Surface modification of hydrophobic and/or oleophobic coatings

Details Surface modification of hydrophobic and/or oleophobic coatings Surface modification of hydrophobic and/or oleophobic coatings

C - Chemistry, Metallurgy

09

D

C09D 5/00 (2006.01) G02B 1/10 (2006.01) G02C 7/02 (2006.01) C09D 5/16 (2006.01)

Patent

CA 2751626

A hydrophobic and/or oleophobic coating system having a reversibly reduced hydrophobicity. A hydrophobic and/ or oleophobic coating is applied to and is bonded or otherwise strongly adhered to a substrate, such as an optical lens. The coating has sufficient thickness to provide a weakly adhered, excess portion that is mechanically removable. The excess portion of the hydrophobic and/or oleophobic coating has a surface that is modified to reduce hydrophobicity, such as by ion bombardment. The hydrophobicity of the coating is restored by mechanical removal of the excess portion of the coating.

La présente invention se rapporte à un système de revêtement hydrophobe et/ou oléophobe présentant une hydrophobicité réversiblement réduite. Un revêtement hydrophobe et/ou oléophobe est appliqué sur un substrat, tel qu'une lentille optique, et lié ou alors fermement collé à ce dernier. Le revêtement présente une épaisseur suffisante pour fournir une partie excédentaire à faible adhérence qui est mécaniquement amovible. La partie excédentaire du revêtement hydrophobe et/ou oléophobe comporte une surface qui est modifiée pour réduire l'hydrophobicité, comme par un bombardement ionique. L'hydrophobicité du revêtement est rétablie grâce au retrait mécanique de la partie excédentaire du revêtement.

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