In the marine transportation industry, the stability and reliability of ship fuel systems are directly related to the safe operation and economic benefits of ships. As an important component of the fuel system, the performance of the fuel connection hose directly affects the efficiency of fuel delivery and the overall performance of the ship. However, due to the long-term operation of ships in harsh marine environments, fuel connecting hoses are easily corroded by various factors such as ultraviolet radiation, high temperature, high humidity, salt spray, etc., leading to aging, hardening, cracking and other problems, thereby affecting their service life and safety. Therefore, the anti-aging design of multi-functional marine fuel oil connecting hose to extend its service life has become an urgent problem to be solved in the current shipbuilding industry. This paper will discuss the anti-aging design of multi-functional marine fuel oil connecting hose from three aspects: material selection, structural design and surface treatment technology.

 

1、 Material selection: improvement of aging resistance

The selection of materials is the key to the anti-aging design of multi-functional marine fuel oil connecting hoses. Traditional hose materials, such as rubber, plastic, etc., although have certain elasticity and corrosion resistance, are prone to aging, hardening, and other problems when exposed to harsh environments for a long time, leading to a decrease in hose performance. Therefore, the selection of materials with excellent anti-aging performance is the key to extend the service life of the hose.

 

High performance elastomeric materials

In recent years, with the continuous development of material science, high-performance elastomer materials, such as thermoplastic elastomer (TPE), thermoplastic polyurethane (TPU), etc., are widely used in marine fuel connection hoses because of their excellent aging resistance, oil resistance, chemical corrosion resistance and other properties. These materials not only have excellent elasticity, can maintain stable performance under various complex working conditions, but also have excellent anti-aging performance, and can resist the erosion of ultraviolet, high temperature, high humidity and other harsh environments for a long time.

 

Nanocomposite materials

The emergence of nanocomposites provides a new choice for the anti-aging design of multi-functional marine fuel oil connecting hoses. The strength, toughness and anti-aging properties of the materials can be significantly improved by introducing nano particles into the materials. For example, inorganic nanoparticles such as nano silica and nano alumina can be added as reinforcing agents to elastomeric materials to form nanocomposites. This material not only has excellent mechanical properties, but also has outstanding heat resistance, weather resistance, and aging resistance, which can significantly improve the service life of hoses.

 

2、 Structural design: Enhance the overall performance of the hose

In addition to material selection, structural design is also an important aspect of anti-aging design of multi-functional marine fuel oil connecting hose. Reasonable structural design can not only improve the mechanical properties such as pressure bearing capacity and tensile resistance of hoses, but also reduce stress concentration and fatigue damage during long-term use, thereby extending their service life.

 

Multi layer composite structure design

Multi layer composite structure design is a commonly used structural design method for multifunctional ship fuel connection hoses. By combining materials with different properties, hoses with excellent comprehensive performance can be formed. For example, the inner layer can be made of oil resistant and corrosion-resistant elastic materials to ensure the purity and safety of the fuel; High strength fibers or steel wire weaving layers can be used in the middle layer to improve the pressure bearing capacity and tensile resistance of the hose; The outer layer can be made of wear-resistant and anti-aging materials to protect the hose from the erosion of the external environment.

 

Optimize joint design

The joint is one of the parts of the multifunctional ship fuel connection hose that is prone to problems. Therefore, optimizing the joint design and improving the sealing performance and anti-aging performance of the joint are of great significance for extending the service life of the hose. Special joint materials and structural design can be used, such as the close fit between the metal joint and the hose body, the sealing structure inside the joint, etc., to improve the sealing performance and anti-aging performance of the joint.

 

3、 Surface treatment technology: improving the weather resistance and corrosion resistance of hoses

Surface treatment technology is an effective means to improve the weather resistance and corrosion resistance of multifunctional ship fuel connection hoses. By treating the surface of the hose, a protective layer can be formed to protect the hose from harsh environments such as ultraviolet radiation, high temperature, high humidity, salt spray, etc.

 

Coating technology

Coating technology is a commonly used surface treatment technique. By coating the surface of the hose with a coating material that has excellent weather resistance and corrosion resistance, the weather resistance and corrosion resistance of the hose can be significantly improved. For example, polyurethane, epoxy resin and other coatings can be used to coat the hose, forming a dense protective layer. This coating not only has excellent weather resistance and corrosion resistance, but also has excellent adhesion and wear resistance, which can protect the hose from external environmental erosion for a long time.

 

Surface modification technology

Surface modification technology is a method of improving the weather resistance and corrosion resistance of materials by changing their surface properties. For example, surface modification techniques such as plasma treatment and laser treatment can be used to modify the surface of hoses. These technologies can alter the chemical composition and physical structure of the hose surface, thereby improving its weather resistance and corrosion resistance.

 

epilogue

In conclusion, the anti-aging design of multi-functional marine fuel oil connecting hose is a complex problem involving material selection, structural design and surface treatment technology. By using new materials such as high-performance elastomer materials and nanocomposites, optimizing structural design, and adopting surface treatment technologies such as coating technology and surface modification technology, the anti-aging performance of the hose can be significantly improved and its service life can be extended. This is of great significance for improving the stability and reliability of ship fuel systems and reducing operating costs. In the future, with the continuous development of material science and manufacturing technology, the anti-aging design of multi-functional marine fuel oil connecting hose will pay more attention to the environmental protection, recyclability of materials and the application of intelligent monitoring technology to meet the needs of the shipbuilding industry for high-performance and high reliability hoses.