Comparison
Chemically Recycled PET Clear vs PEEK
A side-by-side comparison of Chemically Recycled Polyethylene Terephthalate Clear and Polyether Ether Ketone.
Physical
Density
1.38-1.40 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.1-0.3 %
0.15 %
Transparency
Excellent
Opaque (amber)
Shrinkage
1.5-2.5 %
1.1 – 1.4 %
Mechanical
Young's Modulus
2.5-3.5 GPa
3.6 GPa
Tensile Strength
50-70 MPa
100 MPa
Elongation at Break
20-50 %
50 %
Impact Strength (Izod)
5-10 J/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
70-80 °C
143 °C
Melting Point
250-260 °C
343 °C
Continuous Service Temperature
70-80 °C
260 °C
Heat Deflection Temperature
50-60 °C (0.45 MPa)
160 °C
Electrical
Dielectric Constant
3.0-3.2
3.2
Volume Resistivity
10^12-10^14 Ohm·cm
10¹⁶ Ω·cm
Dielectric Strength
15-20 kV/mm
—
Chemical resistance
Acids
Good resistance to dilute acids
Excellent
Bases
Poor resistance to strong bases
Excellent
Solvents
Resistant to most organic solvents
Excellent
UV Resistance
Moderate
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Part of a circular economy approach
Recyclable (specialty)
Recycling Code
1 (PET)
7
Carbon Footprint
Significantly reduced compared to virgin PET
~30 kg CO₂e / kg