PUR Customized Polyurethane Hydrolysis-Resistant Kevlar Seawater-Resistant Cable

【PUR Kevlar Anti-Seawater Cable, 6/8-Core Polyurethane Underwater Load-Bearing Cable, Custom Hydrolysis-Resistant Zero Buoyancy Cable】Shanghai Okesen Wire & Cable Co., Ltd. has been dedicated to the marine cable industry for many years. Leveraging extensive industry experience and advanced technology, the company has introduced the PUR Kevlar anti-seawater cable series. This article provides a comprehensive overview of this deep-sea applicable underwater load-bearing cable from five aspects: application scope, installation methods, precautions, material characteristics, and manufacturing processes, showcasing its unique advantages and practical value.

1. Application Scope of Marine Cables

Marine environments impose extremely high demands on cables, covering various fields such as underwater communication, marine monitoring, seabed exploration, and marine engineering. With its 6-core or 8-core design and polyurethane sheath, the PUR Kevlar anti-seawater cable is particularly suitable for:

• Power and signal transmission for seabed observation instruments

• Energy supply for offshore oil and gas platforms and floating devices

• Power and control lines for underwater robots (ROVs)

• Underwater sensors and environmental detection equipment

• Diver communication and lighting systems

Additionally, the cable features zero buoyancy, ensuring it neither floats uncontrollably nor sinks excessively underwater, significantly enhancing safety and ease of maintenance.

2. How to Install PUR Kevlar Anti-Seawater Cable

Proper installation procedures directly impact the cable's lifespan and performance. Key steps during installation include:

1. Environmental Assessment: Select an appropriate laying route to avoid mechanical abrasion and geologically active areas.

2. Gradual Deployment: Use submarine cable-laying machines or manual assistance to prevent damage to the internal structure due to excessive force.

3. Tension Control: Maintain appropriate tension to avoid slack, which could cause tangling or breakage.

4. Anchor Point Fixation: Install stable anchor points at critical nodes to prevent cable drift or misalignment.

5. Connection Handling: Use sealing technology for waterproof connectors to ensure leak-free long-term underwater operation.

A careful and detailed installation process, combined with on-site environmental and equipment requirements, maximizes the performance advantages of the PUR Kevlar cable.

3. Precautions During Installation

• Avoid Excessive Bending: The bending radius of marine cables should exceed the design minimum to prevent breakage of metal conductors or Kevlar fibers.

• Environmental Temperature Impact: In low-temperature water, the polyurethane sheath may harden; avoid sharp turns during cable laying.

• Prevent Mechanical Damage: Avoid contact with sharp rocks or metal objects; use protective sleeves during construction if necessary.

• Prevent Salt Spray Corrosion: Although the PUR sheath is corrosion-resistant, connections and interfaces require regular inspection and maintenance.

• Prevent Biofouling: Marine organism attachment may increase cable load; use anti-fouling coatings as needed.

Systematic maintenance and inspection can detect issues early, extending the cable's operational life.

4. Product Material Analysis

The PUR (polyurethane) sheath, a key material for seawater resistance, offers excellent abrasion resistance, hydrolysis resistance, and salt spray corrosion resistance. Its elasticity and toughness effectively prevent cracking of the cable outer layer due to wave冲刷 and mechanical damage.

The inner conductor uses high-purity copper cores to ensure low resistance and stable signal transmission. Kevlar fibers serve as the load-bearing skeleton, providing extremely high tensile strength and preventing cable breakage under tension. Their lightweight nature contributes to the zero-buoyancy design, ensuring neutral buoyancy in seawater.

The inner sheath and insulation layer are made of high-performance materials that resist moisture penetration and salt erosion, ensuring long-term stability of electrical performance.

5. Rigorous Manufacturing Process

Shanghai Okesen Wire & Cable Co., Ltd. adheres to an excellence-driven production process. All PUR Kevlar anti-seawater cables undergo multiple inspections:

1. Material Selection: Strictly selected raw materials ensure that polyurethane and Kevlar fibers meet international marine standards.

2. Precision Stranding: Conductors and Kevlar fibers are interwoven in strict proportions to ensure uniform and stable mechanical performance.

3. Sheath Extrusion: High-precision equipment is used for polyurethane sheath extrusion, ensuring uniform thickness and a defect-free surface.

4. Hydrolysis Resistance Treatment: Special processes enhance the molecular stability of polyurethane, preventing material degradation due to long-term immersion.

5. Rigorous Testing: Includes pressure resistance tests, bending tests, salt spray tests, and insulation resistance tests to ensure products meet or exceed industry standards.

Continuous technological innovation and quality control make the PUR Kevlar anti-seawater cable a reliable choice in the marine engineering field.

Conclusion

As a marine cable manufacturer, Shanghai Okesen Wire & Cable Co., Ltd.'s PUR Kevlar anti-seawater cable, with its 6/8-core design and polyurethane sheath combined with the Kevlar load-bearing skeleton, fully meets the demands of complex marine environments. Its zero buoyancy and hydrolysis resistance ensure long-term stable underwater operation, making it suitable for various marine engineering applications.

Choosing Okesen means choosing safety, efficiency, and durability. Customers with marine cable needs are welcome to contact us to jointly advance the development and application of marine technology.