咸阳师范学院 化学与化工学院 咸阳 712000
E-mail: zwh10430@sina.com
收稿:2026-05-03,
录用:2026-06-09,
网络首发:2026-07-14,
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张卫红, 李午戊, 张诗影, 曹静, 曹文丽. 基于环氧树脂相转变的耐磨超双疏表面的制备与表征. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26153.
Zhang, W. H.; Li, W. W.; Zhang, S. Y.; Cao, J.; Cao, W. L. Preparation and characterization of wear-resistant superamphiphobic surface based on epoxy resin phase transition. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26153.
张卫红, 李午戊, 张诗影, 曹静, 曹文丽. 基于环氧树脂相转变的耐磨超双疏表面的制备与表征. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26153. DOI: CSTR: 32057.14.GFZXB.2026.7663.
Zhang, W. H.; Li, W. W.; Zhang, S. Y.; Cao, J.; Cao, W. L. Preparation and characterization of wear-resistant superamphiphobic surface based on epoxy resin phase transition. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26153. DOI: CSTR: 32057.14.GFZXB.2026.7663.
既疏水又疏油的超双疏表面是疏液表面发展应用的重要趋势,然而,在受到外界摩擦时该类表面的微纳粗糙结构会因磨损而导致双疏性能迅速下降甚至丧失,向双疏粉体中加入高分子胶黏剂来构筑复合涂层是提高双疏表面耐磨性最为常用的方法,但往往由于双疏粉体会被胶黏剂包埋而效果不佳.本工作在自主合成出性能较佳的超双疏纳米粉体的基础上,利用溶解于良溶剂中的高分子胶黏剂加入到不良溶剂中会发生相转变而呈现出球状形貌的性质,将环氧树脂溶液滴入分散有超双疏纳米粉体的不良溶剂中,引发相转变后再通过超声处理促使双疏纳米粉体在环氧树脂相转变液滴表面紧密包裹形成细腻稳定的Pickering乳液滴,而后经喷涂固化得到由多层核壳微球组成的超双疏涂层. 双疏粉体处于核壳微球表面保证了涂层的双疏性能不因胶黏剂存在而下降,多层自相似结构又赋予了涂层较好的耐磨性. 经测试,厚度60 μm左右的涂层可在负重200 g砝码情况下耐400#砂纸表面摩擦60个循环(总行程约1650 cm)后仍保持较佳的超疏水性和一定程度的疏油性. 该方法原则上可以适用于任何能在不良溶剂中发生相转变的的高分子胶黏剂,为耐磨超疏水/超双疏涂层的制备及应用提供了借鉴方向.
Superamphiphobic surfaces that are both hydrophobic and oleophobic represent an important trend in the development and application of liquid-repellent surfaces. However
when subjected to external friction
the micro-nano rough structure of such surfaces causes a rapid decline or even loss of their superamphiphobic properties owing to wear. The addition of high-molecular-weight adhesives to superamphiphobic powders to construct composite coatings is the most commonly used method for enhancing the wear resistance of superamphiphobic surfaces. However
the effect is often not good because the superamphiphobic powder can be embedded in the adhesive. To address this issue
in this study
superamphiphobic nanopowders with superior performance were synthesized. Then
taking advantage of the property that high-molecular-weight adhesives dissolved in good solvents undergo phase transition and form spherical morphologies when added to poor solvents
an epoxy resin solution was dropped into a poor solvent in which superamphiphobic nanopowders were dispersed to trigger the phase transition. Subsequent ultrasonic treatment promoted the tight coating of superamphiphobic nanopowders on the surface of epoxy resin phase-transition droplets
forming fine and stable Pickering emulsion droplets. A superamphiphobic coating composed of multiple core-shell microspheres was obtained after spraying and curing. The superamphiphobic powder was located on the surface of the core-shell microspheres
ensuring that the superamphiphobic properties of the coating did not decline in the presence of the adhesive. The multi-layer self-similar structure also endowed the coating with good wear resistance characteristics. Tests showed that a coating with a thickness of approximately 60 µm could withstand 60 cycles of friction on a 400# sandpaper surface under a 200-g weight without significant loss of superhydrophobicity and retained a certain degree of oleophobicity. This method can be applied to any polymer adhesive that undergoes phase transformation in poor solvents
providing a reference for the preparation and application of wear-resistant superhydrophobic/superamphiphobic coatings.
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