PES-CHEM 511 UCEN Technical Data Sheet

PES-CHEM 511 UCEN is a high build solvent-free epoxy novolac 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.

PES-CHEM 511 UCEN

PES-CHEM 511 UCEN is:

• A solvent-free epoxy novolac coating
• Hand or spray applied
• Resistant to 98% sulfuric acid & 36% hydrochloric acid in immersion conditions

Typical applications

• Chemical containment
• Chemical drains and channels
• Tank linings
• Internal pipe surfaces
• Process vessels
• Pumps

Surface Preparation

Metallic Substrates

1. All oil and grease must be removed from the surface using an appropriate cleaning such as MEK.
2. All surfaces must be abrasive blasted to SSPC SP10/NACE 2 minimum blast profile of 3mil using an angular abrasive.
3. Once blast cleaned, the surface must be de-greased and cleaned using MEK or similar type material.
4. All surfaces must be coated before gingering or oxidation occurs.

PLEASE NOTE: For salt contaminated surfaces the substrate must be pressure washed with clean water and checked for salt contamination, please refer to the surface preparation and pre-application guide for further information.

Existing Concrete

1. If the concrete surface is contaminated, pressure wash using clean water.
2. Once the concrete is dry, lightly abrasive blast or scarify taking care not to expose the aggregate.
3. Clean all dust and debris from the surface and prime with PES-Chem 503 SPEP (low viscosity epoxy primer).
4. Apply 503 SPEP at 6mil WFT, leave the cure for 3 hours (68°F) before overcoating.

New Concrete

1. Allow new concrete to cure for a minimum of 21 days and treat to remove any surface laitance.
2. Check the moisture content of the concrete prior to coating (8% moisture content or below).
3. Lightly scarify the surface taking care not to expose the aggregate.
4. Clean all dust and debris from the surface and prime with PES-Chem 503 SPEP (low viscosity epoxy primer).
5. Apply 503 SPEP at 6mil WFT, leave to cure for 3 hours (68°F) before overcoating.

Mixing

Prior to mixing please ensure the following:

1. The base component is at a temperature between 60-70°F.
2. The ambient & surface temperature is above 50°F.
3. The ambient & surface temperatures are not less than 6°F above the dew point.

Once these 3 checks have been met, please proceed with mixing the product.

1. Transfer the contents of the Activator unit in the Base container.
2. Using an electric paddle mixer, mix the 2 components until a uniform material is free of any streaks is achieved.
3. From the commencement of mixing the whole of the material should be used within 25 minutes at 68°F.

Application

Brush or roller applications

1. Pour the mixed material into a paint kettle or paint tray (this will maximize the usable life)
2. Using a 2″ wide synthetic brush, stripe coat all edges, joints, corners and equipment with the mixed material. The stripe coat must be approximately 4″ wide, at 12-16mil wet film thickness.
3. Once the stripe coat has cured sufficiently and is capable of being overcoated, apply the 1st coat of mixed product to all surfaces at 16-20mil wet film thickness.
4. Once the 1^st coat of material has cured sufficiently, approximately 4 hours at 68°F, apply a 2^nd coat of material to all surfaces at 16-20mil wet film thickness.

Spray Applications

1. Spray application should be carried out by airless spray using a 45:1 ratio pump with an attached hot water pump to heat the spray lines.
2. The temperature around the spray lines should be kept around 77-95°F.
3. Spray pressure of 3600psi and a tip size of 19-23 thou should be used.
4. Use as short a line as possible to maintain product temperature (maximum 26foot).
5. Circulate the product for a short time to achieve temperature equilibrium.
6. Using a 2″ wide synthetic brush, stripe coat all edges, joints, corners and equipment with the mixed material. The stripe coat must be approximately 4″ wide, at 12-16mil wet film thickness.
7. Once the stripe coat has cured sufficiently and is capable of being overcoated, apply the 1^st coat of mixed product to all surfaces at 16-20mil wet film thickness.
8. Once the 1^st coat of material has cured sufficiently, approximately 4 hours at 68°F, apply a 2^nd coat of material to all surfaces at 16-20mil wet film thickness.

Coverage Rates

1.1 US gallon (4ltrs) of fully mixed product will give the following coverage rates –

• 107ft² at 16mil – 10m² at 400 microns
• 85ft² at 20mil – 8m² at 500 microns

4.2 US gallon (16ltrs) of fully mixed product will give the following coverage rates –

• 402ft² at 16mil – 37.5m² at 400 microns
• 343ft² at 20mil – 32m² at 500 microns

Please note that the coverage rates quoted are theoretical and do not take into consideration the profile or condition of the surface being repaired.

Cure Times

At 68°F 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:

• Usable life – 25 minutes
• Minimum overcoating time – 4 hours
• Maximum overcoating time – 12 hours
• Water/sea water immersion – 4 days
• Chemical immersion – 7 days

For Optimum Performance

After an initial curing period of at least 12 hours at 68°F, raising the cure temperature progressively to 140-175° for up to 8 hours will result in improved mechanical, thermal and chemical resistance properties.

Pack Sizes

This product is available in the following pack sizes –

• 1.1 US gallons (4ltrs), 4.2 US Gallons (16ltrs)

Color

• Base component – Dark Grey or Red
• Activator component – Amber

Over-Coating Times

• Minimum – the material can be over-coated as soon as it is touch dry, approximately 4 hours at 68°F.
• Maximum – the over-coating time should not exceed 12 hours.
• Where the maximum over-coating time is exceeded, the material should be allowed to harden before being abraded or flash blasted to remove surface contamination.

Storage Life

5 years if unopened and store in normal dry conditions (60-86°F)

Other Technical Documents

• Quick Application Guide – Brush, roller  spray applications
• Safety Data Sheets – Base & Activator components
• Product Specification Sheet – Technical Performance Information

Health and Safety

Observe safety practices at all times. Protective gloves, goggles & a disposable coverall must be worn during the mixing and application of this product. Before mixing and applying the material ensure you have read the fully detailed Safety Data Sheet.

Legal Notice:

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 whose methods we have no control. It is the responsibility of the customer to determine if the product is suitable for use. PES accepts no liability arising out of the use of this information or the product described herein.

For more information about PES 511, don’t hesitate to contact us here at PES Solutions with the link below!