Comparison
rTPU Flexible Black vs PEEK
A side-by-side comparison of Recycled Thermoplastic Polyurethane Flexible Black and Polyether Ether Ketone.
Physical
Density
1.10-1.30 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.5-1.5 %
0.15 %
Transparency
Opaque (typically black)
Opaque (amber)
Shrinkage
0.5-1.5 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.02-0.10 GPa
3.6 GPa
Tensile Strength
30-60 MPa
100 MPa
Elongation at Break
300-600 %
50 %
Impact Strength (Izod)
N/A (flexible grade)
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-30 to -10 °C
143 °C
Melting Point
N/A (elastomeric)
343 °C
Continuous Service Temperature
70-90 °C
260 °C
Heat Deflection Temperature
N/A
160 °C
Electrical
Dielectric Constant
4.0-5.0
3.2
Volume Resistivity
10^10-10^12 Ohm·cm
10¹⁶ Ω·cm
Dielectric Strength
10-20 kV/mm
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Resistance varies, attacked by strong polar solvents
Excellent
UV Resistance
Fair (can degrade over time)
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (check local facilities)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Lower than virgin TPU
~30 kg CO₂e / kg