Menu
Search
Filters
Close
Menu

Estimating Color Fade of PVDF-Based Topcoats for ‘Bright Color’ Architectural Restoration and Protective Coating Applications

Estimating Color Fade of PVDF-Based Topcoats for ‘Bright Color’ Architectural Restoration and Protective Coating Applications
Available for download

Many common topcoat standards used for architectural and protective coating applications (e.g., MPI 311, SSPC-Paint 36) include a durability requirement based on the accelerated weathering performance of a white coating. However, there are currently no standards for field-applied coatings which address the needs of specifiers who want to ensure durable color performance in high chroma (saturated, or bright) colors, e.g., Safety Red. 

Product Number: 51217-082-SG
Author: Kurt Wood
Publication Date: 2017
Industry: Coatings
$0.00
$20.00
$20.00

Many common topcoat standards used for architectural and protective coating applications (e.g., MPI 311, SSPC-Paint 36) include a durability requirement based on the accelerated weathering performance of a white coating. However, there are currently no standards for field-applied coatings which address the needs of specifiers who want to ensure durable color performance in high chroma (saturated, or bright) colors, e.g., Safety Red. For several fluoropolymer resin chemistries, there is both outdoor and accelerated data for coatings made using a broad range of pigment chemistries, enabling estimates of outdoor color lifetime to be made with a reasonably high degree of confidence for virtually any color, as long as one stays within the particular resin chemistry space. These principles will be demonstrated with reference to PVDF-based topcoats, where it was found that both the pigment grades and the resin are important factors for determining the color lifetime, along with the pigment volume concentration. The relationship between color retention in south Florida and accelerated testing also depends on the resin chemistry. This finding suggests that a performance-based standard for low-color-fade topcoats should be restricted to specific resin chemistries with proven performance, similar to SSPCPaint 20 for zinc-rich primers, which lists specific binder chemistries. For 3rd-party qualification purposes, to validate the resin system used, accelerated weathering color retention performance standards should be defined based upon a particular reference pigment chemistry (e.g., Pigment Red 254, DPP red, for Safety Red). Because it reliably generates chalking of acrylic systems, similar to what is observed in Florida, UVB-313 fluorescent cabinet testing may be a more reliable test for distinguishing PVDF-based coatings from non-fluoropolymer coatings than UVA-340 testing.

Many common topcoat standards used for architectural and protective coating applications (e.g., MPI 311, SSPC-Paint 36) include a durability requirement based on the accelerated weathering performance of a white coating. However, there are currently no standards for field-applied coatings which address the needs of specifiers who want to ensure durable color performance in high chroma (saturated, or bright) colors, e.g., Safety Red. For several fluoropolymer resin chemistries, there is both outdoor and accelerated data for coatings made using a broad range of pigment chemistries, enabling estimates of outdoor color lifetime to be made with a reasonably high degree of confidence for virtually any color, as long as one stays within the particular resin chemistry space. These principles will be demonstrated with reference to PVDF-based topcoats, where it was found that both the pigment grades and the resin are important factors for determining the color lifetime, along with the pigment volume concentration. The relationship between color retention in south Florida and accelerated testing also depends on the resin chemistry. This finding suggests that a performance-based standard for low-color-fade topcoats should be restricted to specific resin chemistries with proven performance, similar to SSPCPaint 20 for zinc-rich primers, which lists specific binder chemistries. For 3rd-party qualification purposes, to validate the resin system used, accelerated weathering color retention performance standards should be defined based upon a particular reference pigment chemistry (e.g., Pigment Red 254, DPP red, for Safety Red). Because it reliably generates chalking of acrylic systems, similar to what is observed in Florida, UVB-313 fluorescent cabinet testing may be a more reliable test for distinguishing PVDF-based coatings from non-fluoropolymer coatings than UVA-340 testing.

Product tags
Also Purchased
Evaluations of Wetting and Dispersing Additives for Use in Waterborne AntiCorrosive Paints
Available for download

Evaluations of Wetting and Dispersing Additives for Use in Waterborne AntiCorrosive Paints

Product Number: 51217-032-SG
Author: Martin Muth, Max Conrad “Hochschule Niederrhein”, Ronald Brashear
Publication Date: 2017
$20.00

Over the last few years, the protective coatings industry has seen an increased demand for high performance waterborne coatings in the field of corrosion protection. Market drivers such as “Sustainability”, “Greenability”, and ongoing regulatory and environmental concerns continue to force coatings producers to look for other viable options to replace conventional solvent borne technologies. 
Picture for 09009 Heavy Duty Glass flake Coatings for Arduous Anti-Corrosion Service
Available for download

09009 Heavy Duty Glass flake Coatings for Arduous Anti-Corrosion Service

Product Number: 51300-09009-SG
ISBN: 09009 2009 CP
Author: Charles Watkinson
Publication Date: 2009
$20.00
Picture for 09012 Advancements in High Performance Zinc Epoxy Coatings
Available for download

09012 Advancements in High Performance Zinc Epoxy Coatings

Product Number: 51300-09012-SG
ISBN: 09012 2009 CP
Author: Lars Thorslund Pedersen
Publication Date: 2009
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support