PROTXCOAT 361 Thermal Barrier
high build insulative coating
ProTXcoat 361 Thermal Barrier is a high build solvent-free low emissivity coating designed to reduce heat transfer from underlying metal surfaces thereby reducing heat loss and the risk of burns through personal contact. The coating has been designed to be applied to hot operating surfaces ranging from 80°C to 140°C.
- Solvent free epoxy with high build capability
- Reduces surface temperatures from 140° (284°F) to below 55°C (130°F).
- Apply to process surfaces in operation from 80°C to 140° C..
Typical applications
External pipe surfaces, Fan housings, Tank externals, Mixing vessels, Process vessels, Heat Exchangers and Separators Ovens
TECHNICAL SPECIFICATIONS
Surface Preparation
Metallic Substrates – Mechanical abrasion
- All oil and grease must be removed from the surface using an appropriate cleaner such as MEK.
- All surfaces must be mechanically abraded using handheld grinders to ISO 8501/4 ST3 (SSPC SP3 ST3).
- Once abraded, the surface must be degreased and cleaned using MEK or similar type material.
- All surfaces must be coated before gingering or oxidation occurs.
Metallic Substrates – Hydro-blasting
- All surfaces must be hydro-blasted using clean water at 12,000 psi (850bar) to NACE 5 (SSPC SP13 WJ3-WJ1).
- All surfaces must be coated before gingering or oxidation occurs
Metallic Substrates – Abrasive blast cleaning
- All oil and grease must be removed from the surface using an appropriate cleaner such as MEK.
- All surfaces must be abrasive blasted to ISO 8501/4 Standard SA2.5 (SSPC SP10/ NACE 2) minimum blast profile of 75 microns (3mil) using an angular abrasive.
- Once blast cleaned, the surface must be degreased and cleaned using MEK or similar type material.
- 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.
Mixing
Prior to mixing please ensure the following:
- The base component is at a temperature between 15-25°C (60-77°F).
- The surface temperature is between 60-140°C (140-285°F).
- Transfer the contents of the Activator unit into the Base container.
- Using an electric paddle mixer, mix the 2 components until a uniform material free of any streaks is achieved.
- From the commencement of mixing the whole of the material should be used within 120 minutes at 20°C (68°F).
Application
Brush or roller applications
- Pour the mixed material into a paint kettle or paint tray (this will maximise the usable life).
- Apply the product to the prepared HOT metallic surface using a brush or foam roller.
| Operating temp | 80°C (176°) | 100°C (212°F) | 140°C (285°F) |
| 1 st coat | 250 microns (10mil) | 250 microns (10mil) | 250 microns (10mil) |
| 2nd coat | 500 microns (20mil) | 250 microns (10mil) | 250 microns (10mil) |
| 1rd coat | 500 microns (20mil) | 500 microns (20mil) | 500 microns (20mil) |
| 4 th coat | 750 microns (30mil) | 750 microns (30mil) | 750 microns (30mil) |
| 5th coat | 1mm (40mil) | 1mm (40mil) | 1mm (40mil) |
| 6th coat | N/A | 1mm (40mil) | 1mm (40mil) |
| 7th coat | N/A | 1mm (40mil) | 1mm (40mil) |
| 8th coat | N/A | N/A | 1mm (40mil) |
| TOTAL | 3mm (3/32”) | 4.75mm (3/16”) | 5.75mm (1/4”) |
Technical Specification
Coverage Rates
1ltr (0.25 US gallon) of fully mixed product will give the following coverage rates:
| 1m² at 1mm | 10.75ft² at 40mil |
| 0.5m² at 2mm | 5.3ft² at 80mil |
4ltrs (1.1 US gallon) of fully mixed product will give the following coverage rates:
| 4m² at 1mm | 43ft² at 40mil |
| 2m² at 2mm | 21.5ft² at 80mil |
13ltrs (3.5 US gallon) of fully mixed product will give the following coverage rates
| 13m² at 1mm | 139.75ft² at 40mil |
| 6.5m² at 2mm | 69.8ft² at 80mil |
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
The usable of this material is 120 minutes at 20°C.
Please use the table below as a guide to the minimum overcoating time for the operating temperatures stated.
| 90°C (194°) | 100°C (212°F) | 110°C (230°F) | 120°C (248°F) | 130°C (266°F) | 140°C (284°F) | |
| Overcoat | 10 minutes | 8 minutes | 6 minutes | 4 minutes | 2 minutes | 1 minute |
The maximum overcoating window for any operating temperature is 12 hours.
Over-coating times
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 (15-30°C/ 60-86F°)
Other Technical Documents
| Quick Application Guide | Brush or roller applications |
| Quick Application Guide | Spray application |
| Safety Data Sheets | Base & Activator components |
| Product Specification Sheet | Technical Performance Information |
Health and Safety
Please ensure good practice is observed 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. ProTXcoat accepts no liability arising out of the use of this information or the product described herein.
