China Suppliers Factory GFRP Strength Member for Optical Cables – Enhanced Tensile Strength and Support
Product Introduction
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
| 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 |
GFRP Flat Core Specifications
| 0.60x1.30mm | 0.70x3.00mm | 1.00x3.00mm | 1.20x3.80mm | 1.27x3.00mm | 1.40x3.00mm | 1.60x3.00mm |
Packaging & Storage
- 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 |
What is GFRP optical cable reinforcement?
GFRP (Glass Fiber Reinforced Plastic) non-metallic fiber optic cable reinforcement is a high-performance engineering composite material. It is manufactured using a pultrusion process by mixing resin as the matrix and glass fiber as the reinforcement. It is placed in the center of optical cables to support the fiber units and improve tensile strength.
What are the main advantages of using GFRP over metal cores?
GFRP offers excellent corrosion resistance, lightning resistance, and electromagnetic interference resistance. Unlike metal cores, it is lightweight, has high tensile strength, provides excellent insulation, and will not produce harmful gases from chemical reactions with oil pastes.
Can GFRP reinforced cables be installed near power lines?
Yes. Because GFRP is a non-metallic material with excellent insulation properties, cables using GFRP cores can be safely installed next to power lines and supply devices without being interfered with by induced currents.
What are the standard delivery lengths for GFRP cores?
Standard delivery lengths vary by diameter: 50.4km/barrel for Φ0.40-Φ2.3mm, 25.2km/barrel for Φ2.40-Φ3.5mm, and 12.5km/barrel for Φ3.60-Φ5.0mm. Custom lengths and diameters can also be produced according to user requirements.
How should GFRP reinforced cores be stored properly?
Cable trays should not be laid flat or stacked high. They must be protected from collision, mechanical damage, moisture, long-term exposure to the sun, and rain. The safe storage and transportation temperature range is between -40°C and +60°C.