Types of Primers – Features, Uses, Advantages & Disadvantages
Types of Primers – Features, Uses, Advantages & Disadvantages Primer is the first coating applied on a surface to improve adhesion , durability , and corrosion resistance of the top coat. General Coating System (Sketch) ─────────────── Top Coat / Paint ─────────────── Primer ─────────────── Substrate (Metal / Wood / Concrete) 👉 Primer acts as a bonding layer between surface and paint. Types of Primers – Features, Uses, Advantages & Disadvantages 1. Epoxy Primer Features: Two-component, strong chemical bonding Uses: Steel structures, marine, industrial coatings Advantages: ✔ Excellent adhesion ✔ Long life ✔ High corrosion resistance Disadvantages: ✖ Expensive ✖ Mixing required 2. Zinc-Rich Primer Features: High zinc content Uses: Bridges, pipelines, offshore steel Advantages: ✔ Cathodic protection ✔ Very long-lasting Dis...