超疏水表面具有特殊的微纳分级结构和自清洁、防污染等优异性能,国内外对其有着广泛的研究和应用。利用硝酸锌和氢氧化钾共沉淀的方法制备出海胆型微-纳分级结构的氧化锌(ZnO)粒子,然后用氟碳树脂衍生物对其进行疏水化接枝改性,最终制备了超疏水表面。利用X射线衍射仪对制备的产物进行物相分析,利用扫描电镜和动/静态接触角分析仪表征ZnO的微观形貌及疏水表面的接触角。结果表明,微纳分级结构的ZnO粒子经氟碳树脂改性后具有优异的疏水性能,所制备的疏水表面的水静态接触角能够达到(156±1)°,接触角滞后低至3°。该方法简单易行,适合工业化生产。
The surface of superhydrophobic has been researched and applied widely at home and abroad,because it has excellent performances such as special micro-nano hierarchical structures,self-cleaning and against contamination,etc.“Sea-urchin” micro-nano hierarchical ZnO particles was prepared with the coprecipitation method after mixing Zn(NO3)2·6H2O and KOH,then it was grafting modified with fluorocarbon polymer derivative (FEVE-IPTES),and superhydrophobic surface was prepared.The product was characterized by X-ray diffraction (XRD),the surface structure was characterized by scanning electron microscope (SEM),and the hydrophobicity of surface was characterized used contact angle analyzer.The results indicated that ZnO particles with micro-nanohierarchical had excellent hydrophobic property after being grafted by fluorocarbon polymer derivative,the static contact angle of hydrophobic surface can reach (156±1)°,and the contact angle hysteresis was as low as 3°.This method was simple and suitable for industrial production.
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基金资助
北京市自然科学基金(2152024)
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