Q: What is the flame retardant grade of this product?
A: Combustion grade B1 per GB8624.
Q: Is it a pre-accelerated product?
A: This mold tooling gelcoat is pre-accelerated. Only curing agent M50 needs to be added for customer use.
Q: What is mold tooling gelcoat used for?
A: This gelcoat is specially formulated to create durable FRP mold surfaces. It delivers good surface finish, high hardness and resistance to minor abrasion. It works well for composite molds used in boat, tank and custom composite part manufacturing.
Q: What surface preparation is needed before applying mold tooling gelcoat?
A: The substrate must be clean, dry and free of grease and dust. Smooth and seal the master pattern properly. Avoid loose particles. Apply gelcoat within the recommended time window to get consistent adhesion and prevent pinholes on the mold surface.
Q: What is the typical thickness range for mold tooling gelcoat application?
A: The suggested wet film thickness is between 0.4mm to 0.8mm for one coat. Too thin layers may cause insufficient coverage while overly thick coats can lead to sagging, cracking or internal curing issues during the mold production process.
Q: Can mold tooling gelcoat resist common release agents and styrene exposure?
A: Yes, our mold tooling gelcoat features good chemical resistance against standard release agents and styrene. It reduces surface degradation during repeated laminate layups, helping the mold maintain smooth appearance over multiple production cycles.
Q: What curing conditions are required for mold tooling gelcoat?
A: Apply it at temperature above 18°C with proper catalyst ratio. Low temperature slows down curing. Allow full cure before backing with structural FRP layers. Keep good ventilation to minimize volatile emission during the whole curing stage.
Q: How long can the finished mold made with this gelcoat last in production?
A: Service life depends on operating conditions and maintenance. Properly cured molds with our gelcoat can support many composite pulling cycles. Regular cleaning and correct release agent use will further extend the usable life of your FRP mold.
