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:
- Salt Solutions
- Chemical Stability
- Low Moisture Absorption
- Corrosion Resistant
- Fatigue Strength
- Flexural Strength
- 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.