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China Suppliers Factory: Lightweight Water Blocking Filling Rope for Cable Protection Against Moisture
Product Description
Waterproof filling rope for cables is an important filling material in cable manufacturing. Its main function is to improve the waterproof performance of cables, while also enhancing the structural stability and durability of cables to a certain extent. The following is a detailed introduction to water blocking filling ropes for cables:
Definition & Function
Definition: Waterproof filling rope for cables is a specially designed filling material for the interior of cables, whose main components and structure have excellent waterproof performance.
- Water blocking effect: Effectively blocks moisture from penetrating into the interior of the cable, protecting the cable from moisture erosion and extending its service life.
- Structural support: Fills the gaps inside the cable to make the cable structure more stable and improve the compressive and tensile strength.
- Insulation protection: Enhances the insulation performance of cables to prevent insulation failure caused by moisture intrusion.
Materials & Classification
- Material: Includes water absorbing and expanding materials (such as water absorbing resins, water absorbing fibers, etc.) as well as synthetic fibers or composite materials with excellent water blocking properties. These materials typically have good water absorption, expansion, and weather resistance.
- Classification: Divided into various types, such as organic filling ropes (cotton fibers, hemp fibers, polyester fibers, etc.) and inorganic filling ropes (which may contain inorganic materials such as asbestos).
Application Scenarios
Waterproof filling ropes for cables are widely used in various cables that require high waterproof performance, such as communication cables, power cables, submarine cables, etc. Especially for cables used in humid, rainy, or underwater environments, the role of water blocking filling ropes is particularly crucial.
Parameters
Common Specification Table
| Diameter (mm) |
Unit weight (g/m) |
Water absorption capacity (ml/g) |
Conductivity (Ko/m) |
Tensile strength (N/mm) |
Elongation (%) |
Temperature resistance (℃) |
Water content (%) |
|---|---|---|---|---|---|---|---|
| 2±0.3 | 3.2±0.5 | ≥50 | / | ≥50 | ≥20 | ≥125 | ≤9 |
| 2.5±0.3 | 5.2±0.5 | ≥50 | / | ≥50 | ≥20 | ≥125 | ≤9 |
| 3±0.3 | 5.9±1.0 | ≥50 | / | ≥60 | ≥20 | ≥125 | ≤9 |
| 4±0.5 | 6.8±1.0 | ≥50 | / | ≥60 | ≥20 | ≥125 | ≤9 |
| 5±0.5 | 7.9±1.0 | ≥50 | / | ≥60 | ≥20 | ≥125 | ≤9 |
| 6±0.5 | 9.6±1.0 | ≥50 | / | ≥90 | ≥20 | ≥125 | ≤9 |
| 7±1 | 15.1±2.0 | ≥50 | / | ≥90 | ≥20 | ≥125 | ≤9 |
| 9±1 | 25.2±2.0 | ≥50 | / | ≥90 | ≥20 | ≥125 | ≤9 |
| 10±1 | 27.3±3.0 | ≥50 | / | ≥100 | ≥20 | ≥125 | ≤9 |
| 12±2 | 29.9±3.0 | ≥50 | / | ≥100 | ≥20 | ≥125 | ≤9 |
| 16±3 | 40.9±5.0 | ≥50 | / | ≥150 | ≥20 | ≥125 | ≤9 |
| 20±3 | 63.0±5.0 | ≥50 | / | ≥200 | ≥20 | ≥125 | ≤9 |
| 22±3 | 70.0±5.0 | ≥50 | / | ≥200 | ≥20 | ≥125 | ≤9 |
| 30±4 | 100.0±10.0 | ≥50 | / | ≥250 | ≥20 | ≥125 | ≤9 |
| 34±3 | 125.0±10.00 | ≥50 | / | ≥250 | ≥20 | ≥125 | ≤9 |
| Support customizing other specifications | |||||||
Detailed Image
Frequently Asked Questions (FAQ)
What is the primary function of a waterproof filling rope in cables?
The primary function is to prevent water and moisture from penetrating the cable core, ensuring long-term electrical insulation. Additionally, it helps maintain the cable's structural shape, providing compressive and tensile support.
How does the water-blocking mechanism work?
The rope contains water-absorbing and expanding materials (like superabsorbent resins or fibers). When moisture penetrates the outer sheath, these materials quickly expand to block the gaps and stop the longitudinal flow of water.
What types of cables typically use these filling ropes?
They are widely used in submarine cables, power cables, communication cables, and optical fiber cables, particularly those installed in damp, underground, or marine environments.
What is the temperature resistance of your waterproof filling ropes?
Our standard waterproof filling ropes feature a temperature resistance of ≥125°C, ensuring reliable performance even during high-temperature extrusion and cable operations.
Do you support custom specifications for cable manufacturers?
Yes, we provide full customization options for diameters, unit weights, and other technical properties to perfectly match your specific cable manufacturing requirements.