Comparison
Bio-PE High Density vs PEEK
A side-by-side comparison of Bio-based Polyethylene, High Density and Polyether Ether Ketone.
Physical
Density
0.941-0.965 g/cm³
1.32 g/cm³
Water Absorption (24h)
< 0.01 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
2.0 - 5.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.8-1.5 GPa
3.6 GPa
Tensile Strength
18-30 MPa
100 MPa
Elongation at Break
500-800 %
50 %
Impact Strength (Izod)
2.0-5.0 J/cm
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-120 °C
143 °C
Melting Point
120-135 °C
343 °C
Continuous Service Temperature
70 °C
260 °C
Heat Deflection Temperature
40 °C
160 °C
Electrical
Dielectric Constant
2.3
3.2
Volume Resistivity
> 10¹⁵ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
25 kV/mm
—
Chemical resistance
Acids
Excellent resistance
Excellent
Bases
Excellent resistance
Excellent
Solvents
Resistant to most organic solvents at room temperature
Excellent
UV Resistance
Moderate (requires additive)
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (same as fossil-based HDPE)
Recyclable (specialty)
Recycling Code
2 (HDPE)
7
Carbon Footprint
Significantly lower due to renewable source
~30 kg CO₂e / kg