Technical Bulletin Specialty polymerS

Long-Term Performance of Architectural Coatings Hylar® 5000 PVDF

Architectural coatings may look similar when first applied; however, after years of exposure to nature and time, coatings based on Hylar® 5000 PVDF exhibit outstanding resistance to UV, humidity, color change, chalk, gloss loss and chemicals. Their superior performance delivers unsurpassed protection and ensures a long-lasting, durable finish.

Coating properties vary widely among manufacturers and generic categories. In this bulletin, Solvay Specialty Polymers has compared what we consider typical average properties of common systems as determined by a review of literature, published reports and internal evaluations. Because of the wide variety within categories, products are available that are either better or worse than the average ratings we have listed. In any case, the supplier of any specific material should be the source of definitive information about its products. This document serves as a guideline only.

color and Gloss retentionWhen properly formulated using the optimal 70:30 ratio of PVDF to acrylic resin and using inorganic pigments, Hylar® 5000 coatings maintain their color fastness and gloss longer than all other architectural coatings. PVDF’s superior ability to resist degradation caused by outdoor exposure is illustrated in Figures 1 through 3. Changes in color and gloss reported here are averages taken from panels of various colors from multiple commercial applicators.

chalking resistanceChalking is the formation of a powdery surface condition resulting from the destruction of a coating’s binder, which is caused by weathering or otherwise destructive environment. As the binder is decomposed, the pigment becomes loosely bound on the surface and resembles

chalk when the finger is rubbed over it. The chalking rating is determined by the amount of material removed from the surface of the coating when rubbed (ASTM D4214), with 10 being the highest rating. Unlike PVDF coatings, a large degree of chalking was observed in the competitive coatings (Figure 4).

chemical resistancePVDF and other fluoropolymers are noted for their exceptional resistance to chemicals, solvents and other aggressive conditions. Environmental stress from industrial pollutants, acid rain and construction materials, such as caustic mortars, detergents or acid washes, pose little threat to Hylar® 5000 coatings. In addition, PVDF coatings offer excellent resistance to the corrosive salt found in coastal regions.

Dirt resistanceIn the consumer world, the low surface energy of fluoropolymers has given rise to non-stick cookware. This same surface characteristic, along with other intrinsic properties of the coating, is utilized in Hylar® 5000 coating systems to reduce the attraction and retention of residue and contamination as compared to other architectural finishes.

In addition to dirt resistance and dirt shedding properties, Hylar® 5000 coatings provide an easy-to-clean surface and excellent stain resistance over time. This reduces the need for periodic cleaning, thereby lowering maintenance costs and enhancing long-term appearance. Figure 5 illustrates the ease with which Hylar® 5000 coatings are cleaned after short-term Florida exposure using a simple soap water wash.

2 \ Long-Term Performance of Hylar® 5000 PVDF Architectural Coatings

Figure 1: Color change after 45 ° south Florida exposureD

elta

E (

Cie

lab

)

10

9

8

7

6

5

4

3

2

1

0

AAMA 2605 spec. max

Exposure time [years]0 1 2 3 4 5 6 7 8 9 10

FEVEPolyesterAcrylicSilicone-modi�ed polyesterHylar® 5000 PVDF

Figure 2: Gloss retention after 45 ° south Florida exposure

Glo

ss r

eten

tion

(%)

120

100

80

60

40

20

0

AAMA 2605 spec. max

Exposure time [years]0 1 2 3 4 5 6 7 8 9 10

FEVEPolyesterAcrylicSilicone-modi�ed polyesterHylar® 5000 PVDF

Figure 3: Superior weatherability of Hylar® 5000 PVDF coatings

Hylar® 5000

F-0233-GCS

Unexposed

Exposed

FEVE

F-0232-GCS

Acrylic Glossy

F-0297-GCS

Polyester

F-0179-GCS

Plastisol

F-0183-NCS

Hylar® 5000

F-0179-NCS

3 \ Long-Term Performance of Hylar® 5000 PVDF Architectural Coatings

Figure 4: Chalk rating after 45 ° south Florida exposure

Hylar® 5000 PVDFSilicone polyesterVinyl plastisolUrethane

Cha

lk r

atin

g

Exposure time [years]

12

10

8

6

4

2

0

121084 620

Figure 5: Change in lightness of washed white coatings, 6 months Florida exposure

Hylar® 5000

PVDF PVC

Silicone polyester

Polyurethane

Enamel

Del

ta L

(C

IELA

B)

0

-1

-2

-3

-4

UV resistanceOf all the elements that cause architectural coatings to change or fail, UV radiation is probably the most destructive. In the presence of high moisture levels, like this found in south Florida exposure sites, the degradation caused by UV radiation is accelerated. Hylar® 5000 PVDF is transparent to and relatively unaffected by the sun’s UV radiation, which causes lower performing coatings to lose their aesthetics over time.

Photomicrographs of test panels shown in Table 1 compare the damage inflicted by the high levels of UV and humidity found in south Florida. Hylar® 5000 coatings are mostly unchanged, while the competitive coatings show increasing amounts of degradation over the 160 months of exposure.

performance comparisonThe information presented in Table 2 was created by the National Coil Coating Association to describe the performance capabilities of various coil coating topcoats. The chart is intended to provide only general information as a wide range of performance criteria exist within any generic coating category. Ratings are only for topcoats and do not include an evaluation of primer technology.

The physical properties (e.g., pencil hardness, impact resistance, flexibility) were rated using the assumption that excellent adhesion to the substrate (for one-coat systems) or to the primer (for two-coat systems) exists. Resistance properties (e.g., humidity resistance, salt spray resistance) are highly dependent upon the quality of the substrate, and in all cases it was assumed that adequately pretreated, first-quality substrate was used for the evaluation.

4 \ Long-Term Performance of Hylar® 5000 PVDF Architectural Coatings

table 1: Performance capabilities of various coil coating topcoats

Panel # 741 1000X Silicone polyesterBlue

Panel # 745 1000X AcrylicTan

Panel # 747 1000X AnodizedBronze

Panel # 748 1000X Hylar® 5000 PVDFBlue

5 \ Long-Term Performance of Hylar® 5000 PVDF Architectural Coatings

table 2: Comparative properties and performance chart

properties aStm method plastisol Solution

acrylic polyester

interior Usepolyester

exterior Use

Impact resistance D2794 5 2 3 – 5 3

Mar resistance D3363, D2197 3 4 4 4

Metal marking resistance No method 3 4 4 4

Resistance to pressure mottling in coil

D3003 3 4 4 4

Solvent (MEK) resistance D5402 N/A 4 3 – 5 5

Grease and oil resistance D5402, D1308 4 3 3 – 5 4

Stain resistance No method 3 4 3 – 5 4

Resistance to acidic/ caustic conditions

D2248, D1308 5 3 3 – 5

4

Resistance to water immersion D870 4 4 4 3

Humidity resistance D1735, D2247, D4585, G60

4 4 4 4

Abrasion resistance D4060, D968 5 3 3 – 5 4

Resistance to industrial pollution D1308, G87 5 3 3 3

Corrosion resistance (salt spray)

B117, G85 4 3 4 4

Flexibility/drawability D2794, D3281, D4145, D522, D4146

5 2 3 – 5 3

Dry heat resistance No method 5 3 4 4

Gloss retention, 10 years Florida, 45° south

G7, D1014, D523 2 – 3 3 N/A 3-4

Chalk, 10 years Florida, 45° south

G7, D1014, D4214 2 – 3 3 N/A 3-4

Color retention, 10 years Florida, 45° south

G7, D1014, D2244 2 – 3 3 N/A 3-4

5 = Excellent, 4 = Very good, 3 = Good, 2 = Fair, 1 = PoorCourtesy of the National Coil Coating Association, www.coilcoating.org

Material Safety Data Sheets (MSDS) are available by emailing us or contacting your sales representative. Always consult the appropriate MSDS before using any of our products. Neither Solvay Specialty Polymers nor any of its affiliates makes any warranty, express or implied, including merchantability or fitness for use, or accepts any liability in connection with this product, related information or its use. Some applications of which Solvay’s products may be proposed to be used are regulated or restricted by applicable laws and regulations or by national or international standards and in some cases by Solvay’s recommendation, including applications of food/feed, water treatment, medical, pharmaceuticals, and personal care. Only products designated as part of the Solviva® family of biomaterials may be considered as candidates for use in implantable medical devices. The user alone must finally determine suitability of any information or products for any contemplated use in compliance with applicable law, the manner of use and whether any patents are infringed. The information and the products are for use by technically skilled persons at their own discretion and risk and does not relate to the use of this product in combination with any other substance or any other process. This is not a license under any patent or other proprietary right. All trademarks and registered trademarks are property of the companies that comprise Solvay Group or their respective owners.

© 2013 Solvay Specialty Polymers. All rights reserved. D 03/2012 | R 09/2013 | Version 2.1

SpecialtyPolymers.EMEA@solvay.com | Europe, Middle East and Africa

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SpecialtyPolymers.Asia@solvay.com | Asia Pacific

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table 2 continued: Comparative properties and performance chart

properties aStm method Silicone

polyester

polyvinylidene Fluoride ( pVDF )

acrylic latex polyurethane

Impact resistance D2794 3 4 3 4

Mar resistance D3363, D2197 4 3 3 3

Metal marking resistance No method 4 3 4 3

Resistance to pressure mottling in coil

D3003 4 3 3 3

Solvent (MEK) resistance D5402 5 3 4 3

Grease and oil resistance D5402, D1308 4 4 3 3

Stain resistance No method 4 4 3 3

Resistance to acidic/ caustic conditions

D2248, D1308 3 4 3 3

Resistance to water immersion D870 4 4 4 3

Humidity resistance D1735, D2247, D4585, G60

4 4 2 3

Abrasion resistance D4060, D968 3 4 2 4

Resistance to industrial pollution D1308, G87 3 4 3 3

Corrosion resistance (salt spray)

B117, G85 4 3 3 4

Flexibility/drawability D2794, D3281, D4145, D522,

D4146

2 4 3 4

Dry heat resistance No method 4 4 4 5

Gloss retention, 10 years Florida, 45° south

G7, D1014, D523 4 5 3 – 4 3 – 4

Chalk, 10 years Florida, 45° south

G7, D1014, D4214 4 5 3 – 4 3 – 4

Color retention, 10 years Florida, 45° south

G7, D1014, D2244 4 5 3 – 4 3 – 4

5 = Excellent, 4 = Very good, 3 = Good, 2 = Fair, 1 = PoorCourtesy of the National Coil Coating Association, www.coilcoating.org