Knowde Enhanced TDS
Identification & Functionality
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Product Highlights
- Black color that provides a visual aid to see air bubbles during lamination
- White available for use behind low-hide colors
- Less osmotic(water) blistering
- Improved cosmetics due to reduced fiber print-through & distortion
- Reduced back side tack
Applications & Uses
- Markets
- Applications
- Recommended Applications
At rest, vinylester barrier coats 57V appear to be very thick in the container. It is important to mix the material (before each use) to break down this high viscosity. It is recommended that the temperature of the material be at least 75°F. In-line fluid heaters (be sure all safety rules are applied) can be used to raise the temperature of the material to room temperature. In addition, a larger angle tip is recommended to compensate for a small fan; use a .021 inch orifice with a 60° fan. The fluid hose should be at least ½ inch in diameter, but a four-foot length of 3/8 inch whip can be used at the gun. Peferred method of application is spray, either conventional or air atomized, air-assisted airless, or airless. Recommended delivery rate is no more than 2.5 pounds per minute with air atomized equipment and no more than 3 pounds per minute with airless equipment. Brushing or rolling is not recommended. Spray 20 to 24 mils wet, behind a cured cosmetic gel coat.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Viscosity Brookfield RVF #4 Spindle at 4 rpm at 25°C (77°F) | 12000-15000 | cps | — |
| Thixotropic Index at 25°C (77°F) | 4 - 6 | — | — |
| Gel Time l at1.8% MEKP NOROX 925H at 25°C (77°F) | 15 -20 | minutes | — |
| Lay-up Time at 25°C (77°F) | 60 | minutes | — |
| Sag résistance at 25°C (77°F) | 24 | mils wet | — |
| Color match at 25°C (77°F) | black, grey, white | — | — |
Technical Details & Test Data
- Cure
It is recommended that gel time be checked in the customer's plant because age, temperature, humidity and catalyst will produce varied gel times. All data referencing gel or cure refers specifically to NOROX MEKP925-H catalyst.
Catalyst level should not exceed 2.5% or fall below 1.2% for proper cure. The recommended catalyst range for proper cure is 1.2% to 2.5%, with 1.8% at 77°F being ideal. Normally, the gel coat film is ready to lay up within 60 minutes. This time element is dependent on material temperature, room temperature, humidity, air movement, and catalyst concentration. This product should not be used when temperature conditions are below 65°F, as cure may be adversely affected.
Packaging & Availability
- Packaging Type
- Product Availability
Standard shipments are made in open-head 20 or 204 liters steel drums. Closed head drums are available on request.
Storage & Handling
- Handling and Storage
Uncatalyzed, this product has a usage life of 45 days from date of shipment from Polynt Composites when stored at 73°F or below, in a closed, factory-sealed, opaque container, and out of direct sunlight.