包装用杨木胶合板表面超疏水处理及其性能研究  

Surface Superhydrophobic Treatment and Properties of Poplar Plywood for Packaging

作　　者：刘飞 朱方政 徐朝阳 LIU Fei;ZHU Fang-zheng;XU Zhao-yang(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China;Nanjing Jufeng Advanced Materials Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]南京林业大学材料科学与工程学院,南京210037 [2]南京聚锋新材料有限公司,南京210000

出　　处：《包装工程》2023年第5期1-7,共7页Packaging Engineering

基　　金：国家自然科学基金(32171706)。

摘　　要：目的提高胶合板尺寸稳定性及增强胶合板的疏水性,拓宽胶合板的应用领域和范围。方法将硅酸钠溶液与乙烯基三乙氧基硅烷共混形成不同物质的量之比的混合物,经搅拌、冷凝、再搅拌得到有机硅聚合物,然后浸渍处理胶合板,使用傅里叶红外光谱仪分析改性前后胶合板表面羟基含量及其改性机理;通过环境扫描电子显微镜表征改性胶合板表面的微观形貌;利用万能力学试验机探究改性前后胶合板力学性能;借助接触角测试仪比较改性前后胶合板的润湿特性,并计算其吸水率及吸水厚度膨胀率。结果有机硅氧烷成功地键合到胶合板的表面;改性前后胶合板力学性能无明显变化;以物质的量之比为2∶5的有机硅聚合物浸渍处理的胶合板的吸水率及厚度膨胀率较低;在接触角测试中,物质的量之比为2∶5的有机硅聚合物处理后的胶合板初始接触角达到156.8°,60 s后接触角依然有140.3°,始终保持超疏水状态。结论有机硅聚合物处理后胶合板的疏水性能及尺寸稳定性均有较大的提高。The work aims to improve the dimensional stability of plywood and enhance the hydrophobicity of plywood,so as to broaden its application field and scope.The sodium silicate solution was mixed with vinyl triethoxy silane to form a mixture of different ratios of substances.The organosilicon polymer was obtained by stirring,condensing and restirring and then the plywood was impregnated.The content of hydroxyl group on the surface of plywood before and after modification and its modification mechanism were analyzed by Fourier transform infrared spectrometer.The surface morphology of modified plywood was characterized by environmental scanning electron microscopy.Universal mechanical testing machine was used to explore the mechanical properties of plywood before and after modification.The wetting characteristics of the plywood before and after modification were compared with the contact angle tester,and the water absorption rate and thickness expansion rate were calculated.Organosiloxane was successfully bonded to the surface of plywood.The mechanical properties of the plywood had no significant change before and after modification.The water absorption rate and thickness expansion rate of the plywood treated under the ratio of substances of 2∶5 were lower.In the contact angle test,the initial contact angle of the plywood treated under the ratio of substances of 2∶5 reached 156.8°and was still 140.3°after 60 s,maintaining the superhydrophobic state.The hydrophobic properties and dimensional stability of the plywood treated with organosilicon polymer are improved greatly.

关 键 词：胶合板 表面防水处理 超疏水性 尺寸稳定性 

分 类 号：S784[农业科学—林学]