PC-517 Poly-Chemcure Glass Filled Epoxy Mastic Coating

A two component, very high solids, high build, glass filled, Epoxy Mastic. PC-517 is based on a cycloaliphatic polyamine cured Epoxy. PC-517 Epoxy can be used as a One Coat-20 mil dry film Epoxy Ion horizontal surfaces. This unique coating has excellent chemical, abrasion, impact, and weather resistance with outstanding adhesion to marginally prepared surfaces as well as clean blasted surfaces.

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1. Self priming on steel
2. Can be applied on damp surfaces
3. Cures at temperatures down to 40 F.
4. Excellent chemical resistance to acids, caustics, and many solvents
5. Performs well over epoxy mortars and concrete surfaces
6. Excellent as a secondary containment coating
7. Excellent as a coating for internal tank linings
8. Meets all EPA and other air pollution regulations. V.O.C. is less than one pound per gallon
9. Outstanding impact, flexibility and abrasion resistance
10. Capable of high film build, wraps around edges in one coat
11. Very resin rich, excellent gloss when sprayed
12. USDA Approved
ColorBrick Red
Dark Gray
Lt. Gray
Med. Gray
60 GlossHigh Gloss
Volume Solids92% 2%
Theoretical Coverage (per gallon at 1 mil)1475ft
Recommended Thickness5 – 10 dry mils at 145 – 295 sq. ft. per gal.
Mixing Ratio4:1 – 4 parts of Base (Part A) to 1 part of Hardener (Part B)
Induction TimeNone
Up to 20% S-74 per mixed gallon. Gloss will exhibit slight variation when brushed or rolled due to orientation of fillers. This will not effect performance.
Pot Life2 hours at 75 F
Recoat Time at 75 F8 hours
ApplicationSpray, roll or brush
Application Temperature50 to 120F
Dry Service Temperature280F
Min. Shelf Life12 months
Packaging1 gal. kit
5 gal. units
V.O.C0.62 LBS/gallon
72 GMS/Liter
Cure Time1 – 2 hrs. at 90 F
3 – 4 hrs. at 75 F
8 – 12 hrs. at 45 F
Recommended for structural steel, tank linings, vessels, equipment, racks, storage tanks, towers, in chemical processing plants, pulp and paper mills, sewage and waste water treatment facilities, fertilizer plants, refineries, electric generating stations, coal handling sites, mines and marine installations.
Surface Preparation
Best Method is an abrasive blast (SSPC-SP6, or better), but PC-517 will perform well over minimally prepared surfaces. Because of the lack of “standards” for minimal surface preparation, test applications should be made to determine adequate surface cleanliness and compatibility with existing paint.

A. Steel: Remove oil, grease and other chemical contaminants by solvent wipe or steam cleaning. Abrasive blast to SSPC-SP6, or better.

B. Galvanized Steel: Solvent clean per SSPC-SP1 or steam clean. Apply VE-180 Vinyl Wash Etch Primer/Conditioner or abrasive sweep blast to achieve a profile.

C. Previously Painted Surfaces: Solvent clean per SSPC-SP1. Remove loose existing paint by wire brush or other hand tools. Feather edges. Make test application to check for compatibility.

D. Concrete: Do not use form release agents, surface hardeners or curing compounds.

All laitance efflorescence, chemical contaminants, grease, oil and other foreign material must be removed. The prepared surface must be clean and structurally sound. Methods such as abrasive blast, high pressure water blast, Blastrac, scarifying, scrabbling, acid etch/rinse, etc. can be used. Voids, spalled areas, and other defects should be grouted with Poly-Crete epoxy grout formula, then rubbed smooth before proceeding.

After concrete surface preparation is completed, prime the area with Prime-Crete PC-149 or PC-155 Concrete Primer per label instructions.

E. Epoxy Mortars: Surface to be coated should be free of all contamination. Observe the manufacturer’s recoat time recommendations.

Mixing Instructions, Application Procedure & Cure Time
Mixing Instructions
Stir each component to a uniform consistency using an explosion proof variable speed drill with a Jiffy mixer. Then mix 4 parts Base A with 1 part Hardener B for 3 minutes using the powered Jiffy mixer. PC- 517 may be reduced up to 20% S-74 per mixed gallon. Do not substitute reducers.Application Procedure
1. Airless Spray
Gun – Graco – 205-591
Tip Range. – 0.019″-0.025″ at 2500 PSI
Hose – 1/2″ ID

2. Conventional Spray
Gun – DeVilbiss MBC 510 or JGA
Fluid Tip-“E”
Air Cap – 64 or 704
Atomizing Pressure – 40 PSI
Pot Pressure – 50 PSI
Hose-1/2″ ID

3. Brush – use pure bristle brush

4. Roller – medium nap solvent resistant phenolic core

When spraying, use a 50% overlapping Crosshatch pattern to minimize the occurrence of pinholes. Do not apply to surfaces below 50 F. or above 120 F. Do not apply over dew or frost. Do not apply if the temperature is within 5 of the Dew Point.

Cure Time
Times may be longer for thickness above 5 dry mils. For safety and proper product curing, good ventilation is necessary when painting indoors or in confined areas. Be sure the batch numbers are all the same to provide uniform color. Epoxy coatings may yellow or darken during application and after final cure. This will effect the color but will have no effect on the performance of the product. Heaters that emit carbon dioxide and carbon monoxide can cause the coating to yellow. For maximum exterior gloss and color retention apply a topcoat of CT-370 polyurethane.

PC-517 Base is flammable. PC-517 Hardener is corrosive. Keep away from all sources of ignition during mixing, application and cure. The Hardener (Part B) and mixtures of Base (Part A) with Hardener (Part B) can cause eye and skin burns as well as allergic reactions. The use of goggles, fresh air masks or NOISH approved respirators, protective skin cream and protective clothing is a recommended standard practice when spraying coatings. This product is sold without warranty as to performance expressed or implied. Users are urged to make their own tests to determine the suitability for their particular conditions.

For Professional use only.
For Industrial use only.
Keep Away from Children.

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