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    • 2. 发明授权
    • Highly durable hydrophobic coatings and methods
    • 高度耐用的疏水涂层和方法
    • US06743516B2
    • 2004-06-01
    • US09921303
    • 2001-08-03
    • Nestor P. MurphyRudolph H. Petrmichl
    • Nestor P. MurphyRudolph H. Petrmichl
    • B32B2520
    • C03C17/009B05D1/185B05D1/60C03C17/42C03C2217/213C03C2217/76C03C2218/152C09D4/00C09D5/002Y10T428/31612Y10T428/31663C08G77/04
    • Substrates have a hydrophobic surface coating comprised of the reaction products of a chlorosilyl group containing compound and an alkylsilane. Most preferably the substrate is glass. In one preferred form of the invention, highly durable hydrophobic coatings may be formed by forming a silicon oxide anchor layer or hybrid organo-silicon oxide anchor layer from a humidified reaction product of silicon tetrachloride or trichloromethylsilane, followed by the vapor-deposition of a chloroalkylsilane. Such a silicon oxide anchor layer will advantageously have a root mean square surface roughness of less than about 6.0 nm (preferably less than about 5.0 nm) and a low haze value of less than about 3.0% (preferably less than about 2.0%). Another embodiment of the present invention include the simultaneous humidified vapor deposition of a chlorosilyl group containing compound and a chloroalkylsilane. Specifically, in certain preferred embodiments, the simultaneous vapor deposition onto a glass substrate of silicon tetrachloride (SiCl4) and dimethyldichlorosilane (DMDCS) results in a hydrophobic coating comprised of cross-linked polydimethylsiloxane (PDMSO), which may then be capped with a fluoroalkylsilane (FAS). The cross-linked PDMSO layer may be formed on the surface of the glass substrate, or a silicon oxide anchor layer may be deposited under the cross-linked (PDMSO) layer. SiCl4, trimethylchlorosilane (TMCS), trichloromethylsilane and combinations of these silanes therein may also be simultaneously vapor deposited onto a substrate surface so as to achieve hydrophobic coatings of exceptional durability.
    • 底物具有由含氯甲硅烷基的化合物和烷基硅烷的反应产物组成的疏水表面涂层。 最优选地,基底是玻璃。 在本发明的一个优选形式中,可以通过从四氯化硅或三氯甲基硅烷的加湿反应产物形成氧化硅锚定层或混合有机 - 氧化硅锚定层,随后蒸发氯代烷基硅烷 。 这样的氧化硅锚固层将有利地具有小于约6.0nm(优选小于约5.0nm)的均方根表面粗糙度和小于约3.0%(优选小于约2.0%)的低雾度值。 本发明的另一个实施方案包括同时加湿的含氯甲硅烷基化合物和氯烷基硅烷的气相沉积。 具体地说,在某些优选实施方案中,同时气相沉积到四氯化硅(SiCl 4)和二甲基二氯硅烷(DMDCS)的玻璃基底上导致疏水涂层由交联的聚二甲基硅氧烷(PDMSO)组成,然后可以用氟代烷基硅烷 FAS)。 可以在玻璃基板的表面上形成交联的PDMSO层,或者可以在交联(PDMSO)层下沉积氧化硅锚定层。 SiCl4,三甲基氯硅烷(TMCS),三氯甲基硅烷及其中的这些硅烷的组合也可以同时气相沉积到基材表面上,以达到特殊耐久性的疏水涂层。