Wu Yan, Wu Xinyu, Yang Feng, Ye Jiaoyou
College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China.
Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
Polymers (Basel). 2020 Mar 17;12(3):668. doi: 10.3390/polym12030668.
In this paper, the waterborne UV lacquer product (WUV) was used as the main raw material, zinc oxide (ZnO) was used as the additive, and the stearic acid as the surface modifier. According to the method of spraying coating on the surface of poplar wood (, a simple and efficient preparation method was carried out to generate a super-hydrophobic surface and enhance the erosion resistance of the coating. By testing, the contact angle (CA) of water on the coating surface can reach 158.4°. The microstructure and chemical composition of the surface of coatings were studied by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The results showed that under acidic conditions, the non-polar long chain alkyl group of stearic acid vapor molecule reacted with the hydroxyl group in acetic acid, the metal ions of the ZnO were displaced to the stearic acid and generated globular zinc stearate (CHOZn). The hydrophobic groups -CH were grafted to the surface of zinc stearate (ZnSt2) particles and the micro/nano level of multistage flower zinc stearate coarse structure was successfully constructed on the surface of poplar wood, which endowed it with superhydrophobic properties. It is shown that the coating has good waterproof and erosion resistance.
本文以水性紫外光漆产品（WUV）为主要原料，氧化锌（ZnO）为添加剂，硬脂酸为表面改性剂。按照在杨木表面喷涂涂层的方法（此处原文括号内容不完整），开展了一种简单高效的制备方法，以生成超疏水表面并增强涂层的抗侵蚀性。经测试，涂层表面水的接触角（CA）可达158.4°。通过扫描电子显微镜（SEM）、傅里叶变换红外光谱（FT-IR）和X射线衍射（XRD）对涂层表面的微观结构和化学成分进行了研究。结果表明，在酸性条件下，硬脂酸蒸汽分子的非极性长链烷基与乙酸中的羟基发生反应，ZnO的金属离子被置换到硬脂酸上，生成球状硬脂酸锌（CHOZn）。疏水基团-CH接枝到硬脂酸锌（ZnSt2）颗粒表面，在杨木表面成功构建了多级花状硬脂酸锌粗结构的微/纳米级结构，赋予其超疏水性能。结果表明，该涂层具有良好的防水和抗侵蚀性能。
