Comparison

Carbon Fiber PPA vs PETG

A side-by-side comparison of Polyphthalamide, Carbon Fiber Reinforced and Polyethylene Terephthalate Glycol.

Physical

Density
1.25-1.35 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.4-0.6 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
0.2-0.4 %
0.2 – 0.5 %

Mechanical

Young's Modulus
15-25 GPa
2.1 GPa
Tensile Strength
120-180 MPa
50 MPa
Elongation at Break
3-7 %
120 %
Impact Strength (Izod)
8-15 kJ/m
100 J/m
Flexural Strength
70 MPa

Thermal

Glass Transition Temperature
100-150 °C
80 °C
Melting Point
300-320 °C
Continuous Service Temperature
120-170 °C
65 °C
Heat Deflection Temperature
250-290 °C (1.8 MPa)
70 °C
CTE
68 × 10⁻⁶ /K

Electrical

Dielectric Constant
N/A (conductive)
3.3
Volume Resistivity
10^2-10^5 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
Low (conductive)

Chemical resistance

Acids
Good
Good
Bases
Good
Fair
Solvents
Good
UV Resistance
Fair
Fair
Alcohols
Good
Oils
Good

Sustainability

Recyclability
Recyclable (complex)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
High
~2.7 kg CO₂e / kg
Bio-based Content
0 %