Cuprous oxide nanoparticles (Cu₂O NPs), phenol formaldehyde (PF) resin, and stearic acid (STA) were used to fabricate hierarchical core/shell structures to endow wood with superhydrophobic function, in which the preparation of Cu₂O NPs and the synthesis of PF were carried out simultaneously in one system. The Cu₂O NPs with the shape of a symmetrical tetrahexahedron were prepared in this work, and this novel shape is beneficial for creating a superhydrophobic surface. A relatively rough structure in micro/nanoscale was formed on the wood surface after being sprayed with PF@Cu₂O coating, which played a vital role in the fabrication of superhydrophobic wood surfaces, as expected. Morphological analysis and surface free energy calculations verified that STA reduced the surface free energy. Application of 12 layers of PF@Cu₂O coating followed by 2 h immersion in STA ethanol solution produced wood surfaces with low water permeability and high water contact angles of 153.3°, 153.2°, 150.5° on cross, radial, and tangential sections, respectively. Abrasion tests coupled with subsequent exposure to acidic and alkaline conditions indicated that the coating was resistant to both mechanical wear and chemical degradation. This two-step coating strategy used inexpensive ingredients and could have potential to application as water repellency protection of wood timber.

使用氧化亚铜纳米颗粒（Cu ₂ O NPs），酚醛树脂（PF）树脂和硬脂酸（STA）来制造分层的核/壳结构，赋予木材超疏水功能，其中制备了Cu ₂ O NPs和PF的合成在一个系统中同时进行。在这项工作中制备了具有对称四六面体形状的Cu ₂ O NP，这种新颖的形状有利于产生超疏水表面。PF @ Cu ₂喷涂后在木材表面形成了微米/纳米级的相对粗糙的结构如预期的那样，O涂层在超疏水性木质表面的制造中起着至关重要的作用。形态分析和表面自由能计算证实了STA降低了表面自由能。涂覆12层PF @ Cu ₂ O涂层，然后在STA乙醇溶液中浸泡2 h，所制得的木材表面的水渗透率低，并且在横截面，径向和切向截面上的水接触角分别为153.3°，153.2°，150.5°，分别。磨损测试以及随后暴露于酸性和碱性条件下表明，该涂层耐机械磨损和化学降解。这种两步涂覆策略使用廉价的成分，并且可能有潜力用作木材的防水保护。