硅烷偶联剂改性水性UV木器面漆性能研究

水性UV木器涂料是一种新型的水性涂料,它将传统涂料和UV固化涂料进行有机结合从而改善其性能。相比于传统的UV木器涂料,水性UV木器涂料具有抗划伤性、耐化学性和柔韧性等优点,所以得到较快发展,但水性UV木器涂料也有很多不足。笔者用改良剂硅烷偶联剂KH560对水性UV木器涂料面漆进行改性,通过实验测试力学、光学和颜色等各方面性能,为改良水性UV涂料木器提供参考依据。结果表明,将试验所用木质基材面漆的质量固定为1.5 g,KH560质量分数为3%,烘箱温度设置为40℃,干燥时间为10 min,UV灯的数量为3盏,辐射时间1 min时,涂膜硬度和附着力分别达到H和1级。涂膜在单瓣豆木质基板的综合效果较佳,同时产生亚光效果,色差最小。面漆中KH560的含量继续增加,涂膜的附着力不变,硬度先升高而后降低,光泽度上升,色差增大。
Waterborne UV wood coating is a new type of water based coating which combines the traditional water based coatings and the UV curing coating. Compared with the traditional UV wood coatings, the modified coating has many advantages such as good scratch resistance, chemical resistance, flexibility. However, there are many deficiencies of waterborne UV curable wood coatings. Therefore, the silane coupling agent KH560 was used to modify the mechanical, optical and color performance of waterborne UV-curable wood surface finish, aiming at improving waterborne UV-curable coatings. The results showed that the coating hardness and adhesion reached H and 1 classes, respectively, on the conditions of 1.5 g fixed finish and 3% KH560, and under 40℃ temperature in the baking oven for 10 min, wherein the UV lamps were three and the radiation time was 1 min. The waterborne UV curable wood coating performance in the single bean wood substrate was good, at the same time it has the sub light effect and the minimum color difference. If the increase in KH560 content in topcoat continued, the wood coating adhesion was constant, the hardness firstly increased and then decreased, and the gloss and color difference increased