Magnetic particle-based super-hydrophobic coatings with excellent anti-icing and thermoresponsive deicing performance
Magnetic particle-based super-hydrophobic coatings with excellent anti-icing and thermoresponsive deicing performance
复制标题
具有优异防冰和热响应除冰性能的磁颗粒超疏水涂层
DOI：
10.1039/c5ta05277g
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发表时间：
2015-01-01
影响因子：
11.9
通讯作者：
Chen, Fengqiu
中科院分区：
文献类型：
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作者：
Cheng, Tiantian;He, Ren;Chen, Fengqiu
在超疏水涂层中引入磁性纳米颗粒(MNPs)作为热媒质，以达到防冰除冰的目的。合成了含氟环氧基团，将其与氨基修饰的Fe3O4纳米粒子混合，再与二乙烯三胺交联，制得了新型多功能磁性杂化涂料。通过扫描电子显微镜(SEM)、原子力显微镜(AFM)、X射线光电子能谱(XPS)和水接触角(WCA)等测试手段，系统地研究了杂化涂层的组成、形貌、表面结构和润湿性能。目标涂层表现出良好的超疏水性和润湿稳定性，这是由于表面形成了覆盖有氟化基团的微纳米分级表面粗糙度。低温(-15℃，相对湿度：50 5%)的WCA表明，超疏水表面可以将冻结时间从50 S延长到2878 S，而且其与冰的结合强度明显低于纯共聚涂层。更重要的是，磁性粒子突出的光热和磁热效应使涂层具有较长的延时结冰和热除冰性能。所制备的多功能超疏水表面具有优异的防冰和活性除冰性能，具有良好的实际应用前景。
Magnetic nanoparticles (MNPs) were introduced as the heat mediators in a superhydrophobic coating for anti-icing and deicing performance in this article. The fluorinated copolymer tethered epoxy groups were synthesized and mixed with amino modified Fe3O4 nanoparticles, and then crosslinked with diethylenetriamine to obtain novel multifunctional magnetic hybrid coatings. The compositions, morphologies, surface microstructure and wettability performance of the hybrid coatings were systematically investigated by the scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and water contact angle (WCA) measurements. The target coatings exhibited excellent superhydrophobicity and wetting stability driven by the formation of micronano hierarchical surface roughness covered with fluorinated groups. The low temperature (-15 C, RH: 50 5%) WCA showed that the superhydrophobic surface could delay the freezing time from 50 s to 2878 s. And the ice adhesion strength was significantly lower than that of a pure copolymer coating. More importantly, the outstanding photothermy and magnetothermal effects of the magnetic particles endowed the coatings with long time icing delay and thermal deicing properties. The fabricated multifunctional superhydrophobic surfaces with excellent anti-icing and active deicing properties will be promising for practical applications.