Water dispersible composite particles, methods of making, and coatings
AssigneeUniversity of Florida Research Foundation, Inc.
InventorsWolfgang M. Sigmund, Chieh-Ming Tsai
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Abstract
The present disclosure provides for compositions including a composite particle, methods for making the composite particle, methods for using the composite particle, articles upon which the composite particle have been disposed, compositions including the composite particle and a fluid, devices including the composite particle and the fluid, and methods of using the composition including the composite particle and the fluid. Due to the structure and composition of the composite particle, the composite particle can be dispersed in an aqueous medium and then coated on a surface of an article, where upon evaporation of the aqueous solution forms a hydrophobic or superhydrophobic coating on the surface of the article.
Claims15
A composition, comprising a composite particle having a hydrophilic metal core, and having two layers, an inner layer on the surface of the hydrophilic core and an outer layer bonded to the inner layer, wherein the inner layer is made of a polyethyleneimine and the outer layer is a fluorosilane, wherein either a first porous region is present within the inner layer, a second porous region is present between the inner layer and the outer layer, or both.
A composition, comprising a composite particle having a hydrophilic core, and having two layers, an inner layer on the surface of the hydrophilic core and an outer layer bonded to the inner layer, wherein the inner layer is made of a polyethyleneimine and the outer layer is a fluorosilane, wherein either a first porous region is present within the inner layer, a second porous region is present between the inner layer and the outer layer, or both, wherein the composition has a surface that is superhydrophobic having a contact angle between a water droplet and a surface is greater than 150° and a roll off angle is less than 2°.
Dependencies are inferred from the claim text.