将二氧化硅纳米颗粒和硅树脂制成混合液,采用喷涂法( spraycoating)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5 μm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.
参考文献
| [1] | 贺军辉;刘湘梅 .超亲水的自清洁SiO2防雾涂层及其制备方法[P].中国专利,101 538 124A,2009-09-23. |
| [2] | Onda T;Shibuichi S;Tsujii K et al.Super-water-repellent fractal surfaces[J].Langmuir,1996,12(09):2125-2127. |
| [3] | Barthlott W;Neinhuis C .Purity of the sacred lotus, or escape from contamination in biological surfaces.[J].Planta,1997(1):1-8. |
| [4] | 刘湘梅,贺军辉.防雾技术的研究进展--从表面工程到功能表面[J].化学进展,2010(02):270-276. |
| [5] | Xin Du;Xiangmei Liu;Hongmin Chen .Facile Fabrication of Raspberry-like Composite Nanoparticles and Their Application as Building Blocks for Constructing Superhydrophilic Coatings[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2009(21):9063-9070. |
| [6] | Liu XM;Du X;He JH .Hierarchically structured porous films of silica hollow spheres via layer-by-layer assembly and their superhydrophilic and antifogging properties[J].Chemphyschem: A European journal of chemical physics and physical chemistry,2008(2):305-309. |
| [7] | Liu XM;He JH .Hierarchically structured superhydrophilic coatings fabricated by self-assembling raspberry-like silica nanospheres[J].Journal of Colloid and Interface Science,2007(1):341-345. |
| [8] | Du, X.;He, J. .Hierarchically mesoporous silica nanoparticles: Extraction, amino-functionalization, and their multipurpose potentials[J].Langmuir: The ACS Journal of Surfaces and Colloids,2011(6):2972-2979. |
| [9] | Xin Du;Xiaoyu Li;Junhui He .Facile Fabrication of Hierarchically Structured Silica Coatings from Hierarchically Mesoporous Silica Nanoparticles and Their Excellent Superhydrophilicity and Superhydrophobicity[J].ACS applied materials & interfaces,2010(8):2365-2372. |
| [10] | Li, X.;Du, X.;He, J. .Self-cleaning antireflective coatings assembled from peculiar mesoporous silica nanoparticles[J].Langmuir: The ACS Journal of Surfaces and Colloids,2010(16):13528-13534. |
| [11] | XinDu;JunhuiHe .A Self-Templated Etching Route to Surface-Rough Silica Nanoparticles for Superhydrophobic Coatings[J].ACS applied materials & interfaces,2011(4):1269-1276. |
| [12] | 赵宁,卢晓英,张晓艳,刘海云,谭帅霞,徐坚.超疏水表面的研究进展[J].化学进展,2007(06):860-871. |
| [13] | Holloway P J.Plant cuticles:physicochemical characteristics and biosynthesis[A].Berlin,Germany,1994:1-13. |
| [14] | Koch, K;Bhushan, B;Jung, YC;Barthlott, W .Fabrication of artificial Lotus leaves and significance of hierarchical structure for superhydrophobicity and low adhesion[J].Soft matter,2009(7):1386-1393. |
| [15] | Shutao Wang;Lei Jiang .Definition of Superhydrophobic States[J].Advanced Materials,2007(21):3423-3424. |
| [16] | Cassie A B D .Contact angle[J].Discussions of the Faraday Society,1948,3:11-15. |
| [17] | Hare E F;Shafrin E G;Zisman W A .Properties of films of adsorbed fluorinated acids[J].Journal of Physical Chemistry,1954,58:236-239. |
| [18] | Rao AV;Latthe SS;Nadargi DY;Hirashima H;Ganesan V .Preparation of MTMS based transparent superhydrophobic silica films by sol-gel method[J].Journal of Colloid and Interface Science,2009(2):484-490. |
| [19] | Bharat Bhushan;Yong Chae Jung .Natural and biomimetic artificial surfaces for superhydrophobicity, self-cleaning, low adhesion, and drag reduction[J].Progress in materials science,2011(1):1-108. |
| [20] | Wenzel R N .Resistance of solid surfaces to wetting by water[J].Industrial and Engineering Chemistry,1936,28:988-994. |
| [21] | Geoff R. Willmott;Chiara Neto;Shaun C. Hendy.An experimental study of interactions between droplets and a nonwetting microfluidic capillary[J].Faraday discussions,2010:233-245. |
| [22] | 刘志新,杜鑫,贺军辉,何勇,张林.合成条件对径向有序介孔二氧化硅中空亚微米球的形貌和结构的影响[J].影像科学与光化学,2010(06):442-456. |
| [23] | 郭志光,周峰,刘维民.溶胶凝胶法制备仿生超疏水性薄膜[J].化学学报,2006(08):761-766. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%