POLYUREA. WATERPROOFING IN THE CONSTRUCTION OF NEW SHIPS. Shipbuilding is a complex and technologically advanced process requiring the highest level of engineering solutions and materials. One of the key aspects to be considered in new shipbuilding is waterproofing. This process protects the ship from water ingress and corrosion, ensuring its longevity and safety during operation. One of the most modern and effective waterproofing materials available today is polyurea.

What is polyuria?

Polyurea is a binary polymeric material produced by reacting isocyanate with amine groups. It is characterised by its rapid curing and excellent mechanical properties. Polyurea coatings can be applied to a wide range of surfaces, including metal, concrete, plastic and other materials. These coatings are highly resistant to chemical attack, abrasion, ultraviolet rays and extreme temperatures.

Advantages of polyurea in new shipbuilding

1. Water and corrosion resistance
   Polyurea creates an extremely tough, waterproof coating that provides excellent protection against corrosion of the ship’s structure. This is particularly important as ships are constantly exposed to salt sea water, which can quickly damage metal parts.
2. Fast curing
   One of the biggest advantages of polyurea is its fast curing. After application, polyurea cures in seconds, reducing shipbuilding time. This allows for a quicker transition to other works and reduces the overall construction time.
3. Flexibility and resistance to cracking
   Polyurea retains its elasticity even at low temperatures, making it resistant to cracking and mechanical damage. This is particularly important for ships operating in extreme conditions where temperature fluctuations and mechanical shocks can be severe.
4. Excellent adhesion
   Polyurea adheres well to a wide range of surfaces, including metal, concrete and plastic. This provides reliable waterproofing and reduces the risk of the coating separating or weakening over time.
5. Resistance to chemical attack
   Polyurea is resistant to many chemicals, including petroleum products, acids and alkalis. This ensures that the vessel will be well protected against a wide range of pollutants and chemical corrosion.

Applications of polyurea in shipbuilding

Polyurea can be used in a wide range of ship components, including:

• Bottom protection: for protection against water and mechanical damage.
• Deck coating: for resistance to abrasion and chemical attack.
• Interior parts of the ship: for protection against moisture and corrosion.

Conclusion

In new ship construction, waterproofing is one of the most important aspects to ensure the longevity and safety of a ship. Polyurea is a modern, efficient and reliable material that can significantly improve the quality of ship waterproofing. Due to its water resistance, fast curing, flexibility, excellent adhesion and resistance to chemical attack, polyurea is becoming an increasingly popular choice in shipbuilding.

We recommend the use of polyurea in new shipbuilding to ensure the highest quality waterproofing and long-lasting protection of the ship against environmental influences.