Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Medium chemical and heat resistances
- Resilient
Applications & Uses
- Markets
- Applications
- Application Method
- Recommended Applications
- Sanitary, marine, etc…
- Application Method
Do not over-mix gel coats. Over-mixing breaks down gel coat viscosity, increasing tendencies to sag, and cause styrene loss, which could contribute to porosity. Gel coats should be mixed once a day for 10 minutes. The gel coat should be mixed to the sides and bottom of 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.
Do not add any material, other than the amount of recommended methyl ethyl ketone peroxide, to this product without the advice of a representative of CCP Composites Korea.
Even with the equipment properly calibrated, potential problems can occur due to poorly atomized catalyst, poor tip alignment, contaminations and poor application procedures, which will quickly negate all benefits of calibration. Consequently, 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 manufacturer recommendations
Avoid over-spray settling on mold surfaces by beginning spray pattern closest to the vapor/air exhaust and progressing to the opposite mold end. Maintain recommended spray distances from the mold surface. Closer spray distances or larger tips may be required in hot weather to avoid dry spray buildup. For best overall performance properties, a wet film thickness of 18±2 mils is recommended as ideal. Films less than 12 mils may not cure properly, may be hard to patch, have more printthrough, and are more susceptible to water blisters. Films above 24 mils may pre-release, trap porosity, or generate cracks, and are more subject to weathering discoloration. If water blisters are of great concern (boat hulls), 20 to 24 mils would perform better than a thinner film, but resistance to sag, porosity and cracking could suffer. If weathering (yellowing from sunlight, decks) is of great concern, then thinner films (12 to 16 mils) would perform better, but patch ability, and resistance to printthrough and blistering could suffer.
- Processing Method
- Airless or air atomized spray gun equipments
- Gel coat delivery rate less than 2.5 pounds/minute with conventional air atomized equipments and less than 4 pounds/minutes with airless equipments.
Properties
- Color
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Gel Time | 12 - 15 | minutes | — |
| Reactivity at 25°C | 1.8 | % | MEKP-925P |
| Hide | Completed at 300 microns | — | — |
| Viscosity at 25°C (Brookfield RVF, spindle No.4 at 4 rpm) | 120 - 160 | poises | — |
| Thix index at 25°C (Brookfield RVF, Spindle No.4 at 2 and 20 rpm) | 6.0 - 7.0 | — | — |
Technical Details & Test Data
- Cure
It is recommended to recheck the gel time in the customer's plant because age, temperature, humidity and catalyst will produce varied gel times.
Storage & Handling
- Handling and Storage
Uncatalyzed, this gel coat has a usage life of 120 days from date of manufacture when stored at 23°C or below in a closed, factory-sealed, opaque container, and out of direct sunlight. The usage life is cut in half for every 15°C over 23°C. Totes of product can have even shorter usage life (66% of the drum shelf life mentioned above).