Some Technical Information on Liquid Roof and Liquid Rubber(R)
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Weatherometer-2000 hours (ASTM D4459-8-03)
Pot Life-9;4-10 hours depending on temperature.
Cure Rate-(18-24) hours to touch;48-54 hours to walk
on and 3-7 days full cure.
Liquid Roof and Liquid
Rubber need temperatures above 55 degrees to cure. The
temps can go below 55 but the product will not begin
curing again until the temp's go above 55 degrees.
Chemical Resistance-Cured EPDM rubber is resistant to acids, alkalis and polar solvents
Cure system-Two-component Peroxide initiated
Heat Resistance 302 degrees F (150 degrees C)
Mixing Liquid Roof With The Catalyst |
Physical Properties
The physical properties of EPDM Liquid Rubber(R) are typical of its EPDM chemistry. The outstanding characteristics include:
Extreme high resistance to penetration of water, Ultra Violet and Ozone stable, excellent long term aging properties.
Very broad temperature tolerance range (from 300 degrees F to minus 62 degrees F). Acid and alkali resistant
Withstands ponding water even when not cured
Spreading Rate A 20 mil dry film will result when liquid is applied at the rate of 42 sq. ft per gallon on a smooth surface.
A rate of 45 sq. ft allows for average roughness.
Weight/gallon 8 pounds (mixed)
Tensile 680 psi
Elongation 180-200%
Brittle Point -62 degrees F
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Cure Mechanism-This rate is determined by temperature and the availability of oxygen. Oxygen is necessary to activate the catalyst, which promotes peroxide decomposition at lower temperatures. The cure mechanism in EPDM Liquid Rubber will vary from active to inactive determined by temperature. Broad day-night temperature swings in spring and fall will not compromise the final physical properties of the EPDM Liquid Rubber membrane.
Technical Properties of EPDM
| Polymer Properties |
| Specific Gravity | 0.87 |
| Color | Available white or black |
| Vulcanizate Properties |
| Hardness, Durometer | 30A to 90A |
| Tensile Strength, Mpa (psi) | 6.9 to 20.7 (1000-3000) |
| Elongation, % | 100-600 |
| Compression Set B, % | 20-60 * |
| Useful Temperature Range | -50 to 150ºC (-60 to 300ºF) |
| Brittle Point | -50ºC (-60ºF) ** |
| Volume Resistivity, ohm-cm | 1016 to 1017 |
| Dielectric Strength,v/mil | 500-1000 |
| Dielectric Constant | 2.2 to 3.0 |
| Tear Resistance | Fair to Good |
| Abrasion Resistance | Good to Excellent |
| Resilience | Fair to Good |
| Adhesion to Metal | Fair |
| Environmental Resistances |
| Ozone | Excellent |
| Oxygen | Excellent |
| Oils and Gasoline | Poor |
| Water | Excellent |
| Steam | Excellent |
| Oxygenated Solvents | Good to Excellent |
| Halogenated Solvents | Fair to Poor |
| Phosphate Fluids | Good to Excellent |
| Alkali's | Good to Excellent |
| Acids, Dilute | Excellent |
| Acids, Concentrated | Good to Excellent |
| Electrical Properties | Excellent |
| Features |
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| Advantages |
Electrical Properties
Low Temperature Flexibility
Resistance to Weathering, Water, Steam, Heat
Cost
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| Limitations |
Hydrocarbon resistance
Temperature above 177ºC (350ºF)
Flame Resistance
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