What is Epoxy Coating? | What are the Benefits?

Industrial Epoxy Coating

Epoxy Coating, is also known as Polyepoxies that are created through polymerisation. Epoxy coating is a chemical substance consisting of two distinct chemicals that is an Epoxy resin and hardener also commonly known as catalyst (Curing Agent) and are supplied as a two-pack, single pack, solvent-free and solvent-borne.

Most durable with mechanical and chemical strength and hence can be used for a variety of purposes from strong adhesives to durable paint for metals and floor coating.

Adequate surface preparation is highly recommended for good adhesion and long-lasting layers of protection.

Adequate dry film thickness is essential to obtain the satisfactory performance of Epoxy coating.

When these two chemicals are mixed together they undergo a chemical reaction that creates hard cured thermoset (Non-Reversible) coating.

Epoxy Resins are a Class of Polymer Chemicals

Epoxy coatings are the most versatile thermosetting polymeric product. Thermoset means once the coating has cured it cannot be reversed (Non-Reversible)

Common Epoxy Coatings:

  • Polyamide Epoxies
  • Phenolic Epoxies
  • Fusion Bonded Epoxies
  • Novolac Epoxies

Epoxy Coatings Provide Optimum Protection Against:

  • Grease/Oils
  • Salt Solutions
  • Chemical Stability
  • Low Moisture Absorption
  • Corrosion Resistant
  • Fatigue Strength
  • Flexural Strength
  • Turbulence
  • Extreme Temperatures

Epoxy Coating – Disadvantages:

Epoxies provide good exterior durability but are prone to chalking such as powdery form when exposed to sunlight for a longer period.

Longer curing time and slippery when wet.

They contain chemicals that may be hazardous to human health.

Epoxy Primer and Its Benefits:

Sealer: Epoxy Coating

  • Produces good finish on applied topcoat
  • Epoxy primer is waterproof
  • Protects metal from corrosion
  • Acts as a good bonding agent
  • Has excellent adhesion properties

Primer: Epoxy Coating

  • Seals up pores on the metal
  • Prevents corrosion
  • Provides key to subsequent coats.


Before selecting different types of industrial coatings several factors needs to be taken into consideration mainly the environmental harsh conditions, durability, price and application process.


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