Description
PEEK ( Ketone ) Sheet
PEEK is a semi crystalline thermoplastic with excellent mechanical and chemical resistance properties that are retained to high temperatures. The processing conditions used to mold PEEK can influence the crystallinity, and hence the mechanical properties
PEEK’s mechanical properties at elevated temperatures have led to it being used in at least two varieties of Reprap extruder as thermal insulation. This means the main mechanical structure of the extruder can be made of the same material that is being extruded, provided that the PEEK insulator prevents heat from traveling beyond the intended melt zone. A disadvantage is the high price, which limits its application to high value items.
Properties
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excellent dimensional stability
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hardly inflammable and self-extinguishing
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extremely low smoke density
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very high resistance to high-energy radiation
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outstanding sliding properties
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excellent abrasion resistance
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high wear resistance
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optimised balance of stiffness, tensile strength and impact strength
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low creep tendency
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good machinability
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good thermo formability
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good adhesive properties
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good weldability
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high dimensional stability under heat
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extremely high continuous service temperature
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low coefficient of linear thermal expansion
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good electrical insulating properties over a broad temperature range
