Invention Application
- Patent Title: ICEPHOBIC COATINGS WITH TEMPERATURE-DEPENDENT WETTING
- Patent Title (中): 具有温度依赖性湿度的ICEPHOBIC涂料
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Application No.: US14523852Application Date: 2014-10-25
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Publication No.: US20170002230A1Publication Date: 2017-01-05
- Inventor: Andrew P. NOWAK , Adam F. GROSS
- Applicant: HRL Laboratories, LLC
- Main IPC: C09D175/04
- IPC: C09D175/04 ; C08K3/26 ; C08K5/544 ; C09D133/14

Abstract:
Variations of this invention provide durable, impact-resistant structural coatings that have both dewetting and anti-icing properties. Dewetting and anti-icing performance is simultaneously achieved in a structural coating comprising (a) a continuous matrix; (b) discrete templates that promote surface roughness to inhibit wetting of water; (c) porous voids surrounding the discrete templates; and (d) nanoparticles that inhibit heterogeneous nucleation of water, wherein the discrete templates and/or the nanoparticles include a surface material with hydrophobicity that decreases with increasing temperature. The surface material may be a polymer brush exhibiting an upper critical solution temperature in water of 50° C. or higher. These structural coatings utilize low-cost, lightweight, and environmentally benign materials that can be rapidly sprayed over large areas using convenient coating processes. If the surface is damaged during use, freshly exposed surface will expose a coating identical to that which was removed, for extended lifetime.
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