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Material Sciences 2025
基于有机硅氧烷交联结构的无氟耐磨疏水涂层的研究
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Abstract:
本文报道了一种新型疏水涂层的制备方法，该涂层通过端乙烯基聚二甲基硅氧烷(Vi-PDMS)与聚(二甲基硅氧烷-co-甲基氢硅氧烷) (PMHS)之间的硅氢加成反应形成具有稳定三维交联结构的涂层。通过傅立叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)和紫外可见分光光度计(UV-Vis)等多种表征技术，详细分析了涂层的物理化学性质。FTIR结果表明，反应前后化学基团的变化证实了硅氢加成反应的成功发生。涂层在最佳条件下的水接触角(WCA)达到115.56？，表现出良好的疏水性。进一步，通过漆膜磨耗仪测试了涂层的耐磨性能，结果表明，在CS-10F砂轮和500 g负载下，涂层能够承受1400转的磨损，显示出优异的耐磨性。此外，对涂层的化学稳定性、附着力及耐高温性能进行了评估，结果表明该涂层具备较好的综合性能。所制备的涂层不含氟，具有较强的耐磨性、绿色环保及简便的制备工艺，展现了广泛的应用潜力。
This paper reports the preparation of a novel hydrophobic coating, which is formed by a silicon-hydrogen addition reaction between vinyl-terminated polydimethylsiloxane (Vi-PDMS) and poly (dimethylsiloxane-co-methylhydrosiloxane) (PMHS), resulting in a stable three-dimensional crosslinked structure. The physicochemical properties of the coating were systematically analyzed using various characterization techniques, including Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and ultraviolet-visible spectroscopy (UV-Vis). FTIR analysis confirmed the occurrence of the silicon-hydrogen addition reaction by showing changes in the chemical functional groups before and after the reaction. The coating exhibited excellent hydrophobicity with a water contact angle (WCA) of 115.56？ under optimal conditions. Further wear resistance tests using a Taber abrasion tester showed that the coating could withstand 1400 cycles of abrasion with a CS-10F wheel under a 500 g load, demonstrating excellent wear resistance. Additionally, the chemical stability, adhesion, and high-temperature resistance of the coating were evaluated, revealing its overall superior performance. The developed coating is fluorine-free, possesses strong wear resistance, is environmentally friendly, and can be easily prepared, exhibiting broad potential for practical applications.
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