PES-CHEM 511 UCEN
Pes-chem 511 UCEN is a high build solvent-free epoxy novalac coating designed to provide outstanding chemical and corrosion protection of steel and concrete structures. The coating is particularly resistant to attack by strong acids including 98% sulfuric acid.
Chemical containment and bund areas, tanks, pumps, chemical drains and channels and pipework.
1. Metallic Substrates
All oil and grease must be removed from the surface to be coated using an appropriate cleaner such as MEK. The surface should be abrasive blasted to NACE #2, SSPC-SP10, or Swedish Standard SA2.5 and a minimum blast profile of 3-4 Mils (75 Microns) using an angular abrasive. Once blast cleaned, the surface must be washed with MEK prior to brush blasting to remove the surface salts. This process must be repeated until all ingrained salts have been sweated out of the surface and removed.
Remove any contamination and lightly abrasive blast or scarify taking care not to expose the aggregate before application of PES-Chem UCEN. Allow new concrete to cure for a minimum of 21 days and likewise treat to remove any surface laitance before coating. For optimum results on damp concrete, condition with PES-Chem Damp seal. Where the concrete is dry but highly porous, it is recommended to condition with PES-Chem EPXF.
Mixing and Application
Warm the Base to 59-77ºF (15-25ºC) before mixing and do not apply when the ambient or substrate temperature is less than 54ºF (12ºC) or when the relative humidity is greater than 90%.
Pour approximately half of the contents of the Activator unit into the Base container and mix carefully using a spatula. Once the two materials have been blended, add the remainder of the Activator ensuring that as much material is drained from the activator container as possible. Mix the two components together until they are streak-free. The material, once fully mixed, has an application time of 30-40 minutes at 68ºF (20ºC). This time will be extended at lower temperatures and shortened at higher ones.
Apply the mixed material onto the prepared surface by brush or roller. This should be in two coats at a target thickness of 10 Mils. (250 Microns), per coat, using a practical coverage rate of 37 square feet (3.5 Sq Meters) per liter per coat. On rough concrete surfaces, the coverage rate of the first layer in particular will be significantly reduced.
Apply the second coat as soon as possible after the first coat is dry and not in excess of 6 hours. Where the maximum over-coating interval is exceeded, the first coat should be sweep blasted and cleaned prior to over-coating.
Where small volume mixes are required, the mixing ration is 4:1 by weight or 3:1 by volume.
At 68ºF (20ºC) the applied materials should be allowed to harden for the times indicated below before being subjected to the conditions indicated. These times will be extended at lower temperatures and reduced at higher temperatures.
Useable Life: 30-40 Minutes
Movement without Load or Immersion: 6 Hours
Light Loading: 12 Hours
Full Loading / Water Immersion: 4 Days
Chemical Contact: 7 Days
For Optimum Performance
After an initial curing period of at least 12 hours at 68ºF (20ºC), raising the cure temperature progressively to 140-176ºF (60-80ºC) for up to 8 hours will result in improved mechanical, thermal and chemical resistance properties.
Technical Data and Performance
5 years if unopened and stored in normal dry conditions 59-86°F (15-30°)
Health and Safety
Please ensure good practice is observed at all times during the mixing and application of this product. Protective gloves and other recommended personal protective equipment must be worn during the mixing and application of this product. Before mixing and applying the material please ensure you have read and fully understood the detailed Material Safety Data Sheet.
The data contained within this Technical Data Sheet is furnished for information only and is believed to be reliable at the time of issue. We cannot assume responsibility for results obtained by others over the whose methods we have no control. It is the responsibility of the customer to determine the products suitability for use. Polymeric Engineered Solutions accepts no liability arising out of the use of this information or the product described herein.
POLYMERIC ENGINEERED SOLUTINS, 5401 HWY 21 W, BRYAN, TX 77803
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