Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Application Area
- Compatible Substrates & Surfaces
- Cure Method
- Recommended Uses
Heresite VR-514 is a heavy duty primer-finish combination material specially formulated for marine/salt water environments — particularly for HVAC equipment, agricultural implements, chemical and wastewater treatment plants. If the VR-514 coated surfaces will be subjected to direct ultraviolet (UV) exposure, a spray-applied topcoat of Heresite UC-5500 series should be applied.
- Coverage
Theoretical coverage is 900 square feet per gallon per dry mil. Coverage rates are estimates and make no allowance for material loss. Actual rates will vary depending on application method, surfaces, etc.
- Surface Preparation
All surfaces must be clean, sound, and free of any oils, dirt, grease, wax and any other contamination that may interfere with coating adhesion. In general, for new construction, the surface should be cleaned by solvent or a cleaner at an elevated temperature followed by a clean water rinse. All surfaces must be dried prior to the application of coating. In cases where there is a large amount of contamination, a commercial blast is acceptable. Contact Heresite for coil remediation process.
- Thinning
Reduce VR-514 with S-275 solvent to 20–25 seconds on Zahn #2 Cup. This requires approximately 1 gallon of paint to 0.25 gallons of solvent. If using S-440, the reduction ratio is equivalent. The amount of thinner required is dependent upon temperature, ventilation, humidity, application type and desired film thickness.
- Application
Spray Application for Heat Transfer Equipment:
- Do not apply if temperature is less than 5°F above dew point, or if temperature is below 45°F
- Use standard production type spray equipment (conventional, HVLP, airless, etc.)
- Spray viscosity will be dependent on type of equipment being used. Reduce per thinning instructions
- Spray equipment: always flush spray equipment with solvent to clean prior to applying coating
- Air supply must be uncontaminated. Adjust air pressure to approximately 50 pounds at the gun and provide 15– 20 pounds at pressure pot. Adjust spray gun by first opening liquid valve and then adjust air valve to give approximately an 8"–12" fan, holding gun perpendicular to the surface at a distance of 12"
- Apply a mist bonding pass
- Allow to flash off for approximately a minute, but not long enough to allow film to completely dry
- Coils shall be coated on both sides of fins (outside and inside)
- Moving spray gun slowly — each coat consists of 3 spray passes: (1) straight into fins; (2) on 70-degree angle to right; (3) on 70-degree angle to left — on both sides of coil. These three spray passes are considered ONE coat — make sure to allow 15 minutes dry time between passes to avoid runs/sags
- VR-514 may be recoated with itself after 15–30 minutes of air dry
- Allow VR-514 to air dry for a minimum of 24 hours of before assembly
- Check dry by twisting thumb while applying pressure to paint, or check with fingernail. If the VR-514 appears to be soft, let dry further and recheck. The VR-514 is dry enough if you do not leave a thumbprint in the paint, or if the films feel hard/tough using your fingernail
- Temperature and humidity can dramatically impact dry times
- Check dry by twisting thumb while applying pressure to paint, or check with fingernail. If the VR-514 appears to be soft, let dry further and recheck. The VR-514 is dry enough if you do not leave a thumbprint in the paint, or if the films feel hard/tough using your fingernail
Application of VR-514 and UC-5500 Series:
- In the event that the VR-514 will be exposed to direct UV, a topcoat of UC-5500 series should be applied
- Apply approximately 1.5 mils of VR-514 2. After application of VR-514, allow the VR-514 to air dry for approximately 1 hour
- After 1 hour has elapsed, apply the UC-5500 series topcoat
- Part A and Part B are packaged in premeasured kits — with Part A being a short filled gallon allowing Part B to be added and mixed. The mixing ratio is 9 parts A to 1 part B. Mix Part A and Part B separately using an explosion-proof powder drill and blade type mixer. Add part B to Part A and thoroughly mix and blend using an explosion-proof power drill and blade type mixer. Mix only the amount that can be used within the estimated pot life. For optimum application, air and surface temperature should be from 10 to 32°C and at least 5°F above the dew point. Above 50°C, sagging may occur
- Spray application is preferred. Rolling or brushing is acceptable
- See UC-5500 series technical data sheet for additional information
- Allow the VR-514 with the UC-5500 series topcoat to air dry for at least 24–48 hours before assembly
VR-514 Dip Application:
- Do not apply if temperature is less than 5°F above dew point, or if temperature is below 45°F
- Consult Heresite for tank and pump recommendations
- Ensure as the part is prepared for dip, one will have a low point for drainage
- Immerse the cleaned part for 5 seconds in the reduced VR-514
- Upon removal of the part from the coating, apply light air pressure (approximately 15 psi) using an Air Knife or similar device to spread the air flow. Using the compressed air, remove excess coating. Minimal brushing should be required
- It may be deemed desirable to apply a final esthetic spray. This can be accomplished immediately after the final dip is accomplished and prior to final bake
- During dip application, the viscosity must be maintained and monitored. It is recommended that the viscosity be checked every hour to ensure compliance with the specification of 17–19 seconds Zahn #2. Additional solvent and coating can be added to adjust viscosity as needed
Spray Application For Higher Film Build:
- Do not apply if temperature is less than 5°F above dew point, or if temperature is below 45°F
- Use standard production type spray equipment (conventional, HVLP, airless, etc.)
- Spray viscosity will be dependent on type of equipment being used. Reduce per thinning instructions
- Spray equipment: always flush spray equipment with solvent to clean prior to applying coating
- Air supply must be uncontaminated. Adjust air pressure to approximately 50 pounds at the gun and provide 15– 20 pounds at pressure pot. Adjust spray gun by first opening liquid valve and then adjust air valve to give approximately an 8"–12" fan, holding gun perpendicular to the surface at a distance of 12"
- Apply a mist bonding pass
- Allow to flash off for approximately a minute, but not long enough to allow film to completely dry
- Apply a 3–4 crisscross multi-pass maintaining a wet appearing film
- Allow a minimum of 15 minutes of air dry
- Apply another coat of VR-514 following same steps as above
- Repeat steps 9 and 10 until the desired film build is achieved [typically two to three coats for 4.0 to 6.0 mils (102–152 microns)]
- VR-514 may be recoated with itself after 15–30 minutes of air dry. 14. Allow VR-514 to air dry for a minimum of 24 hours of before assembly or follow force cure schedule outlined in the Curing/Drying section
- Check dry by twisting thumb while applying pressure to paint, or check with fingernail. If the VR-514 appears to be soft, let dry further and recheck. The VR-514 is dry enough if you do not leave a thumbprint in the paint, or if the films feel hard/tough using your fingernail
- Temperature and humidity can dramatically impact dry times.
- Check dry by twisting thumb while applying pressure to paint, or check with fingernail. If the VR-514 appears to be soft, let dry further and recheck. The VR-514 is dry enough if you do not leave a thumbprint in the paint, or if the films feel hard/tough using your fingernail
- Curing/Drying
Air Dry: Coil should be dry to touch within 5 hours of final application — warmer temperatures will enhance dry, cooler temperatures will lengthen the dry time
Force Cure: A force cure at 180°F for 30 minutes is an option if an appropriate oven is available
Technical Details & Test Data
- Chemical Resistance
VR-514 is chemically resistant to a wide range of acids, solvents, and inorganic salts.
Packaging & Availability
- Packaging
VR-514 is available in one gallon, five gallon and 54 gallon drum quantities.
Storage & Handling
- Storage Conditions
Coating should not be stored longer than 2 years. Coating should be stored in a clean, dry environment at 50–75°F. Keep out of direct sunlight. Avoid excessive heat and keep from freezing.