刘恒阳,张蕾,史洪微,宋影伟,韩恩厚.铝合金表面氟硅烷改性纳米二氧化硅超疏水耐蚀涂层的制备和表征[J].表面技术,2025,54(2):202-212.
LIU Hengyang,ZHANG Lei,SHI Hongwei,SONG Yingwei,HAN Enhou.Preparation and Characterization of Fluorosilane-modified Nano-silica Superhydrophobic and Anti-corrosion Coatings on Aluminium Alloy[J].Surface Technology,2025,54(2):202-212 |
| 铝合金表面氟硅烷改性纳米二氧化硅超疏水耐蚀涂层的制备和表征 |
| Preparation and Characterization of Fluorosilane-modified Nano-silica Superhydrophobic and Anti-corrosion Coatings on Aluminium Alloy |
| 投稿时间：2024-02-01 修订日期：2024-05-16 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.02.017 |
| 中文关键词: 氟硅烷改性 二氧化硅 超疏水 微纳结构 稳定性 |
| 英文关键词:fluorosilane modification silica superhydrophobicity micro-nano structure stability |
| 基金项目:国家自然科学基金(52171089) |
| 作者 | 单位 |
| 刘恒阳 | 中国科学院金属研究所 中国科学院核用材料与安全评价重点实验室，沈阳 110016;中国科学技术大学 材料科学与工程学院，合肥 230026 |
| 张蕾 | 北京航空工程技术研究中心，北京 100076 |
| 史洪微 | 中国科学院金属研究所 中国科学院核用材料与安全评价重点实验室，沈阳 110016;沈阳工业大学 材料科学与工程学院，沈阳 110870 |
| 宋影伟 | 中国科学院金属研究所 中国科学院核用材料与安全评价重点实验室，沈阳 110016;中国科学技术大学 材料科学与工程学院，合肥 230026 |
| 韩恩厚 | 中国科学院金属研究所 中国科学院核用材料与安全评价重点实验室，沈阳 110016;中国科学技术大学 材料科学与工程学院，合肥 230026;广东腐蚀科学与技术创新研究院，广州 510530 |
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| Author | Institution |
| LIU Hengyang | CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China |
| ZHANG Lei | Beijing Aeronautical Engineering Technology Research Center, Beijing 100076, China |
| SHI Hongwei | CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China |
| SONG Yingwei | CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China |
| HAN Enhou | CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China;Institute of Corrosion Science and Technology, Guangzhou 510530, China |
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| 中文摘要: |
| 目的 制备得到具有超疏水特性的聚氨酯涂层。方法 以羟基丙烯酸树脂1198、固化剂N75-脂肪族聚异氰酸酯(六亚甲基二异氰酸酯缩二脲)、1H,1H,2H,2H-全氟辛基三乙氧基硅烷(PFOTES)和二氧化硅(SiO2)纳米颗粒为材料，采用简单的喷涂技术制备了一种耐用的铝合金表面超疏水涂层。首先制备了用于构筑超疏水涂层微纳结构的低表面能二氧化硅纳米颗粒(SiO2-PFOTES)。通过扫描电镜、透射电子显微镜、红外光谱仪、热重分析仪和表面分析手段对其微观结构和化学成分进行表征。将SiO2-PFOTES分散后加入1198树脂中，再加入N75固化剂获得铝合金表面超疏水涂层。采用接触角测量仪对材料表面润湿性进行测试。同时，对SiO2-PFOTES/聚氨酯(PU)涂层进行紫外线老化、盐雾试验测试。结果 当SiO2-PFOTES与PU质量比为1∶4时，所制备的超疏水涂层的水接触角为154°，滑动角小于5°。SiO2-PFOTES微纳结构层可在复合涂层表面形成明显的乳突状微纳结构，从而使涂层实现超疏水特性。此外，该涂层可有效排斥复杂混合物或有机液体，如牛奶、菜籽油和染料等。经过紫外线老化、盐雾试验，20 d后涂层仍具有优异的稳定性和超疏水性。结论 以PFOTES为改性剂，以SiO2纳米颗粒为填料构筑粗糙表面，在铝合金表面成功制备了具有稳定性的耐蚀超疏水复合涂层。 |
| 英文摘要: |
| Because of its relatively low corrosion potential, aluminum alloy is easily affected by electrochemical corrosion in humid environments. In order to improve the corrosion resistance of aluminum alloy, the organic coating is one of the more economical and effective methods to protect aluminum alloy. However, the function of traditional coatings is single, and it is difficult to meet the service need in complex environments. At present, the preparation of superhydrophobic films on aluminum alloy is considered to be a new and environmentally friendly technology. A durable superhydrophobic coating was prepared on aluminium alloy with hydroxyl acrylic resin 1198, curing agent N75-aliphatic polyisocyanate (hexamethylene-diisocyanate biuret), 1H,1H,2H,2H-perfluorooctane trethoxysilane (PFOTES) and silicon dioxide (SiO2) nanoparticles by simple spraying. Firstly, silica nanoparticles (SiO2-PFOTES) with low surface energy were prepared for constructing a micro-nano structure of superhydrophobic coatings. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to analyze the morphology of SiO2 and the coating surface before and after modification. Fourier transform infrared spectroscopy (FT-IR) was used to test the chemical composition of SiO2 before and after modification in the range of 4 000-450 cm−1. The structure of silica was characterized by X-ray diffraction instrument. The experimental results showed that the silane coupling agent containing double bonds was hydrolyzed to silanol monomer under the action of H+, and the silicone hydroxyl group on the surface of silanol monomer and the silicon hydroxyl group on the surface of silica nanoparticles were dehydrated and condensed to form Si—O—Si bond and grafted on the surface of silica nanoparticles. Then, SiO2-PFOTES was dispersed and added into 1198 resin, and then N75 curing agent was added to obtain super hydrophobic coatings on aluminium alloy. The surface wettability of the material was measured by a contact angle measuring instrument. At the same time, UV aging and salt spray tests were carried out on the SiO2-PFOTES/ PU coating. The experimental results showed that when the ratio of SiO2-PFOTES to PU was 1∶4, the water contact angle of the superhydrophobic coating was 154°, and the sliding angle was less than 5°. The micro-nano structure layer of SiO2-PFOTES could form obvious mastoid micro-nano structure on the surface of the composite coating, so that the coating could achieve super hydrophobic property. In addition, the coating effectively repelled complex mixtures or organic liquids such as milk, canola oil, and dye. The coating still had excellent stability and superhydrophobicity after a UV aging and salt spray test of 20 d. Compared with the salt spray test, the coating properties decreased less after UV aging. In ultraviolet aging, the ultraviolet light energy was large enough to break the chemical bonds in the resin, resulting in aging. The primary oxidation products generated by ultraviolet radiation were unstable, and the reaction further accelerated the aging of the resin. However, the addition of sufficient SiO2-PFOTES constructed a rough surface on the surface of the resin, forming a protective layer. The aging of resin under ultraviolet radiation was delayed. Using PFOTES as modifier and SiO2 nanoparticles as filler, a stable anti-corrosion and superhydrophobic composite coating on aluminium alloy was successfully prepared. It provides a new idea for the design and preparation of superhydrophobic coatings. |
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