Common Types of Industrial Coatings

Common Types of Industrial Coatings

Sep 01, 2020

There are many types of floor coatings, all with different physical and chemical composition. It includes corrosion resistance, UV resistance, hardness, and so forth. This is why most assets are finished with multiple coatings to make them better suited against these elements.

With that, it’s crucial to understand the common types of industrial coating systems and how they cooperate to form a formidable protective shield. This knowledge is also immensely beneficial to designers and owners who need to choose the best patterns and styles that best suit the application.

We will discuss four of the most common floor coatings with their advantages and applications.

Epoxies

Epoxy coatings comprise an epoxy base and a curing agent. You can achieve a broad scope of coating properties with epoxies by manipulating proportions for the above two components. For instance, polyamide epoxy coating has excellent moisture-resistant properties. Epoxy mastic coatings have a resourceful thickness, while phenolic epoxy coatings have excellent chemical resistance.

With this tremendous flexibility, epoxies are used as intermediate industrial floor coatings in Richmond with regard to the needs of the application.

Their downside is the deprived performance with exposure to sunlight.

Pros

  • Chemical resistant
  • Abrasion-resistant
  • Performs well when submerged
  • Enhances abrasion resistance by building film thickness
  • Easily mixed to provide a broad scope of costing properties

Cons

  • It chalks with exposure to sunlight

Polyurethanes

Mostly, polyurethane coatings are used as a top coat, in situations where durability and resistance to abrasion are vital considerations. They come in two types, the Aliphatic and Aromatic.

Aliphatic polyurethane is excellent in color retention, so they are better suited for exterior environments. Aromatic polyurethanes are best in submerged environments. They easily chalk with prolonged exposure to sunlight.

Polyurethanes are applied as topcoats above zinc-rich primer and epoxies on highway bridges. Other applications are on ship’s top sides, wastewater treatment plants, and also on dams.

Advantages

  • Abrasion Resistant
  • Excellent color retention
  • Aliphatic polyurethanes perform well under UV light
  • Aromatic is good when submerged.
  • They have low available VOCs

Disadvantages

  • Contains a harmful carcinogen – isocyanate
  • The application requires professional workers and the right protective gear
  • Costlier than epoxies

Polysiloxane Coating

This type of industrial coating is a relatively new introduction to the market, dating to as late as the 1990s. They have great resistance to abrasive elements and are also weather resistant. Polysiloxanes are highly durable and retain their original appearance for long periods, but lack the flexibility needed in many industrial environments.

Skilled experts usually combine the benefits of epoxies and polysiloxanes to form an epoxy-polysiloxane coating. This hybrid has many benefits, including top-notch abrasion resistance, weather and UV resistance, and resistance to chemical and corrosive effects.

Epoxy polysiloxanes hybrid may be higher priced compared to epoxies and polyurethane. They are far more durable, and can be applied faster, hence the long-term value in a wide range of applications.

Due to their performance and durability, the US Navy uses this hybrid to cut on the costs of their vessel’s lifecycles. Other industrial applications include marine structures, wastewater treatment facilities, storage tanks, and other places in need of a long poised industrial coating.

Advantages

  • Remarkable resistance to weather and abrasion
  • Allows for dual-coat application, i.e., zinc-primer and polysiloxane, instead of the popular three-coat thus minimizing on labor costs
  • Great color and gloss preservation
  • High performance on UV light
  • Higher maximum service temperature (-200 – 1400 degrees) compared to other systems

Disadvantages

  • Imperfect color matching may expose touchups
  • Higher material prices compared to epoxies
  • It’s a new product in the market, coming only in the 90s

Organic and Inorganic zinc-rich

This a generic coating system and also comes in two types. Organic – contains epoxy or polyurethane binders. Inorganic – contain silicate binders. Both of these are highly rich in zinc dust.

The purpose of the zinc is to provide galvanic protection, meaning at the point of corrosion, it’s the zinc that will corrode, saving the steel underneath—that zinc-rich coating corrosion offers a protective barrier between the steel and its surroundings.

The inorganic zinc-rich coating offers better galvanic security and abrasion resistance compared to the organic type. The prior, however, require more preparation procedures. Both of these, however, are excellent multi-coat system performers.

Industrial floor coatings in Richmond use zinc primers in a broad range of corrosive environments, including bridges, coal plants, and on surfaces of ships.

Advantages

  • Abrasive resistant
  • Highly protective to steel in multiple ways
  • High durability levels

Disadvantages

  • They have to be top-coated in most applications
  • Prior to application, you need an immaculate surface to apply inorganic zinc coatings
  • Both organic and inorganic coatings have minimal resistance to acids and alkali