Product Name:Flame RetardantGelcoat HS - LFI7035S
1. Brief Introduction:HS-LFI7035S Gelcoat stands as an intumescent flame retardant gel coat. Crafted with Isophthalic-adipic acid unsaturated polyester resin, it offers remarkable protection.
This pre-promoted gel coat is optimized for spray applications, ensuring a seamless surface for FRP products that demand flame resistance.
.It is ideally suited for
rail transit systems, wind turbine nacelle covers, ship accessories, and other applications where flame retardance is critical.
2. Features: · Good construction performance;
· Exceptional flame retardant properties (high oxygen index, low smoke density);
· Complies with fire protection standard UIC564-2 Class B;
· Superior water and weather resistance.
3. Gelcoat Properties:
Gel time test: Using Curing agent M-50 (AKZO) at 2% concentration.
4 . Application Notes :1). Gently mix the gelcoat in the bucket before use. Avoid high shear rates and air entrapment during mixing.
2). Optimal application temperature ranges between 18-25°C with humidity levels below 80%. Ensure that the mold is polished and clean before application.
3). Prepare the mold surface to be dry, clean, and oil-free.
4). Fully wax the mold surface (avoid silicone-containing release wax). Allow water-soluble release wax to dry before spraying the gelcoat.
5). Use MEKP as the curing agent for the gelcoat (recommended dosage: 1-3%).
6). Apply the gelcoat film to a total thickness between 600 and 1000μm. Each spray layer should not exceed 0.2mm. Allow 2-3 minutes for solvent evaporation before applying additional layers to reach the required thickness.
7). Check the cure degree of the gelcoat before starting lamination layers. Press your finger on the gelcoat film for 30 seconds. Proceed with lamination if you see no residue on your finger but the gelcoat remains sticky.
5. Operation Procedure:
Note: Use a paint spray can with an air source pressure maintained at 20psi and an air flow of at least 0.6 cubic meters per minute.
1). Follow the application guide to prepare for spraying.
2). Apply a thin, easy-to-polish primer layer (max thickness 0.2mm) to the mold's surface using multiple passes. Allow each layer to dissolve and dry for 2 minutes before the next application. The primer dries within 1 hour, after which you can begin sanding.
3). Dry sand with 220-320 mesh sandpaper, followed by wet sanding with 600-1200 mesh sandpaper. Then proceed to polish.
6. Storage:
1) Ensure the product is shielded from heat sources, including direct sunlight and steam pipes. Store it in a dry environment with temperatures maintained below 25ºC to preserve its high-quality standards.
2) Always keep the container sealed to ward off moisture absorption and prevent monomer evaporation. Extended storage under improper conditions can adversely affect the resin's critical properties, such as viscosity and gel time.
3) Transportation must comply with the State Council's 'Chemistry Dangerous Articles Safety Management Regulations.' Due to its styrene monomer content, it is classified as a hazardous and highly flammable material.
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