Research Progress in Self-healing Superhydrophobic Surfaces
ZHOU Ying1, XIAO Liji1, YAO Li1,2, XU Zushun1,2
1 Hubei Collaborative Innovation Center for Advanced Organic Chemical materials, Hubei University, Wuhan 430062 2 Key Laboratory for the Green Preparation and Application of Functional materials of ministry of Education, Hubei University, Wuhan 430062
Abstract: Superhydrophobic materials are defined as a kind of materials with water static contact angle of 150° or higher and sliding angle of less than 10°. The super hydrophobic properties of the materials are derived from two aspects. On the one hand, it is difficult for water droplets to spread on the surface of the materials because of the existence of low-surface-energy substances. On the other hand, the rich hierarchical micro/nanostructures enable the formation of an“air cushion” between the solid and liquid phases, which further reduces the solid-liquid interface. Accordingly, the superhydrophobic materials are endowed with special functions like self-cleaning, anti-fouling, corrosion resistant, anti-icing, drag-reduction, anti-adhesion, oil/water separation, water directional collection, etc. Additionally, materials with anti-adhesion, oil-water separation, water collection can be also achieved based on superhydrophobic materials. Unfortunately, superhydrophobic materials are highly susceptible to environmental hazards such as chemical etching, scratch and abrasion, resulting in loss of low-surface-energy components or destruction of hierarchical structures, eventually leads to the decline or loss of super water-repellency. To solve these problems, durable superhydrophobic materials are proposed, which can be achieved mainly by two approaches, one is to design superhydrophobic materials with high abrasive resistance, in purpose of minimizing friction or wear damage to chemical components or micro-nanoscale topography. The other is to construct self-healing superhydrophobic materials, for the sake of repairing the damage caused by friction and wear on the surface component or structure in time, and restoring the superhydrophobic property of the material. The former shows certain limitation in selection of wearproof materials because of the demand for introducing high wear-resistant material. more attentions have been paid on the latter owing to its university. Generally, there are two approaches for fabrication of self-healing superhydrophobic materials. Specifically speaking, the first approach is constructing the superhydrophobic system capable of automatically complement the lost chemical composition by low-surface-energy substance. Concerning the absence of simple hydrophobic components timely supplement of surface components with low surface energy can realize the restoration of super-hydrophobicity by taking advantage of self-migration and rearrangement of this material on surface. For example, graft fluorinated groups to the bulk materials, take the micropores or microcapsules of the material as storage sites for low-surface-energy substances, etc. Anot-her approach to repair severely crushed microstructures and damaged surface chemistry involves design of superhydrophobic system capable of reconstructing hierarchical micro/nanostructures, such as introducing hydrophobic particles, preparing all-in-one coatings, imitating snakeskin-like shedding, utilizing shape memory polymer, etc. In this review,we summarize the recent progress of self-healing superhydrophobic materials, elaborate the design idea, effect of hydrophobicity and self-healing mechanism of typical self-healing superhydrophobic systems. We also point out the challenges and prospects in self-healing superhydrophobic field, in order to provide references for fabrication of long-term superhydrophobic materials for widespread applications.
作者简介: 周莹,2016年6月毕业于湖北大学,获得工学学士学位。现为湖北大学材料科学与工程学院研究生,目前主要研究领域为自修复超疏水材料。姚丽,湖北大学材料科学与工程学院讲师,硕士研究生导师。2007年7月硕士毕业于湖北大学化学与材料科学学院,2011年7月在中山大学化学与化学工程学院获得博士学位。2012年7月入职湖北大学材料科学与工程学院,主要从事自修复材料、超疏涂层方面的研究工作。现主持国家自然科学基金项目1项,参与国家自然科学基金项目3项,已发表论文10余篇,包括Journal of materials Chemistry、Polymer、《高分子学报》等,并申请专利1项。徐祖顺,教授,博士研究生导师,湖北大学“秦园学者”特聘教授,湖北省政府专项津贴专家。主要从事乳液聚合及聚合物乳液、功能性高分子微球、耐高温高分子材料、生物医用材料、环境友好型涂料及胶黏剂等领域的研究。近年来,承担国家、省部级科研项目多项,在Biomateirals、macromolecules等国内外刊物上发表论文200多篇,出版学术专著2部,申请发明专利多项。研制开发的多种产品已转让企业生产,产生了良好的经济效益和社会效益。
引用本文:
周莹, 肖利吉, 姚丽, 徐祖顺. 自修复型超疏水材料研究进展[J]. 材料导报, 2019, 33(7): 1234-1242.
ZHOU Ying, XIAO Liji, YAO Li, XU Zushun. Research Progress in Self-healing Superhydrophobic Surfaces. Materials Reports, 2019, 33(7): 1234-1242.
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2019, Vol. 33 
