The classification of marine coatings Ⅱ
3. Fresh water tank paint
Cement coating is the traditional means of protection for fresh water tanks in shipbuilding. The use of cement coating has almost no impact on water quality, but the cement coating has the shortcomings of lacunose and easy cracking. And its protection for steel plate rust is unsatisfactory. Modern fresh water cabin coatings generally used pure epoxy coatings, there are two types of high solid content and solvent-free epoxy coatings.
4. Anti-fouling paint
At present, the anti-fouling coatings used on ships are using cuprous oxide as anti-fouling agent, which can be divided into two types: long-acting anti-fouling coatings and self-polishing anti-fouling coatings. As for the former, the ships must launch as soon as possible after the completion of construction, otherwise cracking while the latter does not have these restrictions. According to the using situation, the long-term anti-fouling coating is suitable in ships and offshore facilities with low sailing rate, while the self-polishing anti-fouling coating is suitable for ships with fast sailing speed and high sailing rate. Because cuprous oxide is still toxic to the human body, the international community only allows it to exist as a transitional product, and it will be gradually banned in the future.
5. Special functional coatings
The most used special coatings mainly use epoxy resin as a substrate to add additives for special requirements.
Special functional coatings, including oil tank coatings, fireproof coatings, chemical tank coatings and heat-resistant coatings, have emerged with the further expansion of the marine market. In most cases, these coatings are custom produced according to the different cabin’s conditions and the different loads.