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Description
PEEK sheet is a high-performance engineering plastic known for its exceptional mechanical properties and temperature resistance. Ideal for demanding applications in aerospace and medical industries.
Material Properties
PEEK, or Polyetheretherketone, is a semi-crystalline thermoplastic that offers a unique combination of high mechanical strength, temperature resistance from -50°C to +250°C, and excellent chemical resistance. It is also self-extinguishing according to UL 94 VO and complies with food safety regulations.
Performance Characteristics
This material exhibits outstanding high-temperature performance, with a melting point of around 343°C. PEEK is highly resistant to thermal degradation and performs well in both organic and aqueous environments. It has a tensile strength of 90 to 100 MPa and is biocompatible.
Applications
PEEK sheet is utilized in various demanding applications, including seals, backup rings, valves, and components for the aerospace and medical industries. It is also suitable for vacuum applications and can replace metal parts in high-temperature environments.
Machining and Bonding
Machining PEEK requires an annealing process to relieve stress and prevent cracking. Silicon carbide cutting tools are recommended, and while bonding PEEK can be challenging due to its low surface energy, surface roughening can enhance adhesive strength.
Specifications
- Material: Polyetheretherketone (PEEK)
- Temperature Resistance: -50°C to +250°C
- Tensile Strength: 90 to 100 MPa
- Melting Point: Approximately 343°C
- Thickness Range: 5mm to 80mm
- Color: Natural (off-white)
- Food Compliance: Yes, FDA compliant for repeated food contact
Benefits
- Safe for food applications
- Long-lasting durability in demanding environments
- High resistance to wear and thermal degradation
- Can replace metal parts in high-temperature applications
Use Cases
- Seals
- Back up rings
- Valves
- Medical
- Aerospace
FAQ
Q: Is PEEK Sheet suitable for food applications?
A: Yes, all unfilled PEEK grades comply with FDA regulations for repeated food contact.
Q: Can PEEK Sheet be easily machined?
A: Yes, but it must be stress-relieved through an annealing process before machining to prevent cracks.
Q: What are the unique characteristics of PEEK Sheet?
A: PEEK has high radiation resistance and can absorb over 1000 units of radiation without significant loss of mechanical properties.