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China Suppliers GFRP Strength Member for Optical Cables – Factory Reinforcement Solution for Enhanced Durability
Product Introduction
Optical cable reinforcement is an important component of optical cable, generally placed in the center of the optical cable, its role is to support the optical fiber unit or optical fiber bundle, improve the tensile strength of the optical cable. Traditional optical cables use metal reinforcements. FRP non-metallic reinforcement parts are more and more used in various optical cables for their advantages of light weight, high strength, corrosion resistance and long life.
GFRP fiber optic cable reinforcement core (glass fiber) is a new type of high performance engineering composite material, which is made by pultrusion process after mixing resin as matrix material and glass fiber as reinforcement material. GFRP non-metallic fiber optic cable reinforcement overcomes the defects of traditional metal fiber optic cable reinforcement, has excellent corrosion resistance, lightning resistance, electromagnetic field interference resistance, high tensile strength, light weight, environmental protection, energy saving and other significant advantages, is widely used in a variety of fiber optic cables.
GFRP Features & Advantages
High tensile strength, high modulus, low thermal conductivity, low extension, low expansion, wide temperature range.
Non-metallic materials are not sensitive to electric shock, suitable for lightning, rain and other climatic environment areas.
Chemical corrosion resistance; compared with the metal core, GFRP reinforced core will not produce gas caused by the chemical reaction of metal and oil paste and affect the fiber transmission index.
Compared with the metal core, GFRP reinforced core has the characteristics of high tensile strength, light weight, excellent insulation performance, and no electromagnetic interference.
The cable with GFRP reinforced core can be installed next to the power line and the power supply device, and will not be interfered by the induced current generated by the power line or the power supply device.
Smooth surface, stable size, easy processing and laying, wide range of application.
GFRP Core Specifications
| Standard Diameter Table Φ (Unit: mm) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.40 | 0.50 | 0.60 | 0.70 | 0.80 | 0.90 | 1.00 | 1.10 | 1.20 | 1.30 | 1.40 |
| 1.50 | 1.60 | 1.70 | 1.80 | 1.90 | 2.00 | 2.10 | 2.20 | 2.30 | 2.40 | 2.50 |
| 2.60 | 2.70 | 2.80 | 3.00 | 3.30 | 3.40 | 3.50 | 3.80 | 4.00 | 4.60 | 5.00 |
Standard Length Information
- Diameter (Φ0.40-Φ2.3mm): Standard delivery length 50.4km/barrel or customized;
- Diameter (Φ2.40-Φ3.5mm): Standard delivery length 25.2km/barrel or customized;
- Diameter (Φ3.60-Φ5.0mm): Standard delivery length 12.5km/barrel or customized;
- Note: Non-standard diameter and non-standard length can be produced according to user requirements.
GFRP Flat Core Specifications
| Standard Flat Core Dimensions | ||||||
|---|---|---|---|---|---|---|
| 0.60 x 1.30 mm | 0.70 x 3.00 mm | 1.00 x 3.00 mm | 1.20 x 3.80 mm | 1.27 x 3.00 mm | 1.40 x 3.00 mm | 1.60 x 3.00 mm |
Standard Length Information
- Thickness (1.00mm and below): Standard delivery length ≧25km (Jet code meter)
- Thickness (1.20mm and above): Standard delivery length ≧15km (Inkjet meter)
- Note: Non-standard size and non-standard length can be produced according to user requirements.
Packaging & Storage
Wooden cable tray
Plastic cable tray
GFRP Reinforced Core Storage Guidelines
- The cable tray shall not be placed in a flat position and shall not be stacked high;
- Disc reinforcement core shall not be made long distance rolling;
- Shall not be subjected to collision, crushing and any mechanical damage;
- Prevent moisture and long-term exposure, and prohibit long-term rain;
- Storage and transportation temperature range: -40°C ~ +60°C.
Technical Parameters
| Test Item | Unit (or condition) | Technical Parameter |
|---|---|---|
| Out-of-roundness | % | <5 |
| Appearance | - | No burrs, no cracks, feel smooth |
| Diameter tolerance | % | ±2 |
| Specific gravity | g/cm3 | 2.05~2.15 |
| Tensile strength | MPa | ≥1100 |
| Tensile modulus of elasticity | GPa | ≥50 |
| Bending strength | MPa | ≥1100 |
| Flexural elastic modulus | GPa | ≥50 |
| Elongation at break | % | 2.5% ≤ X ≤ 4% |
| Coefficient of linear expansion | 1/℃ (-30℃~+80℃) | ≤8×10-6 |
| Thermal shrinkage rate | % | 0 |
| Water absorption | % | ≤0.1 |
| Minimum instantaneous bending radius | mm (20℃±5℃) | 25D |
| High temperature bending property | (50D, 120℃, 100h) | No burrs, no cracks, feel smooth, no bending, can spring straight |
| Low temperature bending property | (50D, -40℃, 100h) | No burrs, no cracks, feel smooth, no bending, can spring straight |
| Torsional property | ±360°/m | Indeterminate |
Frequently Asked Questions (FAQ)
What is the main function of GFRP optical cable reinforcement?
It is primarily placed in the center of the optical cable to support the optical fiber unit or bundle, significantly improving the tensile strength of the entire cable.
Why choose GFRP over traditional metal reinforcements?
GFRP non-metallic reinforcements offer significant advantages such as lighter weight, higher tensile strength, excellent chemical corrosion resistance, long lifespan, and immunity to electromagnetic interference.
Can GFRP reinforced cables be installed near power lines?
Yes. Because GFRP is a non-metallic material with excellent insulation properties, it is not sensitive to electric shock and will not be interfered with by induced currents generated by power lines or devices.
What are the standard storage and transportation temperatures for GFRP cores?
The recommended storage and transportation temperature range for GFRP cores is between -40°C and +60°C.
How should GFRP reinforced cores be properly stored?
Cable trays should never be placed flat or stacked high. They must be protected from collisions, crushing, moisture, long-term sun exposure, and rain. Long-distance rolling of disc reinforcement cores is also strictly prohibited.
Are custom diameters and lengths available for GFRP cores?
Yes, both non-standard diameters and non-standard delivery lengths can be customized and produced according to specific user requirements.