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PRODUCT NUMBER

PRODUCT NAME

14-17038

BLACK HI BUILD EPOXY MASTIC COATING

GENERAL DESCRIPTION

Pruett-Schaffer’s #14-17038 Black epoxy Mastic is a high-build, two component, polyamidoamine-cured epoxy for use as a heavy duty maintenance or encapsulation coating.  It is designed as a brush or spray applied topcoat, intermediate coating, or direct-to-metal coating.  It  has good exterior durability, very good adhesion over a wide variety of substrates, and exceptional corrosion and chemical resistance.

 

RECOMMENDED USES

Use to protect machinery, tanks, and structures from corrosion in aggressive environments where chemicals, salt, water, fuels, and oils are present.  Formulated to allow high film build in one pass to protect hard to cover sharp edges.  Suitable for topcoating if desired with a wide variety of epoxy, urethane, vinyl, or acrylic emulsion topcoats.

 

SURFACE PREPARATION

For severe service, metal substrates should be blasted to an SSPC-SP-10 white metal blast with a 1.0 +/- .5 mil blast profile, and applied over epoxy primer.  An SP-6 commercial blast may be sufficient for many repair or DTM applications with less severe requirements.  This coating is very tolerant of poor surface preparation. For tightly adhering existing coatings, degreasing and hand tool cleaning, power washing, brush blasting, sanding, or a combination of these methods may be acceptable.  All surfaces to be coated must be clean, dry and free of oil and grease, loose rust or paint, weld spatter, burning slag, dust, and chalk.

 

MIXING AND POT LIFE

The recommended minimum application temperature when using 14-B Hardener is 55 0F. Between 55-40 0F, add cold weather accelerator (Pruett-Schaffer part number #14-13715) to 14-17038-A/14-B at a rate of 1 pint per 5 gallons mixed system or mix   14-17038-A with 14-W Winter Hardener (see Table below). When air or substrate temperatures are below 40 0F use 14-17038-A only with 14-W Winter Hardener.

 

   Air or substrate                 Hardener             

   Temperature, 0F                                 

          > 55                                14-B

        55 - 40                    14-B with Accelerator

                                       or 14-W

          < 40                                14-W

 

Mix 4 parts by volume #14-17038-A with 1 part 14-B or 14-W Winter Hardener. Use immediately, there is no induction time. Pot life when mixed in 5-gallon lots: 6-8 hours at 77 0F; 2 hours at 90 0F. Pot life will shorten markedly if cold weather accelerator is added.

 

THINNING AND CLEANUP

 

Thin and cleanup equipment with xylol or toluol.  Add a little solvent at a time to the mixed system with constant gentle agitation to a maximum of 5% by volume.

 

APPLICATION EQUIPMENT

May be applied by brush, roller, or airless spray.  Airless spray gives the best results, use .015-.020 inch tip size.  Apply 5-9 mils wet film thickness to yield 4-7 mils dry film thickness.  Brushes should be of polyester or nylon construction. Application using cup-type spray gun is not recommended.

CURE TIMES & TEMPERATURES

Cures set-to-touch in 4-5 hours at 77 0F; 2 hr at 90 0F, 24-48 hr at < 40 0F.  Recoat or topcoat within 8-48 hours or reduced adhesion of the second coat may result. Allow 7-10 days cure at 70 0F before placing into severe service, longer if ambient temperature is lower than 40 0F.

 

ENVIRONMENTAL

his product meets current air pollution regulations regarding hydrocarbon and ozone reactive emissions.  It is VOC compliant for the architectural maintenance industry, contains no chromate or zinc, and complies with current federal regulations regarding the use of lead in paint.

 

PHYSICAL PARAMETERS

VOC, U.S. EPA Reference Method 24:

1.22 lb/gal mixed system, with 14-B

ORGANIC SOLVENT, % WEIGHT:

12.5 mixed system

WEIGHT PER GALLON, ASTM D-1475:

11.38 lbs mixed system

NONVOLATILE, mixed system:

   By weight :    88.7 +/- 2.0 %

   By volume:   82.6 +/- 1.0%

THEORETICAL COVERAGE:

1324 ft2/gallon/mil, dry film,

INITIAL GLOSS, 600, ASTM D-523:

50-60

VISCOSITY, mixed system, ASTM D-562:

80-90 Krebs Units

COLOR, ASTM D-1729 :Fed 595b: 17038

POT LIFE, mixed in 5 gal lots:

6-8 hrs @ 70 0F; 2 hrs @ 90 0F

Pot life will shorten if cold weather accelerator is added.

FLASH POINT, TAG CC: 81 0F

 

 

THIS INFORMATION RESULTS FROM TESTS CONDUCTED IN A LABORATORY UNDER LABORATORY CONDITIONS.  DIFFERENT RESULTS MAY BE OBTAINED IN COMMERCIAL USE OF THIS PRODUCT UNDER FACTORY OR FIELD CONDITIONS.  PRUETT-SCHAFFER MAKES NO WARRANTY CONCERNING THE SUITABILITY OF THIS PRODUCT FOR THE END USE CONTEMPLATED BY THE BUYER, EXCEPT THAT THE PRODUCT SHALL BE IN COMPLIANCE WITH THE TECHNICAL SPECIFICATIONS PRESENTED HEREIN.

REVISED 03-21-2001