超疏水改性玄武岩<strong>/</strong>环氧涂层的制备及防护性能研究

doi:10.11902/1005.4537.2024.006

中国腐蚀与防护学报

2024, Vol. 44

Issue (6): 1476-1484 CSTR: 32134.14.1005.4537.2024.006 DOI: 10.11902/1005.4537.2024.006

研究报告

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超疏水改性玄武岩/环氧涂层的制备及防护性能研究

曹京宜¹, 赵伊¹, 刘岩硕², 方志刚¹, 荆远², 李亮¹, 孟凡帝²(

)

1.中国人民解放军92228部队北京 100072
2.东北大学材料科学与工程学院沈阳 110819

Preparation and Protective Properties of Superhydrophobic Modified Basalt/epoxy Coatings

CAO Jingyi¹, ZHAO Yi¹, LIU Yanshuo², FANG Zhigang¹, JING Yuan², LI Liang¹, MENG Fandi²(

)

1. Unit 92228, People's Liberation Army, Beijing 100072, China
2. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China

引用本文:

曹京宜, 赵伊, 刘岩硕, 方志刚, 荆远, 李亮, 孟凡帝. 超疏水改性玄武岩/环氧涂层的制备及防护性能研究[J]. 中国腐蚀与防护学报, 2024, 44(6): 1476-1484.
Jingyi CAO, Yi ZHAO, Yanshuo LIU, Zhigang FANG, Yuan JING, Liang LI, Fandi MENG. Preparation and Protective Properties of Superhydrophobic Modified Basalt/epoxy Coatings[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(6): 1476-1484.

全文: PDF(17912 KB) HTML

摘要:

通过碱刻蚀在玄武岩鳞片表面构建微纳结构，在硅烷偶联剂的作用下将纳米ZnO包覆在刻蚀玄武岩表面，同时结合低表面能物质硬脂酸修饰，制备出超疏水、防腐抗菌功能一体化的复合涂层。结果表明，超疏水改性玄武岩/环氧涂层具有较大的水接触角(152°左右)；硬脂酸的修饰延迟了ZnO光催化反应的发生和活性氧物质的释放，从而延迟了抗菌性能表达。从超疏水表面憎水机制和避免短期内涂层附近细菌的大量死亡两个角度实现了复合涂层表面防黏附功能；在3.5% NaCl溶液中浸泡14 d后，超疏水涂层的涂层电阻高于环氧涂层2个数量级，说明其对腐蚀介质具有最优异的阻隔性能。

关键词 ：超疏水, ZnO, 玄武岩, 防腐, 抗菌

Abstract：

Micro-nano structures were constructed on basalt flakes by alkali etching. Then nanosized ZnO-particulates were coated on the modified basalt flakes in assistance with silane coupling agent and stearic acid modifying agent. A super-hydrophobic, anti-corrosion and antibacterial composite coating consisted of basalt@ZnO and epoxy was prepared on Q235 carbon steel. The results show that the superhydrophobic basalt@ZnO/epoxy coating has a large water contact angle (approximately 152°). The modification of stearic acid could delay the occurrence of photocatalytic reaction and the release of reactive oxygen species, thus delaying the expression of antibacterial properties of ZnO. The anti-bacterial adhesion function of the composite coating is realized from two aspects: the hydrophobic mechanism of the superhydrophobic surface and avoiding the mass death of bacteria near the coating in a short time. After immersion in 3.5% NaCl solution for 14 d, the corrosion resistance of the superhydrophobic coating is 2 orders of magnitude higher than that of the plain epoxy coating, indicating that superhydrophobic basalt@ZnO/epoxy coating has superior barrier properties against corrosive media.

Key words： superhydrophobic ZnO basalt anticorrosion antibacterial

收稿日期: 2024-01-03 32134.14.1005.4537.2024.006

ZTFLH:

TG174

基金资助:国家自然科学基金(52271052);国家自然科学基金(U20A20233)

通讯作者: 孟凡帝，E-mail：fandimeng@mail.neu.edu.cn，研究方向为海洋腐蚀与防护

Corresponding author: MENG Fandi, E-mail: fandimeng@mail.neu.edu.cn

作者简介: 曹京宜，女，1972年生，研究员

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https://www.jcscp.org/CN/10.11902/1005.4537.2024.006 或 https://www.jcscp.org/CN/Y2024/V44/I6/1476

图1 添加3种不同鳞片的环氧涂层的SEM图像

图2 4种鳞片的傅里叶红外光谱

图3 TZEB鳞片的XPS光谱

图4 4种玄武岩鳞片的水接触角

图5 EP、TEB/EP和TZEB/EP涂层与PAO1共培养7 d和14 d的平板计数结果

图6 EP、TEB/EP和TZEB/EP涂层在PAO1溶液中浸泡3、7和14d后的活死细菌染色图像

图7 EP、TEB/EP和TZEB/EP涂层在PAO1溶液中服役14 d后的表面SEM图像

图8 EP、TEB/EP和TZEB/EP涂层在3.5%NaCl溶液中浸泡21 d后的EIS结果

图9 3种测试涂层EIS拟合的等效电路图

图10 EP、TEB/EP和TZEB/EP涂层电阻(Rc)的变化曲线

图11 涂覆EB/EP、TEB/EP和TZEB/EP复合涂层的Q235碳钢在浸泡14 d后的SEM图像

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