What is a hardener or activator?

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Prepare for the Carver NOCTI Collision Repair and Refinishing Technology Exam. Study with a variety of tools including flashcards and multiple-choice questions. Each question is designed with hints and explanations to help you succeed. Get ready for your test today!

Multiple Choice

What is a hardener or activator?

Explanation:
A hardener or activator is the reactive chemical mixed with the paint’s resin to start and drive the curing process. In two‑part automotive coatings, the resin and the hardener react together to form a crosslinked, durable film. This reaction gives the coating its hardness, chemical resistance, and adhesion. The hardener is not used to thin the paint, clean tools, or add color; those roles belong to a reducer/solvent, a cleaning solvent, and a pigment, respectively.

A hardener or activator is the reactive chemical mixed with the paint’s resin to start and drive the curing process. In two‑part automotive coatings, the resin and the hardener react together to form a crosslinked, durable film. This reaction gives the coating its hardness, chemical resistance, and adhesion. The hardener is not used to thin the paint, clean tools, or add color; those roles belong to a reducer/solvent, a cleaning solvent, and a pigment, respectively.

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