| Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise


Download our free Transmission Pipeline Coating Systems eResource Book

Paint and Coatings Industry News

Main News Page

Water-Repellant Coatings Advance

Friday, September 16, 2011

More items for Coating Materials

Comment | More

Researchers at the University of Pittsburgh say they have overcome a key drawback to a highly desirable corrosion inhibitor: superhydrophobic coatings.

Coatings that are not just impermeable to water, but actually make water bounce off the surface, have always been valued for corrosion prevention. But many of the current offerings have lacked durability—until now, researchers say.

 Pitt researchers say they have developed a very durable superhydrophobic coating

 Chinese Academy of Sciences

University of Pittsburgh researchers say they have developed a very durable superhydrophobic coating.

The team has developed a synthesis method and composition for a superhydrophobic coating that readily cures at room temperature, provides good adhesion to the substrate, and forms a durable superhydrophobic surface.

The coating can be applied on a variety of substrates (including metals, glass, ceramics, textiles and paper) by a variety of conventional painting techniques, including spraying, roller coating, dip coating, flow coating and brushing.

Performance Characteristics

Researchers say the finished surface has excellent superhydrophobicity: The water contact angle is greater than 170 degrees C, and the sliding angle of a 4 microliter droplet is less than 1 degree.

After curing at room temperature, the coating shows good thermal stability (the superhydrophobicity remains up to 200 degrees C) and resists strong acids, bases and other common corrosive chemicals.

“Most superhydrophobic coatings made by currently available technologies are not durable,” the university said in a statement. “They don’t have a good adhesion to the substrate, so they are easily scratched off; they deteriorate over time; they do not resist heating or corrosive chemicals; they lose superhydrophobicity once completely immersed in water for a long period of time.”

The patent-pending coating is not available for online licensing. Contact Dr. Harold Swift, Technology Licensing Manager at the University of Pittsburgh, for more information.


Tagged categories: Corrosion inhibitors; Corrosion resistance; Metals; Research; Water repellents

Comment from Gunnar Ackx, (9/19/2011, 12:30 PM)

Sounds promising; how about 'overcoatability' though? These coatings will need to be overcoated at some point in time...

Comment Join the Conversation:

Sign in to our community to add your comments.

Carboline Company
Fireproofing Solutions

Pyroclad® X1 Thermo-Lag® Pyrocrete® – protecting against hydrocarbon and jet fires, explosions, and cryogenic spills.

Jessup Manufacturing Company
More Traction for Extreme Marine Conditions

Jessup Safety Track® 3800 Military Grade peel-and-stick non-skid tapes and treads provide extra slip resistance for decks. MIL-PRF-24467C Type XI, Black & Gray.

Polyval Coatings
Polyflex® Polyurea Linings

Polyflex™ new Polyurea Geotextile Membrane System has been specifically engineered to protect the environment in containment applications.

New resins from BASF will have metals loving water:

Excellent corrosion resistance, low VOC, high gloss, thin films

International Paint LLC
Premium Low VOC Polyurethane Finish

AkzoNobel introduces Interthane 990V as a 250 g/l HAPS free polyurethane with outstanding color and gloss retention. 990V is fast curing and applicator friendly.

Mitsubishi Gas Chemical America
Performance Amine 1,3-BAC

A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.

Sherwin-Williams Protective & Marine Coatings

With 4,000 distribution points and 3,700+ years of experience, Sherwin-Williams delivers the products, support and expertise you need, right where you need it.

Wasser High-Tech Coatings Inc.
Wasser Coatings Protect

Wasser Coatings offer a complete range of Moisture Cure Urethane (NEPCOAT approved) systems in addition to Polyurea membranes and linings(NSF).

Clemco Industries Corp.
Powerful Protection in a Small Package

Mounts inside blast helmet, alerts operator to dangerous breathing-air condition by audible, visual, and vibratory alarms. Easily calibrated, battery operated.

Specialty Products, Inc. (SPI)

After 40 years in the coating business, SPI has trained more industry professionals than any other polyurea manufacturer. Now offering more classes at more locations than ever before!

Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us

© Copyright 2000-2015, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail