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1. (WO2018101999) DURABLE SUPERHYDROPHOBIC SURFACES

Pub. No.:    WO/2018/101999    International Application No.:    PCT/US2017/050270
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Sep 07 01:59:59 CEST 2017
IPC: C09K 3/18
C09D 5/16
C09D 201/00
C09D 7/65
B05D 1/02
B05D 5/00
B05D 7/24
Applicants: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
Inventors: TUTEJA, Anish
GOLOVIN, Kevin
GOSE, James W.
BOBAN, Mathew
MABRY, Joseph M.
PERLIN, Marc
CECCIO, Steven
Title: DURABLE SUPERHYDROPHOBIC SURFACES
Abstract:
Durable superhydrophobic components have a superhydrophobic material disposed (e.g., disposed) thereon that exhibits an apparent advancing dynamic contact angle of ≥ about 150° and a roll-off angle of about ≤ 15° for water after at least 100 abrasion cycles. The superhydrophobic material may comprise a low surface energy material and a polymeric material. The superhydrophobic material may be self-healing and capable of recovering its wettability after damage. In yet other aspects, a component comprises a surface that is superhydrophobic and reduces drag in turbulent flow conditions. The surface has an apparent advancing dynamic contact angle of ≥ about 150° and a roll-off angle of ≤ about 15° for water, and a product of dimensionless roughness (k+) and a higher-pressure contact angle hysteresis of less than or equal to about 5.8. Methods of making such materials are also provided.