Comparison
rPP Homo PCR Black vs PEEK
A side-by-side comparison of Recycled Polypropylene Homopolymer Post-Consumer Recycled Black and Polyether Ether Ketone.
Physical
Density
0.900-0.915 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.02-0.05 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
1.5-3.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
1.3-1.7 GPa
3.6 GPa
Tensile Strength
30-45 MPa
100 MPa
Elongation at Break
5-20 %
50 %
Impact Strength (Izod)
20-40 J/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-5 °C
143 °C
Melting Point
160-170 °C
343 °C
Continuous Service Temperature
80-100 °C
260 °C
Heat Deflection Temperature
60-80 °C (0.45 MPa)
160 °C
Electrical
Dielectric Constant
2.2-2.3
3.2
Volume Resistivity
>10^16 Ohm·cm
10¹⁶ Ω·cm
Dielectric Strength
20-30 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Good resistance to many organic solvents
Excellent
UV Resistance
Poor (requires UV stabilizers)
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Highly Recyclable
Recyclable (specialty)
Recycling Code
5 (PP)
7
Carbon Footprint
Lower than virgin PP homopolymer
~30 kg CO₂e / kg