漆膜的色品指数显著增大,说明聚氨酯漆膜易发生黄化。

Abstract

Two different transparent coatings for wood products,polyurethane and acrylic varnishes,were selected to evaluate their lightfastness under laboratory conditions.Two films coated with the two varnishes were exposed under a Xenon-lamp attenuation instrument.After being exposed for 100 hours,it was found that color changed in both films.The color fading of the polyurethane film was more severe than that of the acrylic film.The chromaticity coordinates of the polyurethane film increased significantly.This indicated that the polyurethane film was more likely to etiolate than the acrylic film.