How to choose correct coating?

Different types of coating

The best corrosion resistant coating will protect against surface damage while standing the test of time. Corrosion resistant coatings need to prove strong against fatigue and environmental stressors. Demech chemical is committed to helping you find the best solution to fight against surface corrosion.

A variety of common environmental stressors cause corrosion:

  • •A humid environment
  • •Water on a metal’s surface
  • •Stress cracks & fatigued material
  • •Corrosive gases such as chlorine, hydrogen sulfides, ammonia and sulfur oxides
  • •Exposure to organic compounds such as dirt and bacteria
Chlorine can also be introduced by way of road salt (the chloride ion in salt, sodium chloride) and perspiration. Ammonia is found in fertilizers and in animal wastes. Hydrogen sulfides form in sewage and where organic matter decomposes. Sulfur oxides occur where sulfur-containing fuels are combusted: Diesel engines and coal-fired power plants, for example.

Luckily, there are protective coatings that will prevent the degradation of your metal surfaces.

These protective coatings range from low-tech methods to highly innovative solutions. You will have to choose the best corrosion resistant coating based on your budget, skill set, and technical needs.

Different types of coatings

  • 1.Epoxy coating
  • 2.Polyurethane coating
  • 3.Chemical resistant coating
  • 4.Ceramic Coating
  • 5.Glass flake coating

Why epoxy coating?

From protecting pipelines to sealing warehouse floors, an epoxy surface protects surfaces strengthens materials, and protects them from corrosion and decay, making epoxy one of the most widely used industrial finishes.

Why polyurethane coating?

A polyurethane coating is a polyurethane layer applied to the surface of a substrate for the purpose of protecting it. These helps to protect substrates from various types of defects such as corrosion, weathering, abrasion and other deteriorating processes. Polyurethane itself is a type of polymer that is connected to a chemical compound group known as carbamates. This polymer material is also thermosetting in nature; in other words, it burns rather than melts when heated. Another characteristic of polyurethane coatings is its customization. These can be formulated to be glossy, muted, opaque or transparent.

Why chemical resistant coating?

Chemical resistant coatings are essential to industrial equipment such as tanks, pumps, and valves that are exposed to environmental and industrial chemicals such as alkalis and acids. Chemical resistant paint is designed to protect against the harshest of chemicals. Without proper protective coatings, solvents, acids, alkalis, salts, and other substances can be absorbed by the substrate, causing deterioration and contamination.

Why ceramic coating?

Ceramic coatings on metal which can significantly improve the surface properties including anti-fouling, self-cleaning, corrosion resistance, wear resistance and bio-compatibility. These are great insulators, and they provide high levels of abrasion resistance for metals.

Why glass flake coating?

Glass flake coatings are glass flake reinforced system in which glass fillers are embedded in solvent free matrix in epoxy/polyester resin /vinyl ester. Vinyl ester glass flake linings provide exceptional long-term corrosion protection under severe FGD conditions of immersion, corrosive gases, chemicals, high temperatures & abrasion.

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