Most of the traditional ship repair and construction methods are riveting, bolting, welding and other fixed methods. These methods have high requirements, are easy to damage the hull, and the maintenance cost is high. Slowly, marine adhesive products replaced the traditional fixing methods. For ships sailing in complex and harsh environments such as rivers, lakes and seas for a long time, the marine adhesive must have the properties of seawater resistance, atmospheric aging resistance, oil resistance, high and low temperature alternating resistance, flame retardant and vibration resistance. Some cabin bonding requires that the marine adhesive is non-toxic, tasteless and beautiful. Ship repair generally requires on-site operation, and the process requirements are simple and fast.

1. Application of marine adhesive products in hull Composites

Marine FRP, i.e. glass fiber reinforced plastic, is characterized by light weight, high strength, corrosion resistance, chemical adhesion resistance, good dielectric and microwave penetration, good impact toughness, beautiful appearance, excellent designability, low cost and simple process. It has been widely used in the manufacture of fishing boats, cruise ships, racing boats, submarines and minesweepers. FRP is generally used in ship hull assembly with bonding and mechanical connection, which not only makes use of the advantages of marine adhesive products, but also ensures the sufficient strength and reliability of joints. The connection step is bonding first and then mechanical connection. It is commonly used in FRP bonding in shipbuilding industry.

2. Application of marine adhesive products in hull metal structure

In the ship hull metal structure, a large number of metal alloy materials such as carbon steel, high-strength steel, high-quality carbon structural steel, alloy structural steel, cast steel, cast iron, aluminum alloy, magnesium aluminum alloy, titanium alloy and so on are used. These metal main structures are generally connected by welding, but in order to reduce stress concentration and improve the chemical corrosion resistance of different metal materials, bonding can be used for connection. Such as two-component acrylic acid, two-component epoxy, etc.

3. Application of marine adhesive products in submarine silencing tile installation

Anechoic tile is a new type of submarine stealth equipment gradually matured with the development of modern sound-absorbing materials. As an effective means to suppress noise and vibration, reduce the intensity of acoustic targets and improve the concealment of submarines, anechoic tile technology has been widely used by naval powers all over the world. Anechoic tiles are generally composed of high molecular polymers such as synthetic rubber, such as styrene butadiene rubber, polyurethane fiber and polysulfide rubber. Large area anechoic tiles fall off on nuclear submarines and other submarines in various countries. This adhesive needs to have bonding, high strength, impact resistance, good durability, salt fog resistance, seawater resistance, vibration resistance, and even certain damping and noise reduction performance. Modified silane, organic rubber, etc.