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Carbon Fiber Filled PTFE Tube Raw Material for Mechanical Hydraulic Guide Parts
Wear-Resistant Anti-Creep PTFE Composite Tube, Chemical Resistant Conveying Pipe, Customizable
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Category: Carbon Fiber Filled PTFE Composite Tube
- Temperature: Operating temperature range: -40℃ ~ +260℃
- Material: PTFE+Carbon fiber
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Hardness: Shore D 60–66
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Product description:Carbon Fiber Filled PTFE Tube is a high-performance composite tube that takes PTFE as the base material and uniformly mixes carbon fiber. It effectively overcomes the shortcomings of pure PTFE such as softness, cold flow, poor wear resistance and low thermal conductivity.
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1. Product Overview
Carbon Fiber Filled PTFE Tube is a high-performance composite tube made of PTFE base material blended with carbon fiber (commonly 10%–25%), manufactured by moulding/extrusion and high-temperature sintering. It is black and opaque, effectively overcoming the defects of pure PTFE such as soft texture, cold flow, poor wear resistance and low thermal conductivity.
2. Core Typical Properties
- Temperature Range: -200℃ to +260℃ (short-term resistance up to 300℃)
- Mechanical Strength: Tensile strength 12–23 MPa; Compressive strength 22–28 MPa; Hardness Shore D 60–65
- Friction & Wear: Dry friction coefficient 0.16–0.17; Wear resistance 3–5 times of pure PTFE
- Physical Features: Density ~1.98 g/cm³; Water absorption ≤0.01%; Greatly improved thermal conductivity (0.25→0.5 W/m·K)
- Chemical Resistance: Retain excellent corrosion resistance of PTFE, resistant to strong acid, strong alkali, strong oxidants and most organic solvents; Not resistant to molten alkali metal and high-temperature fluorine gas
- Electrical Property: Anti-static / conductive available; Surface resistance adjustable at 10⁶–10¹¹ Ω, suitable for static dissipation working conditions
3. Main Advantages
- Wear & Creep Resistance: Carbon fiber framework improves hardness and anti-cold flow performance, not easy to deform under high pressure and long-term stress with longer service life.
- Thermal Conduction & Anti-static: Solve poor thermal conductivity and static accumulation of pure PTFE, ideal for high temperature, high speed and explosion-proof scenarios.
- Superior Corrosion Resistance: Maintain the chemical inertness of PTFE, compatible with over 98% chemical media.
- Wide Temperature Stability: No brittleness at ultra-low temperature, no softening at high temperature, stable performance under extreme working conditions.
4. Typical Applications
- Chemical & Petrochemical: Conveying pipeline for strong corrosive media; Lining for pump and valve sealing parts.
- Machinery & Hydraulic: Cylinder seal, guide ring, bearing bush, sliding bearing, high-speed wear-resistant moving parts.
- Oil & Gas Energy: Downhole anti-corrosion lining, anti-static conveying pipe, high-pressure sealing components.
- Electronics & Semiconductor: High-purity chemical transportation, heat insulation parts, anti-static carrier.
- Food & Pharmaceutical: FDA-grade sealing and conveying, non-adhesive, easy to clean, no precipitation.
5. Common Specifications & Processing Technology
- Moulding Process: Molded tube (large diameter, thick wall, high strength); Extruded tube (small diameter, thin wall, high mass production efficiency)
- Size Range: ID 6–200 mm; Wall thickness 2–20 mm; Length 100–2000 mm (customized available)
- Filling Ratio: Common 15%, 20%, 25% carbon fiber; Can be compounded with graphite, molybdenum disulfide for better self-lubrication
6. Selection Comparison by Carbon Fiber Filling Ratio
| Filling Ratio | Typical Performance | Core Advantages | Applicable Working Conditions | Not Recommended |
|---|---|---|---|---|
| 15% Carbon Fiber (General Grade) | Tensile:14–18 MPa Hardness:60–62 Shore D Thermal Conductivity:≈0.45 W/m·K Surface Resistance:10⁹–10¹¹ Ω | Balanced wear resistance, strength and cost | General chemical pipeline, low-pressure seal, guide ring, bearing bush, food & pharmaceutical conveying | High pressure (>2 MPa), explosion-proof static, long-term high temp (>220℃) |
| 20% Carbon Fiber (Balance Grade) | Tensile:18–22 MPa Hardness:62–64 Shore D Thermal Conductivity:≈0.50 W/m·K Surface Resistance:10⁷–10⁹ Ω | Optimized strength, creep resistance, thermal conduction and anti-static | Hydraulic cylinder seal, high-pressure pump valve, high-speed sliding parts, oil & gas anti-static pipeline | Ultra-high pressure (>3 MPa), strong oxidizing media |
| 25% Carbon Fiber (High Strength Wear-resistant Grade) | Tensile:22–25 MPa Hardness:64–66 Shore D Thermal Conductivity:≈0.55 W/m·K Surface Resistance:10⁶–10⁸ Ω | Best creep resistance & wear resistance, stable anti-static | High-pressure dynamic seal, heavy-duty bearing, high-speed/high-temperature wear parts, explosion-proof high-purity conveying | Strong oxidizing media, high insulation required occasions |
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