Low Temperature Form Coating
Armorgard 541 is a 100 % solids, thixotropic, primerless, odorless epoxy coating for foam patterns and molds used in precast concrete applications. Armorgard 541 is formulated to provide a hard, tough coating for EPS foam and Styrofoam without the use of hazardous – foam damaging solvents. Use of Armorgard 541 transforms a “rough” foam structure into a hard, sandable surface, creating an “architectural” quality cast.
Armorgard 541 provides a convenient work life. Armorgard 541 was designed from conception to be the ideal foam coating. The product is colored for an easy visual check of thickness.
Armorgard 541 can be easily applied with a roller or brush. Normal application thickness is 15-30 mil (0.38-0.76 mm). Application varies depending on the porosity and roughness of the surface. A single build may be applied to horizontal surfaces up to 1/8" thick (125 mil or 0.3 cm). Armorgard 541 is conveniently packaged in 4 gallon, pre-measured kits, or bulk 5 gallon, 55 gallon and 275 gallon totes.
|MIX RATIO, pbv||2/1|
|ASTM D 2196
|ASTM D 2393
|ASTM D 2471
|APPLICATION TEMPERATURE, °F
|COVERAGE* @ 15 mil, ft2/gal||107|
|HARDNESS (ASTM D-2240), Shore D
after 16 hours @ 70 °F
after 16 hours @ 50 °F
after 24 hours @ 32 °F
|MAXIMUM SERVICE TEMPERATURE, °F(°C)||150 (66)|
|TENSILE STRENGTH, psi||7,600||ASTM D-638|
|TENSILE MODULUS, psi||100,900||ASTM D-638|
|ELONGATION @ BREAK, %||7.7||ASTM D-638|
|* Varies with porosity of surface|
To achieve excellent adhesion, the substrate should be free of all loose and foreign material and should be clean. Oils, grease, waxes or other contaminates must be removed prior to coating. These can be removed with a solvent wipe using isopropyl alcohol or acetone or an application of warm (120-140 °F) caustic detergent followed by a hot water rinse. Repeat this procedure until the water does not “bead up” on the form. 505LT will not bond to a contaminated surface.
Relative humidity and dew point must be determined before application to avoid adhesion failures. The dew point is used to predict the substrate temperature at which air begins to condense, in the form of water, on the substrate. Never apply a coating unless the form surface temperature is 5 °F above the dew point. This temperature difference must be observed until the epoxy coating is cured to a tack-free state. A dew point calculation chart is available from a Copps Technical Representative.
The storage temperature of 505LT will greatly effect the ease of mixing, application and curing time. For best results, 505LT should be stored at (50-70 °F or 10-22 °C) for at least 24 hours before use. Mix 2 parts A (resin) to 1 part B (hardener) for 3 minutes using a Jiffy Mixer and a slow speed drill. Mix at slow speed (less than 850 rpm) to avoid air entrainment. DO NOT mix more material than can be used within the stated working time. REMEMBER - you will have less working time at higher temperatures.
505LT can be applied with a squeegee, brush, non-shedding roller or a grooved fiberglass roller. Re-coating a used form requires a light sanding to remove concrete residue and improve sur
face profile and adhesion.
Caution: Mix and pour in a well-ventilated area. Avoid contact with skin and eyes. If contact does occur, wash skin with soap and water and seek medical help. Read and understand all CAUTIONS on container labels and material safety data sheets before using this material.
Avoid breathing of vapors. Forced local exhaust is recommended to effectively minimize exposure. NIOSH approved, organic vapor respirators and forced exhaust are recommended in confined areas, or when conditions (such as heated polymers, sanding) may cause high vapor concentrations. DO NOT WELD ON, BURN OR TORCH ON OR NEAR, ANY EPOXY MATERIAL. HAZARDOUS VAPOR IS RELEASED WHEN AN EPOXY IS BURNED.
Warranty and Disclaimer
Copps Industries, Inc. gives no warranty, express or implied, and all products are sold upon condition that purchasers will make their own tests to determine the quality and suitability of the product. Copps Industries, Inc. shall be in no way responsible for the proper use and service of the product. The information given in this publication is considered to be accurate and reliable and is provided as a service only. Physical properties shown are typical. Actual properties are dependent on curing conditions and degree of cure. Any information or suggestions given are without warranty of any kind and purchasers are solely responsible for any loss arising from the use of such information or suggestions. No information or suggestions given by us shall be deemed to be a recommendation to use any product in conflict with any existing patent rights.