Which primer is designed to etch the surface to promote adhesion?

Prepare for the SkillsUSA Automotive Refinishing Technology Test. Study with our diverse question formats including multiple choice, explanations, and expert tips. Ace your exam and advance your skills!

Multiple Choice

Which primer is designed to etch the surface to promote adhesion?

Etching the surface to promote adhesion is done by primers that chemically bite into the metal to create a micro-rough profile for a stronger bond. A self-etching primer contains acidic components that slightly etch the surface, helping subsequent coats grip better, especially on bare metal or oxidized surfaces. Epoxy primer mainly provides corrosion resistance and strong adhesion but does not rely on etching. High-build primer’s job is mainly filling and leveling, not roughening the surface. Zinc-chromate primer focuses on corrosion inhibition rather than surface etching. So the self-etching primer is the one designed to etch the surface to promote adhesion.

Etching the surface to promote adhesion is done by primers that chemically bite into the metal to create a micro-rough profile for a stronger bond. A self-etching primer contains acidic components that slightly etch the surface, helping subsequent coats grip better, especially on bare metal or oxidized surfaces. Epoxy primer mainly provides corrosion resistance and strong adhesion but does not rely on etching. High-build primer’s job is mainly filling and leveling, not roughening the surface. Zinc-chromate primer focuses on corrosion inhibition rather than surface etching. So the self-etching primer is the one designed to etch the surface to promote adhesion.

More practice questions