Page 175 - Polycoat 1.1 Table of Contents

Colors Aluminum should be blasted with aluminum oxide or sand,
Clear/Neutral. Custom colors are available upon request. and not with steel or metal grit. Excessive blasting may
Color Packs, when used, must be added to Side-B. result in a warped or deformed surface. After blasting, wash
aluminum with a commercially available aluminum cleaner.
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Due to its aromatic composition, Polyeuro 5502 will tend to Allow to dry, then prime.
yellow or darken in color and will become flat after exposure to
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UV light. A topcoat can be applied to Polyeuro 5502 within six BRASS AND COPPER
hours of application with an aliphatic polyurethane/polyurea Brass and copper should be blasted with sand, and not
coating for a colorfast finish. with steel or metal grit. Remove all dust and grease prior to
applying primer.
Coverage
Polyeuro 5502 may be applied at any rate to achieve desired GALVANIZED SURFACES
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thickness. Theoretical coverage for 1 mil (0.254 microns) Clean and degrease any contaminated surfaces before
thickness is one gallon per 1600 sqft (3.78 liters per 149 sqm). priming. Do not blast galvanized surfaces with an abrasive
Estimating Formula: (1600 sqft per gal /Dry Mil Thickness) x grit. An adhesion test is recommended prior to starting the
Solids Content = Application Rate per gallon. project.
Surface Preparation FIBERGLASS REINFORCED PLASTIC
In general, coating performance and adhesion are directly The gel coat should be lightly blasted or sanded with 80 grit
proportional to surface preparation. Most failures in the sandpaper and cleaned.
performance of surface coatings can be attributed to poor
surface preparation. Polyurea coatings rely on the structural PLASTIC FOAMS
strength of the substrate to which they are applied. All surfaces Enhanced adhesion is obtained when the foam is mechanically
must be free of dust, dirt, oil, grease, rust, corrosion and other abraded. When coating polystyrene, do not use a solvent-
contaminants. When coating previously used substrates, it is based primer.
important to consider the possibility of substrate absorption, TEXTILES, CANVAS, FABRICS
which may affect the adhesion of the coating system, Adhesion to most fabrics, geothermal membranes and textiles
regardless of the surface preparation. Polycoat recognizes does not require a primer.
the potential for unique substrates from one project to another.
The following information is for general reference. For project- STAINLESS STEEL
specific questions, contact Polycoat. Stainless steel may be grit blasted and degreased before
priming. Some stainless steel alloys are so inert that it is not
NEW AND OLD CONCRETE possible to achieve a satisfactory bond. An adhesion test is
Refer to SSPC-SP13/NACE 6, or ICRI 03732: CSP 3-5. New recommended prior to starting the project.
concrete must be cured for 28 days prior to product application.
Surface must be clean, dry, sound and offer sufficient profile NEW AND OLD CAST IRON
for product adhesion. Remove all dust, dirt, oil, form release Blast with a steel grit and degrease before priming. Old cast
agents, curing compounds, salts, efflorescence, laitance and iron is difficult to prepare for a satisfactory bond. It can absorb
other foreign matter by shotblasting and/or suitable chemical oil and water soluble contaminants that will keep returning
means, in accordance with local chemical regulations. Rinse to the surface after the coating system has been applied
thoroughly to achieve a pH between 8.0 and 11.0. Allow to dry and affect the coating system adhesion. An adhesion test is
completely. If old concrete has a surface that has deteriorated recommended prior to starting the project.
to an unacceptably rough surface, PC-260 or a mixture of
Polyprime 21 and sand should be used as a repair agent ALL OTHER SURFACES
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for cracks, spalls, bug holes and voids. Upon full cure of the An adhesion test is recommended prior to starting the project.
repair agent, prime the entire surface intended for coating. Mixing
Polyeuro 5502 may NOT be diluted under any circumstances.
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CONCRETE SURFACE PREPARATION REFERENCE ®
ASTM D4258 - Standard practice for cleaning concrete. ASTM Thoroughly mix Polyeuro 5502 Side-B (Resin side) with air
D4259 - Standard practice for abrading concrete. ASTM D4260 - driven power equipment until a homogeneous mixture and
Standard practice for etching concrete. ASTM F1869 - Standard color is attained.
test method for measuring moisture vapor emission rate of Application
concrete. ICRI 03732 - Concrete surface preparation. Both Side-A and Side-B materials should be preconditioned to
WOOD 75-80°F (24-27°C) before application. Recommended surface
All wood should be clean, dry and free of any knots, splinters, temperature must be at least 5°F (3°C) above the dew point.
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oil, grease or other contaminants. Splintered or rough areas Polyeuro 5502 should be applied using a plural component,
should be sanded. Knots should be repaired using PC-260 heated, high pressure 1:1 spray mixing equipment like Graco’s
with sand. Upon full cure of the repair agent, prime the entire Reactor, Glass Craft or other equivalent machine may be used.
surface intended for coating. Both Side-A and Side-B materials should be sprayed at a
minimum of 2000 psi and at temperatures above 150°F (66°C).
STEEL (ATMOSPHERIC AND IMMERSION EXPOSURE) Adequate pressure and temperature should be maintained
Remove all oil, grease, weld spatters and round off any sharp at all times. Polyeuro 5502 should be sprayed in smooth,
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edges from surface. Minimum surface preparation is Near multidirectional passes to improve uniform thickness and
White Metal Blast Cleaning per SSPC-SP10/NACE 2. Optimum appearance.
surface profile is 2-3 mils. Prime and shoot Polyeuro 5502
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onto any bare metal the same day as it is cleaned to minimize Storage ®
any potential flash rusting. Polyeuro 5502 has a shelf life of one (1) year from date of
manufacture in original, factory-sealed containers when stored
indoors at a temperature between 60-95°F (15-35°C). Side-A
ALUMINUM

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