Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Type
- Zinc Flake Epoxy Primer
- Gloss
- Matte
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Features
With a platelet-like structure, the zinc flake provides a larger surface area the typical zinc dust allowing for more favorable performance characteristics:
- Over 4000 hours salt spray on steel
- Greater flexibility compared to conventional zinc dust
- Improved cohesion
- Smoother surface & improved overcoat properties
- No intermediate coat necessary
The full flake 2D contact between the zinc flakes gives a higher current density that improves the cathodic nature of the coating. Less zinc in the dry film results in a greater amount of resin, which protects the zinc particles from corrosive forces, thus reducing the problem at the source. As the zinc flakes overlap each other when they are laid down, this barrier is enhanced.
Applications & Uses
- Markets
- Application Method
- Quick Reference
- Mix Ratio - 4:1 (Resin to Catalyst)
- Catalyst - 80155C ZnKoat Catalyst
- Recommended Thickness - 100 - 150 microns
- Theoretical Coverage - 864 ft²/usg at 1.0 mil DFT
- Thinner / Clean-up - Q650 Universal Reducer
- Application Guide
- Surface - Steel, Galvanized, Aluminum
- Pot Life - 6 hours at 75°F
- Dry time - At 73°F, 50% relative humidity
- Cure times
- To Touch - 10 - 20 minutes
- Tack Free - Less than 1 hour
- To Recoat - 1 - 72 hours
- Hard - 24 hours
- Application Equipment
Conventional Air Spray Reduce with Q650 as required Air Assisted Airless Reduce with Q650 as required Airless Reduce with Q650 as required Electrostatic Spray Some adjustments for polarity may be necessary to maximum of 2 m.ohms Brush & Roll Use as described within specified pot life - Surface Preparation
All surfaces must be clean and free from dirt, oils, rust, flaking paint, and other contaminants. Ensure a sandblast quality of SSPC-SP6 (NACE 2) Commercial blast or for best results SPC-SP10 (NACE 2) Near White blast or better. Proper surface preparation will enhance the performance of the coating system.
Important - ZnKoat should be top-coated in the 72-hour window to ensure good inter-coat adhesion, or sanding will be necessary. Temperatures in excess of 80°F can shorten this time due to an accelerated cure response. Outside this limit the surface should be sanded and cleaned prior to top coating.
- Application Instructions
- Thinning - Thinning is not necessary, but may facilitate flow depending on application equipment, using up to 10% total by volume. Only use the specified thinners approved by the manufacturer. Be aware that additional reduction (solvent) will increase the VOC levels of the mixed coating. Always know VOC laws for coating applications in your area and follow regulated restrictions.
- Application - Mix thoroughly before use, A to B ratio is 4:1. Combine 1 gallon “A” ZnKoat Zinc Flake Primer with 1 quart “B” 80155C and mix well. Apply when surface and air temperature are between 35°F - 100°F. Ensure surface temperature is at least 5°F above the dewpoint.
- Drying Time - See application data for typical dry times. Low temperature, high humidity, poor ventilation and thick films will slow drying.
- Clean Up - Flush mixed material from pot and lines immediately after use. Clean up paint tools or spills immediately with recommended thinner, carefully observing cautions on paint and thinner labels. Dried paint may be removed by scraping.
Properties
- Typical Properties
- Performance Properties
| Value | Units | Test Method / Conditions | |
| VOC (Mixed) | 420.0 | g/L | — |
| Zinc Content (Mixed, Dry Film) | 45.0 | % | — |
| Weight Solids (Mixed) | 69 - 73 | % | — |
| Volume Solids(Mixed) | 51 - 55 | % | — |
| Viscosity (Mixed) | 86.0 | KU | — |
| Flash Point | 73.0 | °F | — |
| Value | Units | Test Method / Conditions | |
| Corrosion Resistance (Salt Spray, SSPC SP10, 4 - 6mils DFT) | min. 4000 | h | — |
Technical Details & Test Data
- General Purpose System Specifications
- Sandblast - SSPC-SP6 (NACE 3) Commercial Blast or SSPC-SP5 (NACE 1) Near-white Blast
- Prime - 155ZK ZnKoat Epoxy Primer 4.0 - 6.0 mils DFT
- Topcoat - 5xxNX - Color NexShield HS Urethane Topcoat 2.0 - 3.0 mils DFT
- Clear Coat (optional) - 500NX - Clear NexShield HS Urethane Topcoat 1.0 - 2.0 mils DFT
- Total System - 7.0 - 11.0 mils DFT
- Thinner - Q650 Universal Reducer
Safety & Health
- Safety
For industrial use only by professional applicators. Always wear appropriate safety equipment and observe proper handling techniques.
Storage & Handling
- Shelf Life
- 1 Year From Shipment
- Storage
Store in cool, dry, and secure location.