FRP stands for Fiberglass Reinforced Plastic. Which category does FRP belong to?

• A. Elastomer
• B. Acrylic
• C. Thermoplastic
• D. Thermoset

Answer: (D)

FRP is a composite where fiberglass reinforcement is embedded in a plastic resin, and the resin type determines whether the material is thermoset or thermoplastic. In most FRP applications, the resin (like epoxy or polyester) cures to form a cross-linked network that cannot be melted again, which is the hallmark of a thermoset. This gives FRP its high rigidity, heat resistance, and dimensional stability. Elastomer would be too flexible, acrylic refers to a specific plastic family, and thermoplastic would imply the material could be remelted and reformed, which isn’t how FRP is typically processed or used.