Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Product Highlights
- Less osmotic (water) blistering
- Final pigmented material will provide a visual aid to see air bubbles during lamination
- Improved cosmetics due to reduced fiber print-through and distortion
Applications & Uses
- Markets
- Applications
- Recommended Applications
957XK100 appears to be very thick in the container. It is important to mix the material (before each use) to break down this high viscosity. Do not over-mix. Over-mixing can break down barrier coat viscosity, increasing its tendency to sag and cause styrene loss which could cause porosity tendency. Material should be mixed no more than 10 minutes per day on an as neededbasis. Meaning: 1) If settling occurs, 2) If viscosity builds up and material becomes hard to pump. The barrier coat should be mixing to the sides of the container with the least amount of turbulence possible. Air bubbling should not be used for mixing. It is not effective and only serves as a potential for water or oil contamination. Preferred method of application is spray, either conventional or air atomized, air assistance 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. Do not spray less than 16 mils wet (Thinner layer will not cure properly and can actually cause worse blisters than if there was no barrier coat at all). As with conventional gel coat, spray approximately 6 mils per pass, up to the desired thickness. For optimum results, uniform catalyst mix must be achieved. Even with the equipment properly calibrated, potential problems can occur due to poor catalyst atomization, surging problems, poor tip alignment (catalyst to gel coat mix), contamination and poor application procedures which will quickly negate all benefits of calibration. The equipment (and application procedures) must be monitored on a routine basis to ensure proper application and cure of the gel coat. Ask about and adhere to all equipment manufacturers’ recommendations.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Flash Point | 31 | °C | — |
| Viscosity at 25°C (Brookfield RVF, spindle No.4 at 4rpm) | 10,000 - 15,000 | cps | — |
| Thixotropic Index at 25°C (Brookfield RVF, spindle No.4, Speeds 2 and 20 rpm) | 5.0 - 6.5 | — | — |
| Volatile Organic CompoundReactivity at 25°C, using 1.8% of MEKP-925 | 38 - 42 | % | — |
| Gel Time | 10 - 15 | minutes | — |
| Lay-up Time | 30 - 90 | minutes | — |
Technical Details & Test Data
- Cure
It is recommended to recheck the gel time in the customer plant because age, temperature, humidity and catalyst will produce varied gel times.
Storage & Handling
- Handling and Storage
Uncatalyzed, this product has a usage life of 60 days from the date of manufacture when stored at 23°C or below in a closed, factory-sealed, opaque container, and out of direct sunlight. This usage life is cut in half for every 10°C over 23°C. Totes of product have even shorter usage life (66% of the usage life mentioned above for drums).