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Formula: PEKK
Form: Granule
Material: Polyetherketoneketone (PEKK)
CAS Number: 29658-26-2
Commodity: Polymers
Nominal Granule Size: 3mm
Structure: Semi Crystalline
Viscosity: Medium Viscosity
Color: Natural
PEKK Granules offer high thermal stability, excellent chemical resistance, and superior mechanical performance, making them an ideal feedstock for injection molding, extrusion, and additive manufacturing of advanced components. With a tunable crystallinity and high glass transition temperature, polyetherketoneketone provides long-term performance in aerospace, oil and gas, and medical device applications. Industries use PEKK granules to produce high-strength parts for aircraft interiors, chemically resistant components for subsea equipment, and sterilizable surgical tools. Specific applications include flame-retardant structural panels, wear-resistant pump components, and implant-grade medical devices. In research, PEKK granules are employed to investigate high-performance polymer processing, long-term environmental durability, and composite reinforcement integration. Their combination of processing versatility, extreme-environment durability, and structural integrity makes them a preferred material for demanding industrial and scientific challenges.
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Material Properties for Polymers

Mechanical Properties
Element Value
Coefficient of friction 0.26
Hardness - Rockwell M88
Elongation at break( % ) 12
Tensile modulus( GPa ) 4.5
Izod impact strength( J m⁻¹ ) 69
Tensile strength( MPa ) 110
Electrical Properties
Element Value
Dielectric constant @1kHz 3.3
Dissipation factor @ 1kHz 0.004
Dielectric strength( kV mm⁻¹ ) 23.6
Surface resistivity( Ohm/sq ) 2x10¹⁶
Volume resistivity( Ohmcm ) 10¹⁶
Physical Properties
Element Value
Flammability V-0
Radiation resistance Good
Water absorption - over 24 hours( % ) 0.2
Density( gcm⁻³ ) 1.31
Thermal Properties
Element Value
Heat-deflection temperature - 1.8MPa( C ) 175
Upper working temperature( C ) 260
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.25
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 38
Pultrusions
Element Value
Compressive strength( MPa ) 206

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