Views: 0 Author: Site Editor Publish Time: 2025-06-26 Origin: Site
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● 1. Material characteristics and anti-static mechanism
>> (1) Conductivity regulation
>> (2) Mechanics and Thermal Properties
>> (3) Chemical and Biological Stability
● 2. Modification process and structural design
● 3. Application Fields and Case Validation
>> (1) Semiconductor Manufacturing
● 4. Performance testing and standards
Carbon fiber reinforced anti-static PEEK (polyetheretherketone) is a high-performance engineering plastic made by composite modification of carbon fiber and PEEK resin. It combines the high temperature resistance and chemical corrosion resistance of PEEK with the reinforcement effect of carbon fiber, and achieves anti-static function through the conductive network of carbon fiber.
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Range of resistivity: By adjusting the carbon fiber content (usually 10% -40%), the surface resistivity of the material can be controlled at 10 ^ 310 ^ 5 Ω (conductive level) or 10 ^ 6-10 ^ 9 Ω (anti-static level) to meet the static dissipation requirements of different scenarios.
Formation of conductive network: The high aspect ratio of carbon fibers allows them to overlap with each other in the PEEK matrix, forming a continuous conductive path. Electrostatic charges are quickly conducted to the grounding device through this network, avoiding accumulation.
Collaborative modification: Some formulations add graphite or anti-static additives (such as quaternary ammonium salts) to reduce surface resistance through moisture absorption and enhance static dissipation stability.
Mechanical strength: PEEK reinforced with 30% carbon fiber has a tensile strength of up to 200, 300 MPa, a bending modulus exceeding 10 GPa, and a thermal deformation temperature of 316 ℃, significantly better than pure PEEK (with a tensile strength of about 100 MPa without reinforcement).
Temperature resistance: The long-term use temperature is 260 ℃, and the short-term temperature resistance is above 300 ℃. The addition of carbon fiber inhibits the thermal softening of PEEK, resulting in a higher strength retention rate at high temperatures.
Wear resistance: The friction coefficient can be as low as 0.150.28 (even lower when blended with PTFE), and the wear rate is only 1/5 of that of fiberglass reinforced PEEK, making it suitable for high load sliding parts.
Corrosion resistance: Except for concentrated sulfuric acid, it can withstand most acids, bases, organic solvents, and high-pressure steam, making it suitable for semiconductor wet process equipment.
Biocompatibility: Passed ISO 10993 biosafety certification, elastic modulus (34GPa) close to human bones, can be used for orthopedic implants
(1) Material Composite Technology
Fiber pretreatment: Carbon fibers need to undergo surface oxidation or coating treatment to improve the interfacial bonding with PEEK and avoid fiber aggregation during processing.
Melt blending: Using a twin-screw extruder to melt blend at 370390 ℃ to ensure uniform dispersion of carbon fibers; During injection molding, the mold temperature should be maintained at 140-180 ℃ to reduce internal stress.
Multi component synergy: such as PEEKHPV model (containing carbon fiber, PTFE, graphite) to further optimize self-lubricating and conductivity.
(2) Anti static structure design
Grounding integration: Metal grounding terminals are embedded in semiconductor equipment components (such as wafer suction cups), and the conductive network is connected to the ground through low resistance lines.
Surface treatment: Polish or apply anti-static coatings (such as polythiophene derivatives) to reduce surface resistance to 10 ^ 6-10 ^ 8 Ω, while reducing frictional electrification.
Vacuum suction cup: The American company uses 30% carbon fiber reinforced PEEK to manufacture wafer handling suction cups, with a surface resistance of 10 ^ 4-106 Ω, to avoid electrostatic breakdown of sensitive circuits.
Reaction chamber components: resistant to plasma corrosion and with an electrostatic decay time of less than 2 seconds, ensuring the stability of the etching process.
Lightweight components: Airbus A350 door control accessories use carbon fiber PEEK instead of metal, reducing weight by 40% and improving moisture resistance.
Engine components: The Boeing 757 fairing is made of this material, which is resistant to oil mist and has a long-term operating temperature of up to 200 ℃.
Orthopedic implants: The CF30 reinforced PEEK acetabular prosthesis developed by Solvay has a 70% lower wear rate than ultra-high molecular weight polyethylene and no risk of metal ion release.
Surgical instruments: can withstand repeated sterilization with high-pressure steam at 134 ℃ for 3000 times, with a size change of less than 0.1%.
Braking system: Bosch uses carbon fiber PEEK instead of metal ABS components to reduce inertia and improve response speed.
Sensor housing: resistant to fuel corrosion and electrostatic shielding, used for high-voltage systems in electric vehicles.
Surface resistance test: According to ANSI/ESD S20.20, measure with a high resistance meter in an environment of 23 ± 2 ℃ and 50 ± 5% RH, with a qualified range of 106-1012 Ω.
Friction voltage test: Simulate actual working conditions, requiring<100V (ASTM D257).
Accelerated aging experiment: After 1000 hours of thermal aging at 260 ℃, the mechanical properties decreased by less than 10%, verifying long-term reliability.
conclusion
Carbon fiber reinforced anti-static PEEK has achieved synergistic optimization of mechanical, thermal, and conductive properties through multi-scale structural design and strict process control, becoming an irreplaceable material in the high-end industrial field. The future development direction includes low-cost preparation, intelligent conductive network design, and interdisciplinary application expansion (such as humanoid robot joint components).