in FEVE Fluoropolymer Resin Technology Performance Beyond Weatherability Bob Parker AGC Chemicals October 29 2014 Recent Discoveries in FEVE Technology Outline Explanation of FEVE ID: 709542
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Slide1
“Recent Discoveries in FEVE Fluoropolymer Resin Technology – Performance Beyond Weatherability”
Bob Parker
AGC Chemicals
October
29, 2014Slide2
Recent Discoveries in FEVE Technology Outline:Explanation of FEVE polyol technology
Summary of FEVE resins and their properties
Exposure testing of FEVE resin formulations
Corrosion resistance testing Chemical Resistance TestingMoisture Permeability TestingSummary
1Slide3
Recent Discoveries in FEVE Technology Fluoroethylene Vinyl Ether (FEVE) Resins
2
FLUORINATED SEGMENTS: Weatherability, chemical resistance
VINYL ETHER SEGMENTS: Gloss, solubility, crosslinkingSlide4
Recent Discoveries in FEVE Technology Characteristics of FEVE
Fluoropolymer
Resins
:Ambient CureAllows field applications at ambient temperaturesOH Functionality
-
Crosslinkable
with hardeners
Solvent Soluble
Conventional application techniques
Wide range of gloss
Fluoropolymer
Segments
UV ResistanceCorrosion resistanceChemical and solvent resistance
3Slide5
Recent Discoveries in FEVE Technology Markets for FEVE resin-containing coatings:
Architectural Coatings for commercial buildings
Industrial Maintenance Coatings for water towers, bridges, and assorted metal and concrete structures
Aerospace coatings Applications in Marine environments 4Slide6
Recent Discoveries in FEVE Technology Commercial Types of “FEVE” Polyol Resins:
Solvent soluble resins
–
uses organic solvents for viscosity reduction; predominantly cured with isocyanates; available as resin solutions or as 100% solid resins2) Water-based dispersion – carboxyl modification of FEVE resin to obtain stable dispersion in water
5Slide7
Recent Discoveries in FEVE Technology Commercial Types of “FEVE” Polyol Resins:
3) Water-based emulsion –
use vinyl ether
macromonomers containing polyoxyethylene (EO) units to create stable emulsion 6Slide8
Recent Discoveries in FEVE Technology
7
QUV-B
Weatherometer
Exposure Testing Slide9
Recent Discoveries in FEVE Technology 8
QUV-A
Weatherometer
Exposure TestingSlide10
Recent Discoveries in FEVE Technology
9
Sunshine Weatherometer Exposure Testing (Carbon Arc)Slide11
Recent Discoveries in FEVE Technology 10
EMMAQUA Testing (Outside Test Fence – Arizona)Slide12
Recent Discoveries in FEVE Technology 11
South Florida Test Fence ExposureSlide13
Recent Discoveries in FEVE Technology Corrosion Resistance Test of FEVE Coatings:
LOCATION:
Suruga Bay Marine Test Station (offshore)
LENGTH OF TEST: 16 yearsCOATINGS SYSTEMS ON TEST: 1) Zinc-rich primer / Epoxy Midcoat / Acrylic Urethane Topcoat 2) Zinc-rich primer / Epoxy Midcoat / Fluorourethane TopcoatTHICKNESS OF COATING: PRIMER = 3 mils /
MIDCOAT = 6 mils
/
TOPCOAT = 1 mil(25 microns)
12Slide14
Recent Discoveries in FEVE Technology
ACRYLIC URETHANE TOPCOAT
FLUOROURETHANE TOPCOAT
INITIAL MEASUREMENT (microns)
25
25
FINAL MEASUREMENT (microns)
0
(after 13 years)
21
13
Measurement of Total Erosion of the Topcoat Slide15
Recent Discoveries in FEVE Technology 14
SEM Scan of cross section
Of Coating System
(after 16 year exposure)EDX (Energy Dispersive X-Ray Microanalysis)BLUE: ChlorideGREEN:
Coating System
RED:
MetalSlide16
Recent Discoveries in FEVE Technology 15
SEM Scan of Zinc-rich Primer
INITIAL
AFTER 15 YEARSSlide17
Recent Discoveries in FEVE Technology 16
2K Polyurethane
on the left (1 Coat)
2K Fluoro-urethane on the right (1 Coat)2000 Hours of B117 Salt Spray testing(Panels primed with
3 mils of 2K Epoxy)Slide18
Recent Discoveries in FEVE Technology 17
2000 Hours of B117
Salt Spray
testing(Panels primed with 3 mils of 2K Epoxy)2K Polysiloxane
on the
left (1 Coat)
2K
Fluoro
-urethane
on the
right (1 Coat)Slide19
Recent Discoveries in FEVE Technology Chemical Resistance Testing The following testing is immersion testing.
The coated test panels are fully immersed
in the chemical/solvent and observedfor any changes in their appearance 18Slide20
Recent Discoveries in FEVE Technology CHEMICAL
EXPOSURE
(Acid or Base)
FEVE Resin with medium crosslink density (Days to Failure*)
FEVE Resin with high crosslink density
(Days to failure*)
10%
HCl
(Hydrochloric Acid)
>30
>30
10%H2SO4 (
Sulphuric
Acid)
>30
>30
5% CH3COOH (Acetic Acid))
17
>30
1% H2SO3
(
Sulphur
Dioxide
)
3
3
10% NaOH (Sodium Hydroxide)
>30
>30
12% NaOCl (Sodium Hypochlorite)
>30
>30
19
*
Failure
is defined
as one of these changes in the dry film:
The
appearance of
blisters
Gloss reduction
Total
paint film degradation
The
test coating
is a gloss white 2-pack
fluorourethane
.Slide21
Recent Discoveries in FEVE Technology SOLVENT EXPOSURE
FEVE Resin with medium crosslink density
(Days to Failure*)
FEVE Resin with high crosslink density
(Days to failure*)
Aqueous Formaldehyde
>30
>30
Benzene
>30
>30
Xylene
10
>30
Acetone
20
20
Isopropanol
20
20
20
*
Failure
is defined
as one of these changes in the dry film:
The
appearance of
blisters
Gloss reduction
Total
paint film degradation
The
test coating
is a gloss white 2-pack
fluorourethane
.Slide22
Recent Discoveries in FEVE Technology 21
4 Hour Spot Test – 98%
Sulphuric
AcidPanel #1 – 3-4 mils of Epoxy Primer
Coating dissolved immediately
Panel #2 –
3-4 mils of Epoxy primer
5-6 mils of FEVE-based
clear coating
Coating remained intactSlide23
Recent Discoveries in FEVE Technology Moisture Permeability TestingFollowing ASTM Test Method E96 or D1653
Measuring the amount of water vapor transmitted through the film of the cured coating
Unit of measurement is grams of water vapor per cm² per hour
There is a correlation between the amount of moisture permeability of the coating and the degree of corrosion of the substrate22Slide24
Recent Discoveries in FEVE Technology
Resin Type
Cured
with Hardener
Film Thickness (microns)
Total Moisture Permeation**
FEVE
polyol
*
No
20
1.09
x 10ˉ³
Acrylic
Polyol
No
20
4.5
x 10ˉ³
FEVE
Polyol
*
Yes
21
0.45
x 10ˉ³
Acrylic
polyol
Yes
14
1.55
x 10ˉ³
23
*medium crosslink density resin
**grams
of water vapor per cm² per hourSlide25
Recent Discoveries in FEVE Technology SummaryFEVE resin technology is an alternative choice for exterior coatings, both pigmented coatings and
clearcoats
.
They possess some interesting properties that expand the list of formulating tools which can be used in the pursuit of high-performance industrial maintenance coatings.FEVE resin technology can be easily incorporated into many standard solvent-based and water-based formulations. 24