Product Description
HDPE Marine board comprehensive introduction
HDPE (High density polyethylene) Marine sheet is a kind of high performance plastic material widely used in shipbuilding and Marine engineering. Its unique physical and chemical properties make it excellent in corrosion resistance, lightweight, wear resistance and other fields. Here's a breakdown based on the latest industry data:
Core Features And Advantages
1. Corrosion resistance
- It can resist the erosion of seawater, salt spray, oil and various chemical media, and its service life is 3-5 times that of traditional metal materials.
- Case: When used for liner of ship cargo hold, it can avoid cargo contamination caused by corrosion of steel cargo hold.
2. Lightweight design
- The density is only 0.94-0.96 g/cm³, which is lighter than water, significantly reducing the ship's own weight and improving load efficiency and fuel economy.
3. Excellent impact resistance and wear resistance
- Impact strength of 40-60 kJ/m², suitable for ship anti-collision fender, deck anti-skid layer and other vulnerable parts [[5]()][[8]()].
- The wear resistance is more than 6 times that of carbon steel, and the maintenance frequency can be reduced by 80% when conveying chute liner.
4. Waterproof and low water absorption
- Water absorption < 0.01%, stable performance after long-term immersion, suitable for the manufacture of hull seals, waterproof partitions, etc.
Main application scenarios
Application position: Specific components: Performance advantage
Hull structure: The whole hull, buoy, anti-collision fender of small fishing vessel: lightweight, seawater corrosion resistance, mature welding technology
Cargo hold system: bulk cargo hold lining board, funnel lining board, conveyor belt roller : wear-resistant and anti-sticking to avoid material caking:
Deck and protection: anti-skid deck, dock fender and dock block: have low friction coefficient (0.1-0.15) and are resistant to UV aging.
Special Equipment: Dredging ship chain bucket liner, lifeboat parts, underwater robot shell : low temperature resistance (-50℃) and biological attachment resistance.
Production Process And Standards
1. The best processing technology
- Using extrusion or molding process, it can produce plates with thickness of 5-200mm and width of 6.2m.
- The welding process needs to control the temperature (200-230 ° C), and single-sided welding may result in a decrease in yield strength of about 15%.
2. Industry standard
- Compliant with ISO 14692 (glass reinforced plastics/plastics for oil and gas industry), GB/T 17643 (geosynth materials) and other standards.
Marine grade HDPE is subject to salt spray resistance test (ASTM B117) and biotoxicity test (IMO MSC.215(82)).
- Environmental protection transformation: replace wooden dock fender and reduce Marine ecological pollution.
Summary
With its light weight, corrosion resistance, easy processing and other characteristics, HDPE Marine sheet is gradually replacing metal and wood, becoming the key material for modern ship manufacturing. In the future, with the development of modified technologies (such as carbon fiber reinforcement), its application in high-end fields such as deep submersible vehicles and offshore wind power platforms will be further expanded.
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