Comparison
Abrasion Resistant Thermoplastic Polyurethane for Footwear vs PEEK
A side-by-side comparison of Thermoplastic Polyurethane (TPU) - Abrasion Resistant Grade for Footwear and Polyether Ether Ketone.
Physical
Density
1.18 - 1.22 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.8 - 1.2 %
0.15 %
Transparency
Opaque to Translucent
Opaque (amber)
Shrinkage
0.6 - 1.4 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.05 - 0.15 GPa
3.6 GPa
Tensile Strength
35 - 55 MPa
100 MPa
Elongation at Break
450 - 650 %
50 %
Impact Strength (Izod)
High (20-80 J/m, notched)
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-5 to 5 °C
143 °C
Melting Point
160 - 190 °C
343 °C
Continuous Service Temperature
-30 to 80 °C
260 °C
Heat Deflection Temperature
50 - 70 °C
160 °C
Electrical
Dielectric Constant
5.5 - 6.5
3.2
Volume Resistivity
10^10 - 10^12 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
18 - 26 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Resists oils and greases; swells in strong acids, ketones
Excellent
UV Resistance
Fair (can yellow)
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (thermoplastic)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg