Prevention of hydrophobic dewetting through nanoparticle surface treatment
AssigneeResearch Foundation of the City University of New York
InventorsBarry Van Tassell, Daniel Steingart, Eli S. Leland, Paul Chando, Limin Huang, Stephen O'Brien
Life of this patent
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Abstract
Disclosed in this specification is a method for coating a substrate to prevent dewetting. A suspension of nanoparticles is deposited onto the substrate to produce a nanoparticle layer. The nanoparticle layer is then coated with a monomer. The monomer polymerizes on the nanoparticle layer to produce a polymeric layer.
Claims16
A method for coating a substrate to prevent dewetting, the method comprising the sequential steps of:
- depositing a suspension of nanoparticles in a liquid directly onto a surface of a substrate;
- permitting the liquid to evaporate to produce a pre-deposited nanoparticle layer directly on the surface;
- coating the pre-deposited nanoparticle layer with a monomer such that the monomer is coated directly on the pre-deposited nanoparticle layer;
- and
- allowing the monomer to thermally polymerize at a temperature above 80° C. to produce a polymeric layer directly on the pre-deposited nanoparticle layer.
A method for coating a substrate to prevent dewetting, the method comprising the sequential steps of:
- depositing a suspension of nanoparticles in a liquid directly onto a surface of a metal substrate;
- permitting the liquid to evaporate to produce a pre-deposited nanoparticle layer on the surface;
- coating the pre-deposited nanoparticle layer with a furfuryl alcohol such that the furfuryl alcohol is coated directly on the pre-deposited nanoparticle layer;
- allowing the furfuryl alcohol to thermally polymerize at a temperature above 80° C. to produce a polymeric layer directly on the pre-deposited nanoparticle layer.
A layered substrate that resists dewetting, the layered substrate comprising:
- a metal substrate;
- a nanoparticle layer disposed directly on the metal substrate, the nanoparticle layer being less than about five hundred nanometers thick and comprising nanoparticles with a size of from about 1 nm to about 1000 nm;
- a polymeric layer disposed directly on the nanoparticle layer, the polymeric layer being the reaction product of a thermal polymerization reaction of a monomer, the polymerization reaction occurring on the nanoparticle layer, wherein the monomer and the polymeric layer have different degrees of hydrophobicity.
Dependencies are inferred from the claim text.