Chemical resistance in coatings for liquid storage tanks

  • Resistance to a wide range of liquid materials which need to be transported as cargo and/or stored, including foodstuffs, petrochemicals and oils, and chemicals such as acids, bases and organic solvents/substances
  • Materials are usually held in tanks constructed of steel or concrete
  • The function of our coatings is to protect the tank construction material from corrosion or attack, but the coating must also ensure the cargo/tank contents is not changed or contaminated
  • Current state of the art coatings are mainly based on epoxy resin technology
  • There is no universal tank lining due to the wide range of materials which need to be contained
  • Cargo tanks in marine cargo vessels are often used to transport a variety of substances in sequence and there can be issues or challenges with specific sequences or combinations of cargoes 
  • Reduced absorption of substances into tank linings is often a desirable attribute
  • We need technologies which can provide a broader range of chemical resistance 
  • Some substances are particularly aggressive towards tank linings, like acids for example,  and maintaining performance lifetime is a challenge 
  • Longer performance lifetimes are needed to help reduce maintenance costs
  • Customers are asking for tank linings which provide resistance to “new” challenging cargoes and substances such as bio-fuels and hot crude oil.
     

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