A superhydrophobic aerogel that does not require per-fluoro...

Details A superhydrophobic aerogel that does not require per-fluoro... A superhydrophobic aerogel that does not require per-fluoro...

C - Chemistry, Metallurgy

09

D

C09D 183/02 (2006.01) C09D 5/00 (2006.01) C09K 3/18 (2006.01)

Patent

CA 2727920

Provided are superhydrophobic coatings, devices and articles including superhydrophobic coatings, and methods for preparing the superhydrophobic coatings. The exemplary superhydrophobic device can include a substrate component and one or more superhydrophobic coatings disposed over the substrate component, wherein at least one of the one or more superhydrophobic coatings has a water contact angle of at least about 150° and a contact angle hysteresis of less than about 1°. The one or more superhydrophobic coatings can include an ultra high water content acid catalyzed polysilicate gel, the polysilicate gel including a three dimensional network of silica particles having surface functional groups derivatized with a silylating agent and a plurality of pores.

Linvention concerne des revêtements superhydrophobes, des dispositifs et des articles qui comprennent les revêtements superhydrophobes, ainsi que des procédés pour la préparation des revêtements superhydrophobes. Un exemple de dispositif superhydrophobe peut comprendre un composant substrat et un ou plusieurs revêtements superhydrophobes disposés sur le composant substrat, le ou au moins un des revêtements superhydrophobes ayant un angle de contact avec leau dau moins environ 150 ° et une hystérésis dangle de contact inférieure à environ 1 °. Le ou les revêtements superhydrophobes peuvent comprendre un gel de polysilicate catalysé par un acide avec une teneur très élevée en eau, le gel de polysilicate comprenant un réseau tridimensionnel de particules de silice comportant des groupes fonctionnels de surface dérivés avec un agent de silylation et une pluralité de pores.

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