PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

Paint and Coatings Industry News

Main News Page


Protective Coating Made to Self-Heal

Friday, July 20, 2012

More items for Coating Materials

Comment | More

Nanoscale materials maker NEI Corp. has introduced a two-layer coating designed to significantly improve the corrosion resistance of zinc-plated and hot-dip galvanized steel.

A drop-in replacement for trivalent chromium, the new technology is designed to protect zinc-plated and galvanized steel surfaces from rusting under severe environmental and operating conditions.

 Salt spray test panels

 NEI Corp.

The steel bars on the right show no appreciable white or red rust after 1,000 hours in salt-spray test (ASTM B117). The coating thickness is ~ 10 microns (0.4 mil).

The process consists of applying Nanomyte PT-100, a self-healing conversion coating, followed by Nanomyte TC-5001, a barrier coating designed to work synergistically with PT-100.

Both liquid formulations can be applied by dipping, brushing, and spraying.

Field tests of the system are now underway in these applications:

• Infrastructure (pipelines, buildings, transmission towers, bridges)

• Military armaments

• Aerospace components

• Marine vessels

• Automotive parts

• Electronic circuits

Corrosion Testing

In salt-fog exposure experiments (ASTM B117), Nanomyte-coated, zinc-plated steel panels showed no white rust after 840 hours and no red rust after 1,200 hours, according to the manufacturer. In contrast, NEI said, uncoated, zinc-plated panels showed white rust in 24 hours and red rust after 168 hours.

Salt-spray testing can be used with field testing and online life predictors for coatings on HDG, as prescribed by the American Galvanizers Association (AGA), NEI noted.

“Our thin, double-coat solution for zinc-plated and HDG steel represents a significant advancement in the state of the art that could eliminate the need for using thicker primers and topcoats,” said Dr. Fred Allen, president of NEI’s Anticorrosion Coatings Division.

NEI says the new technology reflects its continuing efforts to develop corrosion-resistant pretreatments, primers, topcoats and other coating systems to protect steel, aluminum and magnesium.

Said Allen, “Our goal is to engage customers as partners in developing new corrosion-resistant coating products.”

Founded in 1997 and based in Somerset, NJ, NEI Corporation develops, manufactures, and distributes protective coatings and other nanoscale materials for a broad range of industrial customers around the world.

More information: http://www.neicorporation.com/.

   

Tagged categories: Corrosion control coatings; Protective coatings; Salt fog; Steel

Comment from Tom Schwerdt, (7/23/2012, 9:59 AM)

Results would be more interesting with a prohesion (cyclic) salt fog, or natural weathering in a coastal environment. Zinc always performs badly in a continuous-wet environment like B117, as it never gets to form its protective patina.


Comment Join the Conversation:

Sign in to our community to add your comments.

International Paint LLC

International Paint Engineered Coatings

Learn about our solutions for:
  • Structural Steel
  • Piping & Equipment
  • Storage Tanks
  • Pressure Vessels
  • Secondary Containment


    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.


    BASF
    New resins from BASF will have metals loving water:

    Excellent corrosion resistance, low VOC, high gloss, thin films basf.us/industrialcoatings
    polyorders@basf.com
    800-231-7868


    Sherwin-Williams
    Nova-Plate® 325

    • Extends Service Life
    • Single Coat Application
    • Cure to Service in 24 Hours


    Keizer Technologies, Inc.
    Fast • Safe • Clean • Silent

    The innovative RPR Induction Disbonder, the world’s fastest, safest, cleanest and very cost effective method for removing paint and coatings from steel surfaces.


    Wasser High-Tech Coatings Inc.
    Wasser Coatings Protect

    some of the most important bridges in the country; learn about our NEPCOAT-approved system and our entire range of MCU & Polyurea coatings. 1-800-627-2968 www.wassercoatings.com


    SSPC: The Society for Protective Coatings
    http://www.sspc.org/

    Join SSPC and Enhance
    Your Career !

  •  
     
     
    Technology Publishing

    The Technology Publishing Network

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

     
    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 PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
     

    © Copyright 2000-2014, 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 webmaster@paintsquare.com