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

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 C.A. Venezolana de Pinturas 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 Carboline 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

HoldTight Solutions Inc.
NO FLASH RUST -
NO CONTAMINANTS

Our HoldTight®102 salt remover & flash rush inhibitor prevents flash rust by removing surface contaminants.
Contact us for your nearest distributor. (800) 319.8802 sales@holdtight.com


DeFelsko Corporation
PosiTector 200 for concrete

Rugged, simple and affordable coating thickness gage for concrete measures protective coatings including polyurea.


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


Armakleen Company, The
ARMEX when nondestructive cleaning is critical

The gentle physical propriety of baking soda but yet aggressive cleaning ability is what makes ARMEX the only choice for nondestructive abrasive blasting.


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!


Elcometer, Inc.
Durability & Design meet
Performance & Reliability

Elcometer 319 Dewpoint Meter
View the technical data on the Elcometer Dewpoint meter.


US Minerals
US Minerals -
Black Magnum

With nationwide production and distribution capabilities, U.S. Minerals supplies a complete range of coal slag and other abrasives to meet all of your blasting needs.


Montipower, Inc.
The MBX Bristle Blaster

Get a 2.7 to 3.3 mil profile and a Near White Metal Clean. For info visit www.mbxit.com or call 877 629-8777


Minerals Research & Recovery

HIGH PERFORMANCE ABRASIVES


“Made in the USA!”

Why recycle waste from other countries? Go FASTER, CLEANER, at 1/3 THE COST with MR&R “All-American” Sharpshot®HP!!

WATCH THE VIDEO

 
 
 
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