EVA Floating Heavy Duty Inflatable Solid Dock Foam Filled Marine Fender

The basic idea of fender selection is that it should be able to absorb the effective collision kinetic energy of the berthing ship during the impact, and the reaction force generated by the extrusion deformation should be as small as possible and must be smaller than the allowable reaction force of the berthing building or the allowable surface pressure of the berthing ship's side plate. its service life.

With the development of water transportation, the modernization of port equipment and the enlargement of ships, especially because the proportion of fenders in the cost of the terminal can be about 10%. Therefore, the deformation of the fender will absorb the reaction force, durability and the convenience of maintenance and installation of higher requirements. As a new type of fender, foam-filled fender overcomes some shortcomings of rubber fenders through the use of practice in several domestic ports. EVA fenders have been shown to meet a series of technical requirements for fenders and have been highly evaluated by using units.

EVA is a polymer material between rubber and plastic, it has many unique properties.

EVA elastomer, especially with microporous structure. In its impact by external forces, it can effectively absorb the impact energy, so that the external force is effectively attenuated, so that the structure is effectively protected. This is due to the impact of external forces, the first compression of the microporous within the elastomer, and then the reason for the compression of the material itself.

1.It has high tensile strength, generally up to 28-42Mpa. its elongation at break is also high, generally up to 400%-600%, up to 1000%.

2. Very high tear strength, up to 62kN/m, with the increase of temperature, its strength is slightly reduced.

3. Good corrosion resistance, about 9 times higher than the abrasion resistance of natural rubber. Especially in the presence of water, oil and other liquid media in the process of wet friction, its wear resistance is better than other materials.

4. The friction factor with steel plate is small, only 0.12.

5. Strong oil resistance, especially suitable for oil terminals.

6. Small density, floating in water.

Spraying polyurea elastomer technology has many advantages.

1. No catalyst, high reactivity, fast curing speed, can be sprayed on any oblique surface, curved surface and vertical surface without sagging phenomenon.

2. It is not sensitive to moisture and temperature, and the construction is not affected by the temperature of construction parts and environment, construction parts and air humidity, and the construction temperature range is -40-50℃.

3. It is a two-component coating with 100% solid content and does not contain any volatile organic solvents, which is friendly to the environment and no solvent volatilization causes the odor of volatilized solvents to permeate the construction site, so it can realize hygienic construction and harmless construction.

4. The construction process can adopt thermal spraying or rapping injection, and the single construction thickness can range widely from several hundred um to several cm, which overcomes the shortcomings of the traditional environmental protection coating process that requires several times of construction to reach the designed coating thickness.

5. It has excellent physical and chemical properties, high tensile strength, flexibility and elongation at break, wear resistance, anti-slip performance, solvent and salt spray aging performance, resistance to corrosion of seawater and general solvents. Hardness can be arbitrarily adjusted, feel from soft rubber Shao to hard elastomer Shao in the outdoor long-term use of non-powdering, non-cracking, non-shedding.

6. With good thermal stability, and good low temperature resistance, can work under 120 ℃ for a long time, can withstand 350 ℃ instant thermal shock.

7. Good reproducibility of substrate shape, continuous and dense coating, no joints, no bubbles and pinholes, beautiful and durable and practical. Can be added to a variety of pigments, short glass fibers and other fillers to make different colors, performance requirements of the coating products to meet the needs of customers for color and other aspects of performance.

It can be applied with special high-temperature and high-pressure spraying equipment, which is very efficient; the design thickness can be reached by a single spraying, and the equipment is designed with various working modes, which can be sprayed or injected. It is also possible to control the construction process and add rubber particles to achieve the anti-slip effect.

Technical Parameter