Problem Solving Forum

| More

October 28 - November 1, 2013

Can fluoropolymer coatings that are still very glossy be overcoated (if, for example, the topcoat is losing color or the color needs to be changed)? If so, what type of coating can be used, and what surface preparation is required?


Selected Answers

From Peter Gillies of A & I Coatings on November 4, 2013:
I agree with Stephen. Air-dried PVF3 coatings can be easily abraded to achieve a mechanical bond. On PVDF coatings, we have found a CPO based tiecoat to be the best.

From Stephen Burdick of CoatingsCI.com on October 29, 2013:
Yes, there is a method for refinishing fluoropolymer coats. One option is to first abrade the coating, usually with 220 grit sandpaper. If this is not possible or impractical, then an adhesion- promoting tiecoat is needed. Exterior  PVDF coatings should be cleaned by powerwashing and rinsed to remove environmental contaminants. A tiecoat can then be applied. Adhesion should be checked before application of any topcoat. The best tiecoat is a vinyl urethane, although there are some bonding primers that are also suitable.

Please sign in to submit your answer this question    

Tagged categories: Fluoropolymer; Good Technical Practice; Overcoating


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

Advertisements
 
KTA-Tator, Inc. - Corporate Office

 
DeFelsko Corporation

 
SAFE Systems, Inc.

 
AWWA (American Water Works Association)

 
Sauereisen, Inc.

 
Tarps manufacturing, Inc.

 
Fischer Technology Inc.

 
Modern Safety Techniques

 
Mitsubishi Gas Chemical America

 
 
 

Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

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


The Technology Publishing Network

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   |   Support   |   Site Map   |   Search   |   Contact Us