PaintSquare.com
      | Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise
  

 

Paint and Coatings Industry News

Main News Page


New Test Developed for Protective Waterbornes

Wednesday, August 11, 2010

Comment | More

A German research team says it has developed a rapid test to better evaluate the protective abilities of water-based coating systems.

“Due to European REACH regulation, water-based corrosion protective coatings are a focus of interest,” said Dr. Matthias Wanner, who heads the project for the Fraunhofer Institute for Manufacturing Engineering and Automation IPA in Stuttgart.

REACH (Registration, Evaluation, Authorization and Restriction of Chemical substances) is a 2007 European Community regulation on the safe use of chemicals. The measure calls for the progressive substitution of the most dangerous chemicals when suitable alternatives have been identified.

“The literature, however, often reports unfavorable short-time test results for such systems, even if they show sound performance in outdoor weathering,” Wanner told PaintSquare News.

The gap between test results and actual performance is due to the coatings’ slow film formation and the retention of hydrophilic components in the polymer film, Wanner explained.

Wanner’s team thus set out to develop a procedure “to facilitate the elution of soluble hydrophilic components (e.g. monomers, oligomers, emulsifiers etc.) from the matrix and to accelerate the film formation.”

The resulting process was accomplished by “a special wet/dry cycling of coated samples, monitored by an in situ electrochemical impedance spectroscopy (EIS),” said Wanner. After this “pre-conditioning,”  the waterborne coatings “can be tested on their real long-term barrier and corrosion protective properties.”

Scientists can thus compare coatings systems without having to wait for the formation of the complete barrier effect.

In fact, pre-conditioning revealed “improved protective properties” among some water-based coatings, Wanner said. “Moreover, it became apparent that the early EIS monitoring during the pre-conditioning provides valuable data about the properties of the tested coatings.

“These data can be used for a pre-screening and optimal formulation of water-based coatings.”

For more information, visit www.ipa.fraunhofer.de.

   

Tagged categories: Coatings technology; Protective coatings; Waterborne coatings

Comment Join the Conversation:

Sign in to our community to add your comments.

Thermion Inc
Buy Back Program

We are offering $5,000
credit for your old Model
This drive system is
being discontinued by
the manufacturer.
More information at
thermioninc.com
877.884.3428


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).
www.wassercoatings.com


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

Join SSPC and Enhance
Your Career !


International Paint LLC

International Paint Engineered Coatings

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


    Advanced Recycling Systems
    ADVANCED RECYCLING SYSTEMS (ARS)

    Recycling Machines, Dust Collectors, Rapid Deployment units are time-tested and approved for the rugged industrial environment. Contact ARS today!
    (330)536-8210


    Atlantic Design, Inc.
    MORE THAN JUST A SALES PITCH!

    Simplicity! Dependability! Safety! We’ve built these features into every cleverly engineered inch of our newest models. It’s all there. 866.Call.ADI


    Mohawk Garnet
    Enska by Mohawk Garnet™

    A safe, efficient and economical abrasive alternative to slag and sand products. More information
    at 1.866.642.7638 or info@mohawkgarnet.com Email for follow up – mheilimo@mohawkgarnet.com


    Trelawny Surface Preparation Technology
    Surface Preparation Equipment

    Manufacturer of needle scalers, grinders, scarifiers and scabblers. Pneumatic tools for Marine and Construction. US distributor CS Unitec: 800-700-5919


    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.

  •  
     
     
    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 PaintSquare.com   |   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 webmaster@paintsquare.com