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首页> 外文期刊>Journal of Applied Polymer Science >Transparent and Durable SiO2-Containing Superhydrophobic Coatings on Glass
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Transparent and Durable SiO2-Containing Superhydrophobic Coatings on Glass

机译：玻璃上的透明耐用的SiO2超疏水涂层

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摘要

We fabricated novel superhydrophobic coatings based on SiO2 nanoparticles combined with NH2-terminated silicone (SN2) or SN2-modified polyurethane (SN2-prePU) by alternately spin-coating them onto glass slides. The final fabricated surface contained SN2/SiO2 or SN2-prePU/SiO2 bilayers. The conditions of spin-coating method were also explored. SN2-prePU with different SN2/prePU molar ratios were synthesized to study the influence of SN2 ratio on the water contact angles of ultimate spin-coated surfaces. The surface was found to be tunable from hydrophobic to superhydrophobic by choosing SN2-prePU with different SN2/prePU molar ratios or SN2 content. Water droplets easily rolled off on these superhydrophobic surfaces. Surfaces coated with SN2/SiO2 bilayers showed better transparency, whereas surfaces coated with SN2-prePU(2 : 1)/SiO2 bilayers exhibited better durability. Droplets of varied pH were prepared to test the anti-wettability of the coatings. Results showed that the as-coated surfaces had stable superhydrophobicity to droplets with pH values ranging from 1 to 14. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41500.
机译：我们通过将SiO2纳米颗粒与NH2封端的有机硅（SN2）或SN2改性的聚氨酯（SN2-prePU）组合使用，将它们交替旋涂到载玻片上，从而制造出新颖的超疏水涂层。最终制造的表面包含SN2 / SiO2或SN2-prePU / SiO2双层。还探讨了旋涂法的条件。合成了不同SN2 / prePU摩尔比的SN2-prePU，以研究SN2比对最终旋涂表面水接触角的影响。通过选择具有不同SN2 / prePU摩尔比或SN2含量的SN2-prePU，可以发现该表面可从疏水性变为超疏水性。水滴很容易在这些超疏水表面上滚落。涂有SN2 / SiO2双层的表面表现出更好的透明度，而涂有SN2-prePU（2：1）/ SiO2双层的表面表现出更好的耐久性。制备了各种pH值的液滴以测试涂层的抗湿性。结果表明，初涂表面对pH值为1至14的液滴具有稳定的超疏水性。（c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41500。

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