| 摘要: |
| 超疏水材料是一种具有防水、自清洁等功能的仿生材料，具有广阔的应用价值，但表面容易受到环境和机械作用影响而破坏，导致超疏水性能失效。针对此类实际问题，以改性环氧树脂和疏水型纳米氧化铝颗粒为原料，采用分层制备的方式，利用空气喷涂法制备出一种具有良好耐久性的超疏水纳米复合涂层，其接触角可以达到157.57°，滚动角达到2°。在机械耐久性方面，经历30次砂纸摩擦或者45次胶带黏附后，该涂层仍能保持超疏水性能，且与其它商业涂层相比具有更好的机械耐磨性。在化学耐久性方面，该涂层在酸碱溶液中浸泡100 min后仍具有良好的超疏水性能。综上，使用该体系制备的超疏水材料具有良好的耐久性能。 |
| 关键词: 超疏水 耐久性 改性环氧树脂 |
| DOI：10.11933/j.issn.1007-9289.20190202001 |
| 分类号:TG174.442;O647.5 |
| 基金项目:国家自然科学基金（51403235） |
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| Preparation and Durability of Modified Epoxy Resin-based Nano-alumina Superhydrophobic Coating |
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LV Jiajie, WU Binrui, XING Suli, LIU Jun, YANG Jinshui, JIANG Dazhi, PENG Chaoyi
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College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
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| Abstract: |
| With a wide potential application in many different fields, superhydrophobic surfaces have attracted much attention, while their surface structure can be easily damaged by environmental and mechanical effects and thereby causes superhydrophobic performance failure. To solve these practical problems, a robust superhydrophobic coating was fabricated with modified epoxy resin and oleophilic alumina NPs. Prepared by layered preparation method and air spraing method, the coating had a contact angle of 157.57° and a sliding angle of 2°. In terms of mechanical durability, the coating retained superhydrophobic properties after 30 times of sandpaper rubbing or 45 times tape peeling, exhibiting a better mechanical wear resistance than that of the commercial coatings (“Never-wet”). In terms of chemical durability, the coating still has good superhydrophobic property after being immersed in an acid or base solution for 100 min. It is concluded that superhydrophobic surfaces prepared by the materials system own good mechanical robustness. |
| Key words: superhydrophobic robustness modified epoxy resin |
