Q1: What is the primary role of a curing agent in coatings or adhesives?
A: It initiates and controls chemical cross-linking of resins (e.g., epoxy, polyurethane), transforming them from liquid to solid states. This process enhances hardness, thermal stability, chemical resistance, and mechanical strength of the final product.

Q2: How is the curing agent dosage determined for different applications?
A: Dosage depends on resin type, desired curing speed, ambient conditions, and target properties. Strict adherence to the manufacturer’s mixing ratio is critical—too little agent may cause incomplete curing; too much can lead to brittleness or reduced flexibility. Always conduct small-scale tests first.

Q3: What safety and handling precautions are required?
A: Curing agents are often reactive chemicals. Use in well-ventilated areas with appropriate PPE (gloves, goggles). Avoid skin contact and inhalation. Store in a cool, dry place away from moisture and direct sunlight, and never mix with incompatible materials unless specified. Follow local regulations for disposal.