Product Name:Flame RetardantGelcoat HS - LFI7035S
1. Brief Introduction:HS-LFI7035S Gelcoat is a high-performance intumescent flame retardant gel coat. Its base resin is Isophthalic-adipic acid unsaturated polyester resin, making it highly effective.
This pre-promoted gel coat is perfectly suited for the spray process and is ideal for the surface of FRP products requiring advanced flame retardant properties.
.It is widely used in
rail transit, wind turbine nacelle covers, ship accessories, and various other fields demanding stringent flame retardant standards.
2. Features: · Excellent construction performance;
· Superior flame retardant performance (high oxygen index, low smoke density);
· Compliant with fire protection standards UIC564-2 Class B;
· Outstanding water and weather resistance.
3. Gelcoat Properties:
Gel time test: Curing agent M-50 (AKZO) 2%.
4 . Application Notes :1). Gently mix the gel coat in the bucket before use. Avoid high shear rates and air entrapment during mixing.
2). The ideal application temperature is between 18-25°C with humidity under 80%. Ensure the mold is polished and clean before application.
3). Prepare the mold surface to be dry, clean, and free of oil.
4). Fully wax the mold’s surface (avoid silicone-containing release wax). Allow water-soluble release wax to dry completely before spraying the gel coat.
5). Use MEKP as the curing agent, typically in dosages of 1-3%.
6). Maintain the total gel coat film thickness between 600 and 1000μm. Do not exceed 0.2mm per spray layer. Wait 2-3 minutes after solvent evaporation before adding additional layers to reach desired thickness.
7). Verify the gel coat's curing degree before starting lamination layers. Press your finger on the gel coat film for 30 seconds. If no residue remains on your finger but the gel coat is still sticky, proceed with lamination layers.
5. Operation procedure:
Note: Spray with a paint spray can, maintaining air source pressure at 20psi, and ensuring an air flow of at least 0.6 cubic meters per minute.
1). Prepare for spraying according to the application guide’s requirements.
2). Apply a thin layer of easy polishing primer (no thicker than 0.2mm) on the original mold surface using multiple thin passes. Wait for it to dissolve, then after 2 minutes of evaporation, spray the next layer to the desired thickness. The primer will dry within 1 hour, allowing you to begin sanding.
3). Conduct dry sanding with 220-320 mesh sandpaper, followed by sanding with 600-1200 mesh water sandpaper, and then polish.
6. Storage:
1) For optimal longevity and performance, ensure the product is stored away from heat sources such as direct sunlight or steam pipes. Always keep in a dry environment at temperatures below 25ºC.
2) Maintain a tight seal to prevent moisture absorption and monomer evaporation. Extended storage outside these recommended conditions can adversely affect the liquid resin's properties, including viscosity and gel time.
3) Transportation must comply with the State Council's 'Chemistry Dangerous Articles Safety Management Regulations.' As it contains styrene monomer, it is classified as hazardous and highly flammable.
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