摘要
浸渍胶膜纸饰面细木工板(生态板之一)因其美观、环保和耐用等优点,已成为定制家具的主要材料。然而,在生产和使用过程中,浸渍胶膜纸饰面细木工板经常出现龟裂现象,影响其美观和使用性能。针对此问题,以重组装饰单板和三聚氰胺浸渍胶膜纸为研究对象,考察其对浸渍胶膜纸饰面细木工板耐龟裂性能的影响。研究发现:1)定量低于80 g/m^(2)的浸渍胶膜纸的抗拉性能明显优于定量高于80 g/m^(2)的浸渍胶膜纸;木纹纸比纯色纸表现出更优异的抗拉性能。与同定量的纯色纸相比,木纹纸的断裂伸长率和抗拉强度均有不同程度的提升。浸渍胶膜纸的抗拉性能直接影响浸渍胶膜纸饰面细木工板的耐龟裂性能。2)提升重组装饰单板的含水率至21%,在GB/T 17657—2022《人造板及饰面人造板理化性能试验方法》规定的耐龟裂测试特定温湿度条件下,浸渍胶膜纸饰面细木工板在24 h内无开裂现象,但不能在24 h以后仍保持稳定。3)水性有机硅树脂改性处理可构建双重防护机制,一方面显著降低重组装饰单板的收缩率,另一方面提升其横向抗拉性能,从而提高浸渍胶膜纸饰面细木工板的耐龟裂性能,并且能够在耐龟裂测试时间延长至72 h时仍保持稳定。
Surface decorated blockboard with impregnated paper has become a dominant material for custom furniture because of its attractive appearance,environmental friendliness,and durability.Nevertheless,during the process of production and in the middle of service,the board frequently develops cracks on the surface that impair both its aesthetics and performance.To address this issue,the effects of reconstituted decorative veneer and melamine-impregnated film paper were investigated on the crack resistance performance of film overlaid blockboard.The study revealed that impregnated film paper with a basis weight below 80 g/m^(2) exhibited significantly better tensile properties than paper heavier than 80 g/m^(2).Wood-grain paper outperforms solid-color paper in tensile behavior;compared with solid-color paper of the same basis weight,wood-grain paper showed increased elongation at break and higher tensile strength.Because the tensile properties of impregnated film paper directly determine the crack resistance of the decorated blockboard,these differences were critical.In addition,increasing the moisture content of the reconstituted decorative veneer to 21%prevented cracking in the decorated blockboard within the 24 hours specified in the crack resistance test under the temperature-humidity conditions defined by GB/T 17657-2022“Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels”;however,this protection was not consistent beyond 24 hours.Aqueous silicone resin modification established a dual protective mechanism:it significantly reduced the shrinkage of the reconstituted decorative veneer and simultaneously improved its transverse tensile properties,thereby enhanced the crack resistance of impregnated film paper-decorated blockboard.The modified system stayed stable up to 72 hours.
作者
张智彭
冯云
杨光耀
温霄艳
王倩
彭少刚
吴玉章
屈伟
ZHANG Zhipeng;FENG Yun;YANG Guangyao;WEN Xiaoyan;WANG Qian;PENG Shaogang;WU Yuzhang;QU Wei(Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China;Huajie Tulue Technology Co.,Ltd.,Shijiazhuang 050599,Hebei,China)
出处
《木材科学与技术》
北大核心
2025年第4期78-88,共11页
Chinese Journal of Wood Science and Technology
基金
中央级公益性科研院所基本科研业务费专项资金“耐候透明阻燃预警涂料制备及在古建中的应用”(CAFYBB2024MA022)。
作者简介
张智彭(2000-),男,硕士研究生。Email:zzp@caf.ac.cn;通讯作者:屈伟,男,副研究员。Email:wqu@caf.ac.cn。
