Epoxy coatings and Unsaturated polyester resins hold the lion’s share of materials used in marine coatings today. Applied since the 1950s, today they are used during shipbuilding, maintenance and repairs on multiple parts of the ship such as underwater hulls, ballast tanks, cargo tanks or holds, decks, topsides and superstructures, etc. They offer excellent resistance against corrosion, provide a long-lasting overcoat and can be conveniently recoated. They are used as a primer, tie coat as well as topcoat (against fouling, for decorative purposes and in some cases against UV corrosion).
For any of the ship parts to be coated, the coating protocol would respect a number of strict standard procedures, including: cleaning the steel structure to be coated; curing the resin with a polyamine or polyamine hardener (to increase mechanical, chemical and heat resistance); applying the coating by spray or brushes; drying each coating layer before the next is applied.
CREST’s C’POL range of water resistant resins are medium reactivity, useful for the fabrication of a wide range of hand moulded FRP structures for Marine and Chemical Industry. Structures made with this range of resins possess excellent resistance to water and host of corrosive chemicals such as dilute acids and salt solutions.
It is an environment friendly resin and is specially designed to give much less monomer emission than the conventional isophthalic resin. The low emission feature makes it an ideal resin for use in fabrication of large structures viz. Boat Hulls, Super Structures, Storage tanks etc while providing supreme hydrolytic stability.