Comparison
PPO/PPE Standard vs PEEK
A side-by-side comparison of Polyphenylene Oxide / Polyphenylene Ether Standard and Polyether Ether Ketone.
Physical
Density
1.05-1.15 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.05-0.1 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
0.5-1.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
2.0-3.0 GPa
3.6 GPa
Tensile Strength
50-70 MPa
100 MPa
Elongation at Break
50-100 %
50 %
Impact Strength (Izod)
40-70 kJ/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
100-120 °C
143 °C
Melting Point
N/A (amorphous)
343 °C
Continuous Service Temperature
80-130 °C
260 °C
Heat Deflection Temperature
90-120 °C (1.8 MPa)
160 °C
Electrical
Dielectric Constant
2.5-2.8
3.2
Volume Resistivity
10^15-10^17 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
18-25 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Fair (aromatics, chlorinated hydrocarbons)
Excellent
UV Resistance
Fair
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg