二氧化硅纳米颗粒/硅树脂复合超疏水功能涂层的制备和性能研究

doi:10.7517/j.issn.1674-0475.2011.05.372

影像科学与光化学 ›› 2011, Vol. 29 ›› Issue (5): 372-382.DOI: 10.7517/j.issn.1674-0475.2011.05.372

二氧化硅纳米颗粒/硅树脂复合超疏水功能涂层的制备和性能研究

王东^1,2, 贺军辉¹, 刘红缨²

1. 中国科学院理化技术研究所功能纳米材料实验室, 北京100190;
2. 中国矿业大学(北京), 北京100083

收稿日期:2011-05-30 修回日期:2011-07-08 出版日期:2011-09-23 发布日期:2011-09-23
通讯作者: 王东(1987-),男,硕士生,研究方向:功能纳米涂层;贺军辉,研究员,博士生导师,E-mail:jhhe@mail.ipc.ac.cn,电话:010-82543535.
基金资助:
中国科学院重要方向性项目(KGCX-YW-370),中国科学院光化学转换与功能材料重点实验室开放基金

Preparation and Properties of Superhydrophobic Composite Coatings of SiO₂ Nanoparticals/Silicone Resin

WANG Dong^1,2, HE Jun-hui¹, LIU Hong-ying²

1. Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences(CAS), Beijing 100190, P. R. China;
2. China University of Mining and Technology, Beijing 100083, P. R. China

Received:2011-05-30 Revised:2011-07-08 Online:2011-09-23 Published:2011-09-23

摘要/Abstract

摘要： 将二氧化硅纳米颗粒和硅树脂制成混合液,采用喷涂法(spray-coating)制备出了具备超疏水性的复合涂层.研究了二氧化硅、硅树脂不同含量配比对涂层疏水性能的影响,结果表明复合涂层的接触角随二氧化硅含量的增加而增加.在二氧化硅含量大于3%(质量分数)时,涂层显现超疏水性;当二氧化硅含量为3%(质量分数)、硅树脂含量为7%(质量分数)时,涂层与水的接触角达到151.6°,滚动角接近0°.通过扫描电子显微镜(SEM)观察涂层表面的微观结构,发现超疏水性的涂层具备微-纳复合阶层结构,类球状突起粒径在5μm左右,类球状突起上分布纳米团聚颗粒,直径约为50 nm.这种类似荷叶表面的微(纳复合阶层结构,结合硅树脂的低表面能,使得复合涂层具备了超疏水性能.

关键词: 喷涂, 硅树脂, 复合涂层, 超疏水性, 微-纳阶层结构, 接触角, 滚动角

Abstract: SiO₂ nanoparticals/silicone resin composite coatings were prepared by spray-coating,which exhibit superhydrophobicity.Effects of the contents of SiO₂ and silicone resin were investigated preliminarily on the hydrophobic properties of coatings.The results indicate that the water contact angle of composite coatings increases with increase of the content of SiO₂.When the mass percentage of SiO₂ is more than 3wt%,the composite coatings exhibit superhydrophobicity.Meanwhile the mass percentage of silicone resin is 7wt%,the composite coating has a high water contact angle of 151.6 and a small sliding angle of nearly 0.The surface morphologies of coatings were observed by scanning electron microscopy(SEM).It was found that the superhydrophobic composite coating has a rough micro-nanoscale hierarchical structure,with all near-spherical papillas(d≈5 μm) covered by aggregated nanoparticles(d≈50 nm).Such lotus leaf like micro-nano hierarchical structure in combination with the low surface energy of silicone resin renders the coating surface superhydrophobicity.

Key words: spray-coating, silicone resin, composite coating, superhydrophobicity, micro-nano hierarchical structure, contact angle, sliding angle

中图分类号:

王东, 贺军辉, 刘红缨. 二氧化硅纳米颗粒/硅树脂复合超疏水功能涂层的制备和性能研究[J]. 影像科学与光化学, 2011, 29(5): 372-382.

WANG Dong, HE Jun-hui, LIU Hong-ying. Preparation and Properties of Superhydrophobic Composite Coatings of SiO₂ Nanoparticals/Silicone Resin[J]. Imaging Science and Photochemistry, 2011, 29(5): 372-382.

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二氧化硅纳米颗粒/硅树脂复合超疏水功能涂层的制备和性能研究

Preparation and Properties of Superhydrophobic Composite Coatings of SiO₂ Nanoparticals/Silicone Resin

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二氧化硅纳米颗粒/硅树脂复合超疏水功能涂层的制备和性能研究

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Preparation and Properties of Superhydrophobic Composite Coatings of SiO₂ Nanoparticals/Silicone Resin