PEEK Sheet (Polyetheretherketone Resin):
PEEK sheet is a high-temperature thermoplastic with a high glass transition temperature (162°C) and melting point (358°C).
The load thermal deformation temperature of PEEK sheet can reach up to 332°C (for grades reinforced with 30% glass fiber or carbon fiber).
PEEK sheets can be used continuously at 260°C, which is nearly 60°C higher than the upper limit of usage temperature compared to other high-temperature plastics such as PI, PPS, PTFE, PAI, and PPO.
PEEK resin not only has superior heat resistance compared to other high-temperature plastics but also possesses high strength, high modulus, high fracture toughness, and excellent dimensional stability.
PEEK resin retains high strength at elevated temperatures, with a flexural strength of about 24 MPa at 200°C.
The flexural and compressive strength of PEEK sheets at 260°C still reach 15-19 MPa.
PEEK resin has high rigidity, good dimensional stability, and a low coefficient of linear thermal expansion, which is very close to that of aluminum materials; it has excellent chemical resistance, being dissolved or damaged only by concentrated acids, and its corrosion resistance is comparable to nickel steel. Additionally, it has flame-retardant properties, releasing little smoke and toxic gases under flame conditions, and has strong radiation resistance.
The toughness of PEEK sheet resin is good, and its excellent fatigue resistance to alternating stress is outstanding among all plastics, comparable to alloy materials.
PEEK resin exhibits outstanding tribological properties, with excellent resistance to sliding wear and fretting wear.
PEEK sheets, especially, can maintain high wear resistance and low friction coefficient at 256°C; PEEK resin is easy to extrude and injection mold, with excellent processing performance and high molding efficiency.
In addition, PEEK also possesses excellent properties such as good self-lubrication, easy processing, stable insulation, and hydrolysis resistance. The comprehensive properties of PEEK sheets, along with good mechanical properties, high-temperature resistance, and superior chemical resistance, make it a versatile plastic.
