Knowde Enhanced TDS
Identification & Functionality
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Product Highlights
When used in combination with NORSODYNE™ H 81269 TF, FIREBLOCK™ , meets the following:
- UL 94-2006 Plastics Flammability Standard, HB classification
- Docket 90A requirements for transportation applications, including ASTM E162-09 Surface Flammability, and ASTM E662-08 Smoke Generation
- ASTM E84-09 Class 1 for Building/Architecture/Construction
No fillers or additives required to achieve flame-retardant or smoke properties FIREBLOCK™ 2330PAWK745 provides the following features and benefits:
- Meets the EPA National Emission Standards for Hazardous Air Pollutants (NESHAP) for Boat Manufacturing and Reinforced Plastic Composites Production
- Meets SCAQMD 1162 requirements
- Compliant with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2008 (RoHS Regulations)
- For interior use, non-water immersion applications
- Available in white and light pastel colors only
- Unpromoted and requires the addition of a promoter for proper cure
Applications & Uses
- Applications
- Recommended Applications
FIREBLOCK™ 2330PAWK745 must be mixed prior to use. Ingredients in the FIREBLOCK™ 2330PAWK745 will settle during storage. Failure to thoroughly reincorporate these ingredients will compromise the flame-retardant properties of the end product. Use mixing equipment with sufficient horsepower (relative to container size) to achieve thorough circulation from top to bottom and out to the sides of the container. The agitator must be properly sized for the container and must allow for uniform mixing regardless of the liquid level in the container. Scrape the bottom of the container to ensure that all ingredients are being pulled into the mix. After settled materials have been reincorporated, mixing once a day for 10 minutes is typically sufficient.
Air bubbling should not be used for mixing. It is not effective and only serves as a potential source of water or oil contamination. Do not overmix FIREBLOCK™ 2330PAWK745. Overmixing can break down the resin viscosity increasing the tendency to sag. FIREBLOCK™ 2330PAWK745 is un-promoted. Promoter must be added for the product to cure properly Once the promoter has been added, the mix should be used within the same day. After 24 hours, the mix may have extended gel times and may not cure correctly. This could compromise the flame-retardant properties. The cure rate of polyester resins depends on a number of factors including the product’s age, temperature, catalyst type, catalyst level and ambient humidity. For these reasons, we recommend that customers check the cure rate in their plant.All data referencing gel or cure refers specifically to Arkema Luperox® DDM-9 catalyst. United Initiators Norox® MEKP-9 and Norox® MEKP-9H, Akzo Nobel CADOX L-50a and CADOX D-50 are expected to yield similar performance. Arkema Luperox® DHD-9, United Initiators Norox® MEKP-925 and Norox® MEKP-925H, and Pergan HP-90 may yield slightly shorter gel and cure times. To adjust for varying conditions the catalyst level can be varied.
The catalyst level should not exceed 2.4% or fall below 0.9% for proper cure. A catalyst level of 1.8% at 77°F is considered ideal.This product should not be used when temperature conditions are below 60°F, as curing may be adversely affected.
FIREBLOCK™ 2330PAWK745 is formulated for spray application. Brushing or rolling is not recommended. To maximize the performance of this coating, the spray equipment must be well maintained and regularly calibrated. Application procedure recommendations should be followed carefully. Poorly maintained equipment or poor application will quickly negate the beneficial properties of this gel coat. Refer to Polynt’s Composites Applications Guide (Cookbook) for equipment and application recommendations.
Polynt Composites does not recommend fluid lines longer than 50 feet, or pumps smaller than 20:1 ratio. Polynt Composites recommends a gel coat delivery rate of no more than 2.5 pounds per minute with conventional air atomized equipment, and no more than 4 pounds per minute with airless equipment. To avoid tip plugging Polynt Composites recommends using 0.026 spray tips or larger.
For optimum results, uniform catalyst mix must be achieved. Even with the equipment properly calibrated, potential problems can occur due to poorly atomized catalyst, surging problems (FIREBLOCK™ 2330PAWK745 or catalyst), poor tip alignment (catalyst to FIREBLOCK™ 2330PAWK745 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. Inquire about and adhere to all equipment manufacturers’ recommendations.
When establishing the fan pattern for the spray equipment, use the lowest pump pressure needed to achieve a good fan pattern (no fingers or tails, uniform particle size of about 1/16²). Use of higher pressures can lead to a porosity or excessive overspray. Overspray can result in a leathery or chicken skin texture if it falls on the part surface. To minimize overspray that falls onto the mold, plan the spray pattern so that the beginning is closest to the vapor/air exhaust and progresses to the opposite mold end. The spray pattern should also allow for a wet line to be maintained.
A spray distance of 18 to 36 inches is recommended. Closer spray distances can result in blowing of the film or air entrapment. Spraying at distances greater than 4 feet will increase orange peel and porosity. For deep channels, recessed, and hard-to-spray areas, an extension nozzle is highly recommended.
For best overall end performance properties, a wet film thickness of 16 to 20 mils is recommended. The film should be applied in multiple passes with each pass having a thickness of 6 mils. More rapid film build could result in some sag and porosity. Films less than 12 mils may not cure properly, may be hard to patch, have more print-through, and be more susceptible to water blisters. Films above 24 mils may prerelease, trap porosity, crack and are more subject to weathering discoloration.
To avoid pre-release Polynt Composites recommends that manufacturers use paste-wax mold release and apply the backup laminate as soon as possible after the FIREBLOCK™ 2330PAWK745 becomes tack-free
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Flash Point (77°F, 25°C) | 88 | °F | — |
| Weight per Gallon (77°F, 25°C) | 12 | — | — |
| Viscosity (77°F, 25°C) | 13000 | cps | — |
| Thixotropic Index (77°F, 25°C) | 7 | — | — |
| Gel Time (77°F, 25°C) | 12 | minutes | — |
| Sag Resistance (77°F, 25°C) | Good at 30 mils | — | — |
| Hide (77°F, 25°C) | Typically complete at 28 mils | — | — |
| Tack Free/Dull Gloss Time (77°F, 25°C) | 60-90 | minutes | — |
Storage & Handling
- Handling and Storage
FIREBLOCK™ 2330PAWK745 has a shelf life of 120 days from the date of manufacture when stored at 73°F or below in a closed, factory-sealed, opaque container, and out of direct sunlight. The shelf life will be cut in half for every 20°F over 73°F.