木材表面疏水涂层的制备及耐久性测试  

Preparation and Durability Test of Hydrophobic Coating on Wood Surface

作　　者：吴新宇 吴燕 徐颖异 孔璋倩 苏小卿 贾焕亮 WU Xinyu;WU Yan;XU Yingyi;KONG Zhangqian;SU Xiaoqing;JIA Huanliang(College of Furnishings and Industrial Design,Nanjing Forestry University,Nanjing 210037,China;Dehua TB New Decoration Material Co.,Ltd.,Huzhou 313200,China)

机构地区：[1]南京林业大学家居与工业设计学院,南京210037 [2]德华兔宝宝装饰新材股份有限公司,湖州313200

出　　处：《家具》2020年第1期19-22,共4页Furniture

基　　金：浙江省湖州市“南太湖精英计划”项目（[2018]2号）;南京林业大学2019年大学生创新创业训练计划项目（2019NFUSPITP0817,2019NFUSPITP0850）

摘　　要：为使木材涂层表面具备自清洁、防污、耐水的性能,并且提高涂层的耐久性能,使木质材料拥有更高的使用价值,本研究以紫外光固化水性木器涂料为改性对象,以硬脂酸为修饰剂,将纤维素纳米纤维(CNF)和纳米二氧化钛(TiO2)的配置成疏水复合材料,按照一定比例添加到紫外光固化水性木器涂料中并涂覆到杨木表面,制备出了接触角可达123.3°的涂层表面。采用耐磨性测试、耐老化性测试、耐腐蚀性测试对所制备样品表面进行耐久性测试,结果表明,处理后的样品表面耐久性有所增强,具备一定的抵抗环境介质作用的本领。紫外光固化技术与微纳米粗糙结构的修饰相结合,CNF/TiO2复合疏水材料在杨木表面构建了一层微纳米粗糙结构,与涂膜表面的-CH3疏水基团协同作用使得涂层具备疏水性并赋予涂层良好的机械耐久性和抵抗紫外线的能力。The wood material will have higher value in use if the coating on the surface of wood possesses the properties of self-cleaning,anti-fouling,water resistance, and high durability. The waterborne UV-cur-able coating was chosen as modification object,and stearic acid was used as modifier. The Cellulose Nanofiber(CNF)and Nano Titanium Dioxide(TiO2)were prepared into hydrophobic composite materi-als and added into the waterborne UV-curable coating in a certain proportion and sprayed on the surface of poplar wood. The contact angle of the surface of the coating was up to 123.3°. The wear resistance test,aging resistance test and corrosion resistance test were conducted to test the durability of the surface of the prepared sample. Combined with UV-curable technology and modification of micro-nano rough struc-ture,CNF/TiO2 composite hydrophobic material constructed a layer of micro-nano rough structure on the surface of poplar wood. In collaboration with the-CH3 hydrophobic group on the surface of the coating,the coating was hydrophobic and endowed with good mechanical durability and UV resistance.

关 键 词：疏水 纳米二氧化钛 纤维素纳米纤维 耐久性 

分 类 号：TS611[轻工技术与工程]