1. Basic Concepts of PEEK

PEEK plastic injection molding

  • PEEK, AKA Poly-ether-ether-ketone, is a special engineering plastic that possesses high thermal stability and a high mechanical performance.
  • The main chain is a high molecular polymer formed by alternation of an ether bond and a ketone bond, of which the typical polymer is polyaryletherketone. The unit structure is as shown below.

PEEK(polyetheretherketone)

2. The Property Index of PEEK

Physical IndexSpecific Gravity1.6g/cc
Water Absorption0.021%
Mechanical PropertiesRockwell Hardness (R)105
Shore Hardness (D)75
Yield Point Elongation3%
Tensile Strength110MPa
Tensile Modulus8GPa
Bending Strength55MPa
Bending Modulus6.4GPa
Notched Izod Impact Strength (23℃)1.12J/cm
Abrasion Resistance (1.5kg)＞8000 Times
Electrical PropertiesArc Resistance60-120SEC
Comparative Tracking Index600V
Thermal PropertiesMelting Temperature360℃
Relative Temperature Index260℃
Heat Deflection Temperature200℃ (1.8MPa), 210℃ (0.46MPa)
Vicat Softening Temperature210℃
Flame RetardanceVO
Oxygen Index30%
Molding PropertiesMolding Temperature360-500℃
MoldabilityExcellent dimensional stability after water absorption, low thermal expansion coefficient and great fluidity. Able to be used for production of tubes, rods and films by means of injection molding, extrusion molding and pressing.
Thermal PropertiesMelting Temperature360℃
Relative Temperature Index260℃
Heat Deflection Temperature200℃ (1.8MPa), 210℃ (0.46MPa)
Vicat Softening Temperature210℃
Flame RetardanceVO
Oxygen Index30%
Molding PropertiesMolding Temperature360-500℃
MoldabilityExcellent dimensional stability after water absorption, low thermal expansion coefficient and great fluidity. Able to be used for production of tubes, rods and films by means of injection molding, extrusion molding and pressing.

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