The importance of delayed amine hard bubble catalysts to corrosion protection in ship construction: durable protection in marine environments
Introduction
As the main tool for marine transportation, ships have been exposed to harsh marine environments for a long time and face serious corrosion problems. Corrosion not only affects the appearance of the ship, but also weakens its structural strength, shortens its service life, and even causes safety accidents. Therefore, corrosion protection technology in ship construction is crucial. As an efficient anti-corrosion material, the delayed amine hard bubble catalyst plays an important role in ship construction. This article will discuss in detail the importance of delayed amine hard bubble catalysts to corrosion protection in ship construction, especially the durable protection in marine environments.
1. The impact of marine environment on ship corrosion
1.1 Corrosion factors of marine environment
The corrosion of marine environment on ships mainly comes from the following aspects:
- Salt spray: Salt in seawater forms a salt spray in the air, attaching to the surface of the ship, accelerating the corrosion of metal.
- Humidity: The marine environment is high in humidity, and water films are easily formed on the metal surface, which promotes electrochemical corrosion.
- Temperature: The temperature of the ocean ambient changes greatly, high temperature accelerates corrosion reaction, and low temperatures may lead to metal embrittlement.
- Microorganisms: Microorganisms in the ocean, such as sulfate reducing bacteria, will accelerate the corrosion of metals.
1.2 Effects of corrosion on ships
The impact of corrosion on ships is mainly reflected in the following aspects:
- Decreased structural strength: Corrosion will weaken the structural materials of the ship and reduce its load-bearing capacity.
- Damaged appearance: Corrosion will cause rust spots, peeling and other phenomena on the surface of the ship, affecting the beauty.
- Increased maintenance costs: Corrosion requires regular maintenance and repair, increasing the operating costs of the ship.
- Safety Hazards: Severe corrosion may cause the ship’s structure to fail and cause safety accidents.
2. Characteristics of delayed amine hard bubble catalyst
2.1 Definition of delayed amine hard bubble catalyst
The delayed amine hard bubble catalyst is a catalyst used for the polyurethane hard bubble foaming reaction. It has the characteristics of delayed foaming and can control the foaming speed under specific conditions to form a uniform and dense foam structure.
2.2 Advantages of delayed amine hard bubble catalyst
- High-efficiency corrosion-proof: The foam structure formed by the delayed amine hard bubble catalyst has good sealing and permeability, effectively isolating external corrosion media.
- Durable protection: The foam structure is stable and can maintain corrosion resistance for a long time in the marine environment.
- Construction is convenient: The delayed amine hard bubble catalyst is easy to construct and can adapt to complex ship structures.
- Environmental Safety: The delayed amine hard bubble catalyst is non-toxic and harmless, and meets environmental protection requirements.
2.3 Product parameters of delayed amine hard bubble catalyst
| parameter name | parameter value |
|---|---|
| Appearance | Colorless to light yellow liquid |
| Density (g/cm³) | 1.05-1.10 |
| Viscosity (mPa·s) | 200-400 |
| Flash point (°C) | >100 |
| Storage temperature (°C) | 5-30 |
| Shelf life (month) | 12 |
III. Application of delayed amine hard bubble catalyst in ship construction
3.1 Anti-corrosion treatment of ship shells
The ship’s shell is a part that is directly exposed to the marine environment and is susceptible to corrosion. The retarded amine hard bubble catalyst can be used for corrosion protection treatment of ship shells, forming a uniform and dense foam protective layer to effectively isolate corrosive media such as salt spray and moisture.
3.2 Anti-corrosion treatment of ship internal structure
Although the internal structure of the ship, such as cabins, pipelines, etc., are not directly exposed to the marine environment, they are still affected by corrosion factors such as moisture and microorganisms. Retarded amine hard bubble catalysts can be used for corrosion protection at these sites, providing long-lasting protection.
3.3 Anti-corrosion treatment of marine equipment
Marine equipment, such as engines, pumps, etc., is in a high temperature and high humidity environment for a long time and is easily corroded. Retarded amine hard bubble catalysts can be used for corrosion protection in these devices and extend their service life.
IV. Retarded amine hard bubble catalystConstruction technology
4.1 Surface treatment
Before construction, the surface of the ship needs to be cleaned and treated to remove impurities such as oil stains and rust spots to ensure that the surface is dry and flat.
4.2 Catalyst spray
Spray the retardant amine hard bubble catalyst evenly on the surface of the ship, control the spray thickness to ensure a uniform foam protective layer.
4.3 Foaming reaction
Under specific conditions, the foaming reaction of the amine hard bubble catalyst is delayed to form a uniform and dense foam structure.
4.4 Curing treatment
After the foaming reaction is completed, curing treatment is required to ensure the stable foam structure and good corrosion resistance.
V. Performance test of delayed amine hard bubble catalyst
5.1 Anti-corrosion performance test
Through salt spray test, humidity and heat test and other methods, the anti-corrosion performance of the delayed amine hard bubble catalyst is tested to ensure its lasting protection effect in the marine environment.
5.2 Mechanical performance test
Through tensile test, compression test and other methods, the mechanical properties of the delayed amine hard bubble catalyst are tested to ensure that it has good structural strength and stability.
5.3 Environmental performance test
Through toxicity testing, volatile organic compounds testing and other methods, the environmental protection performance of delayed amine hard bubble catalyst is tested to ensure that it meets environmental protection requirements.
VI. Economic analysis of delayed amine hard bubble catalyst
6.1 Initial investment cost
The initial investment cost of delayed amine hard bubble catalyst is relatively high, but its efficient corrosion resistance and long-lasting protection can significantly reduce the maintenance cost of the ship.
6.2 Long-term economic benefits
By using delayed amine hard bubble catalyst, the service life of the ship is extended, the maintenance cost is reduced, and the long-term economic benefits are significant.
6.3 Environmental benefits
The delayed amine hard bubble catalyst is non-toxic and harmless, meets environmental protection requirements, and can reduce environmental pollution during ship construction and operation.
7. Future development trends of delayed amine hard bubble catalysts
7.1 High performance
In the future, delayed amine hard bubble catalysts will develop towards high performance, improving their corrosion resistance and mechanical properties, and adapting to more complex marine environments.
7.2 Environmental protection
With the increase in environmental protection requirements, delayed amine hard bubble catalysts will develop in a more environmentally friendly direction, reducing their impact on the environment.
7.3 Intelligent
In the future, the construction process of delayed amine hard bubble catalysts will develop in the direction of intelligence to improve construction efficiency and quality.
Conclusion
ExtendedThe hard bubble catalyst of agate plays an important role in corrosion protection in ship construction, especially in the long-lasting protection in marine environments. Its efficient corrosion resistance, long-lasting protection effect, convenient construction technology and environmentally friendly and safe characteristics make it an ideal choice for ship corrosion protection. With the continuous advancement of technology, delayed amine hard bubble catalysts will play a greater role in ship construction and provide strong guarantees for the safe operation and long-term use of ships.
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