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Introduction to Black PEEK Sheet
Black PEEK sheet is a plate-shaped profile made from polyetheretherketone (PEEK) resin as the base material, with carbon black or other black colorants added, and manufactured through high-temperature extrusion or compression molding processes. The black coloration is not merely for aesthetic purposes but serves to meet specific functional and application environmental requirements. It fully inherits all the exceptional properties of pure PEEK, making it one of the key materials in high-end industrial sectors.
Core Characteristics (Inherits and Reinforces All PEEK Advantages)
Black PEEK sheet completely retains the top-tier performance of pure PEEK:
Exceptional Heat Resistance: Long-term service temperature up to 250°C, short-term resistance above 300°C.
Extremely High Mechanical Strength: High strength, high rigidity, excellent fatigue and creep resistance.
Outstanding Chemical Stability: Resistant to most chemical solvents and pharmaceuticals, except for strong oxidizing acids like concentrated sulfuric acid.
Excellent Tribological Properties: Low friction coefficient, high wear resistance, and self-lubrication.
Inherent Flame Retardancy: UL94 V-0 rated, low smoke emission, low toxicity.
Excellent Electrical Insulation (unless specifically formulated for conductivity).
Hydrolysis Resistance: Suitable for use in high-temperature, high-pressure steam environments.
Radiation Resistance.
Main Types
Black PEEK sheets can also be classified based on reinforcement materials, with different performance emphases:
| Type | Appearance & Characteristics | Primary Application Direction |
|---|---|---|
| Black Unfilled PEEK Sheet | Uniform matte black; retains best toughness & chemical resistance. | Chemical corrosion-resistant liners, seals, insulating parts with high weatherability requirements. |
| Black Carbon Fiber Reinforced PEEK Sheet (CF/PEEK) | Deep black with carbon fiber texture; ultra-high strength, rigidity, and wear resistance. | High-load bearings, gears, wear plates, semiconductor fixtures, robotic components. |
| Black Glass Fiber Reinforced PEEK Sheet (GF/PEEK) | Deep black; high strength and rigidity, cost-effective. | Structural supports, connectors, insulating plates. |
| Black Static Dissipative (ESD) PEEK Sheet | Controlled carbon black content maintains surface resistivity between 10⁶-10⁹ Ω/sq. | Wafer carriers, chip trays, electronic test fixtures to prevent electrostatic damage. |
Basic Performance Data Reference
Its performance is essentially consistent with the corresponding unfilled PEEK sheet. The table below shows typical parameters for Black 30% Carbon Fiber Reinforced PEEK Sheet:
| Performance Indicator | Unit | Black 30% Carbon Fiber Reinforced PEEK Sheet | Test Standard |
|---|---|---|---|
| Density | g/cm³ | 1.44 | ASTM D792 |
| Tensile Strength | MPa | 200 - 250 | ASTM D638 |
| Flexural Strength | MPa | 280 - 350 | ASTM D790 |
| Flexural Modulus | GPa | 15 - 22 | ASTM D790 |
| Heat Deflection Temp. (1.8 MPa) | °C | > 300 | ASTM D648 |
| Coefficient of Friction (vs. Steel) | - | *0.10 - 0.20 | ASTM D1894 |
| Surface Resistivity (if ESD Grade) | Ω/sq | 10⁶ - 10⁹ | ASTM D257 |
Main Application Fields
The applications of black PEEK sheet cover all fields that require PEEK's exceptional performance and have special requirements for color/functionality:
Semiconductor Manufacturing (One of the largest application areas):
Wafer Carriers/Cassettes
CMP Retaining Rings
Fixtures, brackets inside etching and CVD equipment
Cleanroom equipment components (utilizing its low outgassing, chemical cleaning resistance, and ESD properties)
Electronics & Electrical Industry:
High-performance insulating plates, connectors, coil bobbins.
Anti-static test sockets/fixtures.
Industrial Equipment:
High-performance seals, bearings, gears, piston rings, wear plates (especially where weather resistance is required).
Aerospace & Automotive:
Aircraft interior parts, engine peripheral components, automotive transmission parts (black is more dirt-resistant and aesthetically pleasing).
Optics & Precision Instruments:
Camera lens barrels, laser equipment housings, optical platform supports (utilizing its light-blocking and stability properties).
Conclusion
Black PEEK sheet is not a mere color variation but a functionalized, specialized high-performance material. While retaining all the top-tier properties of pure PEEK, the addition of carbon black significantly enhances its UV and weather resistance. It also meets the stringent demands of the semiconductor and electronics industries regarding color, cleanliness, and electrostatic control. It serves as a crucial bridge connecting PEEK's inherent superior properties with specific high-end application scenarios. It is the "Black Gold" truly born to solve cutting-edge industrial challenges.
