Comparison
Carbon Fiber PPA vs PEEK
A side-by-side comparison of Polyphthalamide, Carbon Fiber Reinforced and Polyether Ether Ketone.
Physical
Density
1.25-1.35 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.4-0.6 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
0.2-0.4 %
1.1 – 1.4 %
Mechanical
Young's Modulus
15-25 GPa
3.6 GPa
Tensile Strength
120-180 MPa
100 MPa
Elongation at Break
3-7 %
50 %
Impact Strength (Izod)
8-15 kJ/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
100-150 °C
143 °C
Melting Point
300-320 °C
343 °C
Continuous Service Temperature
120-170 °C
260 °C
Heat Deflection Temperature
250-290 °C (1.8 MPa)
160 °C
Electrical
Dielectric Constant
N/A (conductive)
3.2
Volume Resistivity
10^2-10^5 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
Low (conductive)
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Good
Excellent
UV Resistance
Fair
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (complex)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
High
~30 kg CO₂e / kg