涂饰工艺对硅酸盐改性毛白杨木材表面漆膜性能的影响  

Influence of coating technology on performance of coated wood surface

作　　者：邹阳 张梦莹 李萍 徐斌 张源 左迎峰[1] ZOU Yang;ZHANG Mengying;LI Ping;XU Bin;ZHANG Yuan;ZUO Yingfeng(School of Materials Science and Engineering,Central South University of Forestry&Technology,Changsha 410004,China;School of Furniture and Art Design,Central South University of Forestry&Technology,Changsha 410004,China;Xianning Public Inspection and Testing Center,Xianning 437000,China)

机构地区：[1]中南林业科技大学材料科学与工程学院,长沙410004 [2]中南林业科技大学家具与艺术设计学院,长沙410004 [3]咸宁市公共检验检测中心,咸宁437000

出　　处：《林业工程学报》2024年第5期169-179,共11页Journal of Forestry Engineering

基　　金：国家自然科学基金(32201485);湖南省教育厅科学研究重点项目(22A0177);湖南省教育厅科学研究优秀青年项目(21B0238);湖南省自然科学基金青年项目(2022JJ40863);湖湘青年英才计划(2023RC3159)。

摘　　要：为探究2种不同涂饰工艺对硅酸盐改性杨木表面的影响,使用水性聚氨酯清漆和水性丙烯酸清漆对比了底面合一和底面分开涂饰工艺,分析了刷涂次数对硅酸盐改性杨木和未改性杨木表面漆膜附着力、光泽度、材色、漆膜耐磨性、漆膜硬度的影响。结果表明,改性杨木径切面采用底面合一涂饰工艺,至多涂刷1遍(涂布量在140 g/m^(2)左右),未改性杨木径切面至少涂刷1遍(涂布量在140 g/m^(2)左右),木材表面可获得更好的漆膜附着力;改性杨木弦切面采用底面分开涂饰工艺,底漆1~2遍、面漆1~2遍(涂布量为140~240 g/m^(2)),未改性杨木弦切面底漆至少涂刷3遍、面漆至少涂刷3遍(涂布量在440 g/m^(2)左右),木材表面可获得更好的漆膜附着力。改性杨木光泽度比未改性杨木光泽度差,且改性杨木底面合一涂饰工艺至多涂刷3遍(涂布量在340 g/m^(2)左右),未改性杨木涂刷2~3遍(涂布量为240~340 g/m^(2)),表面获得较好的光泽度比(GZB);底面分开涂饰工艺,改性杨木底漆涂刷2~3遍、面漆涂刷2~3遍(涂布量为240~340 g/m^(2)),未改性杨木底漆涂刷1~2遍、面漆涂刷1~2遍(涂布量为140~240 g/m^(2)),表面获得较理想的光泽度比(GZB)。不同涂饰工艺涂饰改性杨木和未改性杨木表面,未改性杨木明度指数和红绿色品指数高于改性杨木,且随着涂刷次数增加变化不大。改性杨木黄蓝色品指数高于未改性杨木,且随着涂刷遍数的增加变化不大。改性杨木漆膜耐磨性比未改性杨木更好,改性杨木底面合一涂饰工艺涂刷1~2遍(涂布量为140~240 g/m^(2)),径切面获得较好漆膜耐磨性;弦切面涂刷2~3遍(涂布量为240~340 g/m^(2)),漆膜耐磨性较好。改性杨木漆膜硬度比未改性杨木更好,改性杨木底面合一涂饰工艺漆膜硬度优于底面分开涂饰工艺,径切面和弦切面至少涂刷4遍时漆膜硬度较好(涂布量在440 g/m^(2)左右)。漆膜与基材间结合的微观形�To investigate the effects of two different coating technologies on the surface of silicate-modified poplar wood(Populus tomentosa),this experiment used water-based polyurethane varnish and water-based acrylic varnish to compare the two coating processes,i.e.,bottom integration and bottom separation technologies.The effects of brushing times on the adhesion,glossiness,wood color,film wear resistance,and film hardness of silicate-modified poplar wood and unmodified poplar wood were analyzed.The results showed that,when the modified poplar wood was coated with the bottom integrated coating technology,with a maximum of one coat(coating amount of about 140 g/m^(2)),the unmodified poplar wood was coated with one coat(coating amount of about 140 g/m^(2)),resulting in better paint film adhesion on the wood surface.The modified poplar tangential section adopted the bottom separate coating technology,with one or two coats of primer and one or two coats of topcoat(with a coating amount of 140-240 g/m^(2)),for the unmodified poplar tangential sections,at least three coats of primer and three coats of topcoat(with a coating amount of around 440 g/m^(2))were applied,resulting in better paint film adhesion on the wood surface.The glossiness of the modified poplar wood was worse than that of the unmodified poplar wood and the modified poplar wood had a uniform coating process on the bottom surface,with a maximum of three coats(coating amount of about 340 g/m^(2))and two or three coats(coating amount of 240-340 g/m^(2))of the unmodified poplar wood.The surface achieved a good glossiness ratio(GZB)after applying the separate coating technology for the bottom surface,with two or three coats of modified poplar primer and two or three coats of topcoat(with a coating amount of 240-340 g/m^(2)),one or two coats of the unmodified poplar primer and one or two coats of topcoat(with a coating amount of 140-240 g/m^(2)).The surface brightness index and red-green index of the unmodified poplar wood were higher than those of the modified pop

关 键 词：杨木 浸渍改性 漆膜附着力 漆膜耐磨性 材色 

分 类 号：S781.7[农业科学—木材科学与技术]