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

 

Download our free Bridge Coating Systems eResource Book

Problem Solving Forum

| More

January 14 - January 20, 2013

Is the MEK rub test a conclusive test to check the cure of IOZ coatings?



More items for Quality Control


Selected Answers

From Simon Hope of Bilfinger Salamis on January 16, 2013:
     MEK rub test is only subjective as proof of cure for IOZ coatings. The test is only valid for the actual area tested and can only be applied to the whole item by extrapolation of result. Confidence in the result can vary wildly, depending on time, humidity and temperature, as the curing mechanism of IOZ is totally dependent on the integration of water into the silicate precursor to create the matrix to support the metallic zinc. Hence, the best advice is that once touch dry, fresh water washing enhances the cure mechanism. High humidity and water washing will give confidence and MEK rub then gives verification.

From wenbo chen of International Paint on January 15, 2013:
     Though ASTM D 4752 describes a standard test method for measuring MEK resistance of IOZ by solvent rub, we always use a coin test in the field. The MEK test is more likely a lab test.

From Chuck Pease of MMI Tank on January 14, 2013:
     Not conclusive, as Dave mentioned. Only a estimation. This requirement is per ASTM D 4752.  Note that in the 4th paragraph, line 2, they call it an estimation.

From Dipesh Vyas of CARBOLINE on February 15, 2013:
     My field expereince reveals that the coin test is the best, easiest,quickest most and reliable test to verify curing of spray- applied IOZ film. The MEK rub test, if not performed by a skilled person, can have misleading  results because spray-applied IOZ always has some loose zinc dust ( overspray), and if not cleaned will react with MEK  In first 5 passes, only satin will be noticed .

From Tom Schwerdt of Texas Department of Transportation on January 22, 2013:
     Wenbo, the MEK rub is certainly a field test - all you need is a rag, MEK and a finger! (Okay, a glove would be nice to have, too.) The MEK rub is more conclusive than the coin test. The only truly conclusive test is in the lab - generally a force cure in a sealed vial, followed by gas chromatography.

From Dave Lisnock of Arizona State University W.P. Carey Facilities on January 14, 2013:
     No, it is not  a conclusive test. The only true test is a lab test.

From Tom Schwerdt of Texas Department of Transportation on February 19, 2013:
     Dipesh - how crisp is the edge of your coin? How much force are you using? At what angle are you holding the coin? The coin test is at least as variable (if not more so) than the MEK rub test.

Please sign in to submit your answer this question    

Tagged categories: Curing; Performance testing


Current PSF Question | Submit a PSF Question | Full PSF Archive

KTA-Tator, Inc. - Corporate Office
KTA-Tator EH&S Services

• Ambient & Worker Exposure Air Monitoring
• Safety & Health Program Development
• Lead Paint Assessments
& Specifications
• Health Hazard & Jobsite Safety Assessments
Call 1-800-245-6379


Fischer Technology Inc.
MP0R with rotating display screen

View your coating thickness readings from any angle with rotating display screen. New graphic display with easy menu navigation. Click for Video
Call 800-243-8417


Elcometer, Inc.
New Elcometer 456 Coating Thickness Gauge

Best In Class Just Got Better. Technologically Intelligent And Robust. Marvelous Design And Durability. An Earth-Shattering Revolution In Coating Inspection.


Blastox/The TDJ Group, Inc.
Blastox - One Step
Lead Abatement

Don't waste $$ on added labor steps with other methods. Don't mix, meter or apply at the job-site. Avoid strict hazardous waste rules.
Let your painters paint!


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


Abrasives Inc.
One Call Orders it All!

Life is good when it’s simple. We distribute Clemco blast equipment, nozzles & parts alongside our proven blast media. Make your call: Abrasives Inc. 800-584-7524


CHLOR*RID International Inc.
Free Webinar

Learn about soluble salts, along with a discussion on allowable levels.
More information at
www.chlor-rid.com,

800-422-3217


Polyval Coatings
Polyflex® Polyurea Linings

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


ABKaelin, LLC
Quality is our bottom line

Services include:
• Environmental, Health &
  Safety
• Contractor QP Certification
• Quality Assurance Programs
  and Auditing
• SSPC C3/C5 and other
  Training
• Coatings
• Design/Construction
See our website at abkaelin.com or contact us today abkaelin@comcast.net

 
 
 
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