Anti-corrosion And Wear-resistant Solutions of Ultra-high Molecular Weight Polyethylene Materials in Marine Engineering

Engineering plastics such as polyethylene sheets and polyethylene rods have shown significant advantages in the application of ocean-going ships and docks, mainly reflected in the following aspects:

1. Corrosion resistance and environmental erosion resistance

Polyethylene materials (such as HDPE and UHMWPE) have extremely strong chemical corrosion resistance and can resist the erosion of seawater, salt spray, oil pollution and acid-base media.

For example, the ship piping system uses polyethylene pipes (such as PPH pipes) instead of metal pipes to avoid leakage problems caused by seawater corrosion and extend the service life.

The dock fender veneer panel maintains stable performance in the marine environment for a long time through the UV resistance and aging resistance of ultra-high molecular weight polyethylene (UHMWPE).

2. Lightweight and high mechanical strength

The density of polyethylene material is only 1/8 of that of steel, which can significantly reduce the deadweight of the ship and improve fuel efficiency and cargo capacity.

At the same time, its impact strength is 10 times that of nylon and 8 times that of polytetrafluoroethylene. It is suitable for ship anti-collision components (such as fenders) and dock structures. It can absorb the impact energy when the ship is berthing and reduce the maintenance cost of the dock.

3. Low maintenance and long life

The self-lubricating and wear-resistant properties of polyethylene materials reduce the wear of mechanical parts (such as bearings and gears) and do not require frequent lubrication and maintenance.

For example, UHMWPE fender panels can reduce the loss caused by friction in dock applications, and their service life is 2-3 times that of metal materials.

In addition, its non-adhesive properties reduce the risk of pipeline blockage and ensure long-term stable operation of the system.

4. Environmental protection and versatility

Polyethylene materials are non-toxic, recyclable, meet environmental protection requirements, and are suitable for ship drinking water systems and marine ecological sensitive areas.

In terms of functional expansion, polyethylene can be processed into complex shapes through injection molding, welding and other processes to meet the needs of various scenarios such as ship pipelines, cabin partitions, and deck coverings.

In summary, polyethylene engineering plastics have become an irreplaceable key material in modern ship and dock engineering with their comprehensive performance advantages, promoting the industry to continue to develop in the direction of lightweight and environmental protection.