Page 60 - Industrial Coatings
P. 60
POLYCOAT POLYEURO® MH752FR
PRODUCTS
Fire Retardant
A Division of American Polymers Corp. Two Component Aromatic Hybrid
Polyurethane Protective Coating
DESCRIPTION TECHNICAL DATA
Polyeuro® MH752FR is a Class 1 fire-rated, fast set, rapid Mix Ratio by Volume .......................................... 1A : 1B
curing, aromatic, two component hybrid polyurea/polyurethane Pot Life @ 150°F ................................................ 4 - 6 seconds
spray designed to be applied over EPS, wood, and many Tack Free Time (150 mils thick) ............................... 60-120seconds
other surfaces. Its excellent balance of stiffness and impact Recoat Time ........................................................ 0-12 hours
resistance provides excellent plastic “shell-like†protection Viscosity at 150-160°F (66.5-71°C), Brookfield:
for delicate foams and EPS. Polyeuro® MH752FR’s chemical Part-A ................................................................. 150 ± 20 cps
design allows fast “user-friendly†application with excellent Part-B ................................................................. 250 ± 50 cps
flow and appearance. Density (Side A & B Combined) ........................ 10.89 lbs/gal
Flash Point .......................................................... >200°F
FEATURES Hardness, ASTM D-2240* ................................. 75 ± 5 D
Tensile, ASTM 412-C* ........................................ 2500 ± 200psi
ï¶Meets ASTM E-84 Class 1 Fire Test Criteria Elongation, ASTM 412-C* .................................. 10% ± 5%
Tear, ASTM 624-C* ............................................ 400 ± 30 pli
ï¶Plastic “Shell-Like†Protection ï¶Low Shrinkage Service Temperature ......................................... -40°F to 300°F
(Results based on lab drawn film)
ï¶100% Solids ï¶Zero VOC
(*These physical properties from sample sprayed with Graco Foam
ï¶Meets USDA Criteria ï¶Fast Cure Cat 200 @ 2000 psi minimum, with Gusmer GX7-400 mechanical purge
gun @ 150-160°F. Different machine and parameter will change these
ï¶Excellent Thermal Stability ï¶High Productivity properties. User should perform their own independent testing as
properties are approximate.)
ï¶Excellent Chemical Protection
used, it is important to consider the possibility of substrate
ï¶Excellent Cold Temperature Impact absorption, which may affect the adhesion of the coating
system, regardless of the surface preparation. Polycoat
TYPICAL USES ï¶Speaker Boxes recognizes the potential for unique substrates from one
ï¶Decorations / Props ï¶Dock Flotations project to another. The following information is for general
ï¶Architectural Shapes ï¶Wood Pallets / Crates reference, and for project-specific questions, contact Polycoat.
ï¶Steel Coating ï¶Wood Cabinets New and Old Concrete:
ï¶Food Processing Plants Refer to SSPC-SP13/NACE 6, or ICRI 03732: CSP 3-5. New
concrete must be cured for 28 days prior to product applica-
COLORS tion. Surface must be clean, dry, sound and offer sufficient
Clear/Neutral. Custom colors are available upon request. profile for product adhesion. Remove all dust, dirt, oil, form
Color Packs, when used, must be added to Part-B. release agents, curing compounds, salts, efflorescence,
laitance and other foreign matter by shotblasting and/or
Due to its aromatic composition, Polyeuro® MH752FR will suitable chemical means, in accordance with local chemical
tend to yellow or darken in color and will become flat after regulations. Rinse thoroughly, to achieve a pH between 8.0
exposure to UV light. Polyeuro® MH752FR may be and 11.0. Allow to dry completely. If old concrete has a surface
topcoated within twelve hours of application with an ali- that has deteriorated to an unacceptably rough surface,
phatic polyurethane/polyurea coating for a colorfast finish. Polycoat Products PC-260 or a mixture of Polyprime 21 and
sand should be used as a repair agent for cracks, spalls, bug
PACKAGING holes and voids. Upon full cure of the repair agent, prime the
10 gallon kit: One 5 gallon pail of Part-A (Isocyanate side) and entire surface intended for coating.
one 5 gallon pail of Part-B (Resin side). Concrete Surface Preparation Reference:
ASTM D4258 - Standard practice for cleaning concrete
100 gallon kit: One 50 gallon drum of Part-A (Isocyanate side) ASTM D4259 - Standard practice for abrading concrete
and one 50 gallon drum of Part-B (Resin side). ASTM D4260 - Standard practice for etching concrete
ASTM F1869 - Standard test method for measuring moisture
COVERAGE vapor emission rate of concrete
Polyeuro® MH752FR may be applied at any rate to achieve ICRI 03732 - Concrete surface preparation
desired thickness. Theoretical coverage for 1 mil thickness Wood:
is one gallon per 1600 sq. ft. All wood should be clean, dry and free of any knots, splinters,
SURFACE PREPARATION
In general, coating performance and adhesion are directly
proportional to surface preparation. Most failures in the
performance of surface coatings can be attributed to poor
surface preparation. Polyurea coatings rely on the structural
strength of the substrate to which they are applied. All sur-
faces must be free of dust, dirt, oil, grease, rust, corrosion and
other contaminants. When coating substrates previously
14722 Spring Avenue  Santa Fe Springs, CA 90670-5108 USA  Tel: 562/802-8834  Fax: 562/921-7363  www.polycoatusa.com  Copyright  September 2011 Polycoat Products
