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China Suppliers GFRP Strength Member for Optical Cables - Factory-Direct Cable Reinforcement Solutions
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, improving 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 a matrix material and glass fiber as a 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, and is widely used in a variety of fiber optic cables.
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 a matrix material and glass fiber as a 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, and is widely used in a variety of fiber optic cables.
GFRP Features & Advantages
(1) High tensile strength, high modulus, low thermal conductivity, low extension, low expansion, wide temperature range.
(2) Non-metallic materials are not sensitive to electric shock, suitable for lightning, rain and other climatic environment areas.
(3) 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.
(4) Compared with the metal core, GFRP reinforced core has the characteristics of high tensile strength, light weight, excellent insulation performance, and no electromagnetic interference.
(5) 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 device.
(6) 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:
• 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
| 0.60x1.30mm | 0.70x3.00mm | 1.00x3.00mm | 1.20x3.80mm | 1.27x3.00mm | 1.40x3.00mm | 1.60x3.00mm |
Standard Length:
• 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
- (1) The cable tray shall not be placed in a flat position and shall not be stacked high.
- (2) Disc reinforcement core shall not be made for long-distance rolling.
- (3) Shall not be subjected to collision, crushing, and any mechanical damage.
- (4) Prevent moisture and long-term exposure, and prohibit long-term rain.
- (5) Storage and transportation temperature range: -40°C ~ +60°C.
Technical Parameter
| 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 GFRP optical cable reinforcement?
GFRP (Glass Fiber Reinforced Plastic) is a high-performance engineering composite material made by pultrusion process after mixing resin and glass fiber. It is used in the center of optical cables to support the fiber unit and improve tensile strength.
What are the main advantages of GFRP over traditional metal cores?
Unlike metal cores, GFRP offers excellent corrosion resistance, lightning resistance, and no electromagnetic interference. It also features high tensile strength, light weight, and excellent insulation performance.
Can cables with GFRP cores be installed near power lines?
Yes. Because GFRP is a non-metallic material with excellent insulation properties, it will not be interfered with by induced currents generated by power lines or power supply devices.
What is the safe temperature range for storing GFRP reinforced cores?
The recommended storage and transportation temperature range for GFRP reinforced cores is between -40°C and +60°C.
What standard diameters are available for GFRP cores?
Standard diameters range from 0.40mm up to 5.00mm. Additionally, non-standard diameters and custom lengths can be produced based on specific user requirements.
How should GFRP cable trays be properly stored?
Cable trays should not be placed flat or stacked high. They must be protected from collisions, crushing, moisture, and long-term rain or exposure. Long-distance rolling of the discs is also prohibited.