Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Applications & Uses
- Applications
- Application Area
- Application Method
- Intended Uses
- Coastal and marine exposures
- Refineries
- Water treatment plants
- Chemical plants
- Pulp and paper facilities
- General heavy maintenance
- Touch up and repair of inorganic zinc coatings and galvanized metal
- Limitations
Not recommended for immersion in acids or alkalis, continuous immersion in fresh or salt water untopcoated or immersion in solvents. Must be topcoated for atmospheric service other than pH range of 6.5 - 8.0.
- Top coats
- Catalyzed epoxies
- Coal tar epoxy
- Vinyls
- Phenolics
- Acrylics
- Chlorinated rubbers
- Urethanes
- Application Instructions
Surface Preparation:
- New Steel: Surface must be dry and free of contamination. Remove all weld spatter and grind all rough welds and sharp edges to smooth contour. For severe exposure (immersion, chemical, etc) near-white blast clean per SSPC SP 10-63T. For other exposures blast clean per SSPC SP 6-63 to a maximum profile of 1.5 mils.
- Previously Painted Surfaces: Must be free of oil, grease, or other contamination. Best results, spot blast exposed areas to be printed. Power tool brushings may be used for minor touch up.
Spraying:
- Surface shall be dry, 5° F above dew point with air temperatures greater than 50° F. Must be free of rust bloom. For air atomized spray, reduce 10-20% with 100 flash Aromatic Solvent, or Xylol for improved atomization. Fluid tips of .070" and air caps delivering 9-10 CFM at 30# PSI are acceptable. A 3/8" to 1/2" material hose is recommended.
- For airless spray, use .023-.029 tips with 900-1800# fluid pressure. Material should be kept under constant slow speed agitation during use. Double lap all welds, seams, corners and edges to insure proper film thickness. Make even, parallel passes with 50% overlap to provide uniformity.
Properties
- Typical Properties
- Specifications
| Value | Units | Test Method / Conditions | |
| Coverage (1 mils, dry, 90% Recovery) | 752.0 | ft/gallon | - |
| Dry Film Thickness | 2 - 3 | mils | - |
| Zinc Content (as Metal in Dry Film) | 91.0 | % | - |
| Dry (To Handle, 70°F) | 30 - 40 | mins | - |
| Dry (To Topcoat, 70°F) | 2 - 3 | h | - |
| Temperature Tolerance (Continuos) | 250.0 | °F | - |
| Temperature Tolerance (Intermittent) | 450.0 | °F | - |
| Adhesion (No Tape Off) | 5B | - | ASTM-3359 |
| Impact | Pass 20 | in/lbs | Reverse |
| Bend Test (1/4 in. Mandrel) | Pass | - | ASTM D-522 |
| Elongation | 15.8 | % | - |
| Weldable | Yes | - | - |
| Salt Fog (1000 Hours) | Pass | - | ASTM B117 |
| Humidity (500 Hours) | Pass | - | ASTM D2247 |
| Value | Units | Test Method / Conditions | |
| Weight | 22 - 26 | per gallon | - |
| Solids (by Weight) | 83 - 87 | - | - |
| Solids (by Volume) | 50 - 52 | - | - |
| VOC | 3.4 - 3.5 | - | - |
| Flash Point (TCC) | max. 80 | °F | - |
| Non - Sag (Wet) | min. 16 | mils | - |
Regulatory & Compliance
- Compliance
- DOD-P-21035 Zinc Rich Galvanize Repair
- MIL-P-26915 Type I Class A Zinc Rich Primer
- MIL-P-46105 Weld Through Zinc Rich Primer
- MIL-P-21035-A - High Zinc Dust Content, Galvanized Repair
Safety & Health
- Safety and Handling
Proper precautions should be taken to assure operator protection, including explosion-proof electrical fixtures when applied indoors.
Storage & Handling
- Shelf Life
- 1 Year