Pultruded Carbon Fibre Rods
Used in agriculture, kites, tents, model aircraft, model helicopters, infrastructure, cooling towers, chemical carriers, and more. In these applications, carbon fibre rods are primarily used as support rods, skeletons, and load-bearing ribs. They require high stiffness and lightweight construction to provide stable structural support.
Raw Materials
Carbon Fibre Type: Primarily T300-grade or equivalent domestically produced (e.g. CCF300) large-tow carbon fibres such as 24k and 48k, balancing performance and cost.
Resin System: General-purpose unsaturated polyester resin or epoxy resin. Polyester resin is more cost-effective and widely used; epoxy resin offers slightly better performance and stronger adhesion.
Physical and Mechanical Properties (Typical Values)
- Density: 1.5 - 1.6 g/cm³ (approximately 1/5 that of steel)
- Fibre Volume Content: 60% - 65%
- Diameter Range: Commonly Ø1.0 mm - Ø10.0 mm
- Straightness: A key specification, typically required to be ≤1.5 mm / 1000 mm
Mechanical Properties (Typical Values)
- Tensile Strength: ≥ 1500 MPa
- Tensile Modulus: ≥ 120 GPa
- Flexural Strength: ≥ 1200 MPa
- Flexural Modulus: ≥ 110 Gpa
Core Advantages and Features
- High Specific Stiffness: Extremely light weight yet extremely rigid, effectively ensuring the proper flight of the kite and the stability of the tent.
- Excellent fatigue resistance: Superior to metal materials, it can withstand repeated assembly and disassembly, as well as wind-induced vibration.
- Corrosion resistance: Resistant to sun and rain, it offers a long service life.
Main Applications
Kites: Supporting backbones for sports kites and stunt kites.
Tents: Poles and brackets for lightweight tents.
Others: Model aircraft (model aeroplanes), drone arms, fishing rods, flagpoles, advertising stands, etc.
Pultruded Carbon Fibre Tubes
Used in kites, tents, camping, model aeroplanes, model helicopters, remote-controlled models, machinery, and the chemical industry. Carbon fibre tubes are used in applications requiring higher flexural and torsional stiffness and are the mainstream structural component in these applications.
Raw Materials
Similar to carbon fibre rods, they utilise large-tow carbon fibre (T300 grade) and unsaturated polyester/epoxy resin.
Physical and Mechanical Properties (Typical Values)
- Density: 1.5 - 1.6 g/cm³ · Fibre Volume Content: 60% - 70%
- Specification Range: · Round Tube OD: Ø2 mm - Ø50 mm
- Wall Thickness: 0.5 mm - 2.0 mm (common thin-walled tube)
- Square Tube and Flat Tube: Also very common, with a variety of specifications.
- Straightness: ≤2.0 mm/1000 mm
Mechanical Properties (Typical Values)
- Tensile Strength: ≥ 1400 MPa
- Tensile Modulus: ≥ 120 GPa
- Flexural Strength: ≥ 1100 MPa
- Flexural Modulus: ≥ 110 GPa
- Compressive Strength: ≥ 600 Mpa
Core Advantages and Features
- Extremely High Specific Strength/Stiffness: This material achieves maximum lightweight while maintaining sufficient strength and stiffness, making it the preferred choice for high-performance kites and lightweight tents.
- Excellent Wind Resistance: The hollow tubular structure excels in withstanding forces from all directions, making it particularly suitable for curved tent poles.
- Easy Connection: Internal connectors allow for quick connection and disconnection of multiple tubing sections.
- Cost-Effectiveness: The high efficiency of the pultrusion process enables carbon fibre tubes to meet civilian needs at a relatively low cost.
Key Applications
Kites: Main beams and support tubes for large kites and kite boarding kites.
Tents: Poles for high-end hiking and camping tents, providing improved wind resistance and reduced weight.
Others: Drone frames, photography jibs, bicycle parts, and poles for sports equipment.