PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Advertisement

PaintSquare


Problem Solving Forum

| More

June 27 - July 4, 2011

What steps must be taken to mitigate poor adhesion over an existing aged silver aluminum paint? What primer will achieve good adhesion?

More items for Coating Application


Selected Answers

From José Avendaño of Testers y Multimetros 2011 CA on June 27, 2011:
     Which ever surface preparation method you choose to enhance the bond, you must apply a test patch of the paint system to verify proper coating adhesion. You can use high pressure water cleaning and dull by sanding, but remember, check compatibility with ASTM D3359.

From friday Aigbekhai of Nigerdock on June 26, 2011:
      High pressure wash the surface; abrade the surface to activate it or sweep blast it; and apply surface-tolerant epoxy or a mastic primer.

From Bill Mann of United Coatings on September 2, 2011:
     Some of these aluminized paints will "leaf," even after being pressure-washed, which can result in a poor bond of the of the subsequent topcoat. I'd recommend a low-viscosity, penetrating epoxy primer be applied after cleaning, which will help minimize potential leafing of the aluminum.

From Anand Karamandi of Wasser Coatings on September 3, 2011:
Surface preparation of SSPC SP2 or SP3 is preferred, if SP6 or SP7 is not possible. A good coat of epoxy mastic at 5-6 mils DFT should be fine. If exposed to UV, a coat of urethane is recommended. Alternatively, a 100% epoxy penetrating sealer can be applied at 1 to 1.5 mil DFT, with solvent cleaning as surface preparation and a necessary topcoat can do a pretty decent job.

From Car F. of Municipal City on August 30, 2011:
     I would ask why was the aluminum paint used in the first place. There may be a thermal transferring consideration or a thin film requirement, such as heat radiators or similar devices. Once the question is answered, I would apply the suggestion of the prior commentators.

From Shrikant Naik of Asian Paints Limited on August 25, 2011:
     Thorough abrasion of the paint surface to remove loosely adherent paint film, followed by water wash to remove soluble salts and other contaminants, if any. The surface can then be coated with conventional alkyd-based coating or a surface-tolerant epoxy mastic.

Please sign in to submit your answer this question    

Tagged categories: Adhesion; Aluminum; Primers


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

Advertisements
 
SEMicro Division, M.E. Taylor Engineering, Inc.
 
Coatings Adhesion Testers
 
The PATTI® accurately measures the bond strength between coating & substrate. Outfitted properly, the surface can be rough, porous, or curved & >10K psi strong!
 

 
Detail Masters
 
Overspray Removal
 
We offer professional, turnkey service and unparalleled quality!
Our process can save hundreds— even thousands of dollars. It's fast, environmentally safe and 100% guaranteed.
 

 
SAFE Systems, Inc.
 
Portable Blast &
Recovery Equipment
 
Trailer or skid mounted blast and recovery equipment. Systems designed for maximum versatility, environmental compliance
and overall cost savings.
Call 1-800-634-7278
 

 
SABRE Autonomous Solutions
 
Introducing the ALPHA1 Blasting Robot
 
Once installed and commissioned – simply
SCAN PLAN BLAST.
 

 
Axxiom Manufacturing
 
Revolutionary Units
 
By integrating Schmidt's Aftercoolers with our blast pots, these systems remove moisture from air and minimize equipment footprint on jobsite.
Call 1-800-231-2085
 

 
Modern Safety Techniques
 
Modern Safety Techniques
 
With our unique LTCat, we can help to provide clean, safe breathing air to your workers. Take a look at our Breathing Air Systems, we supply at least twice as much charcoal as our competitors! Modern
 

 
Novatek Corporation
 
Novatek Corporation, Dustless Coatings Removal
 
Strip, clean and profile all dust free! Comply with new lead standards. Contact today: (866) 563-7800
 

 
Termarust Technologies
 
Termarust (HR CSA) Chemically Stops
Active Corrosion
 
Arch truss treated with Termarust's (HR CSA) in 2003. This steel arch bridge is rust free on all surfaces including the crevice corroded joints and connections.
 

 
HoldTight Solutions Inc.
 
NO FLASH RUST - NO CONTAMINANTS
 
Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802 sales@holdtight.com
 

 
International Bridge Conference
 
2017 International Bridge Conference
 
June 4-8, 2017, National Harbor, Maryland
 

 
 
 

Technology Publishing Co., 2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings 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