Comparison

Carbon Fiber PPS vs PEEK

A side-by-side comparison of Polyphenylene Sulfide, Carbon Fiber Reinforced and Polyether Ether Ketone.

Property

Carbon Fiber PPS

PEEK

Physical

Density

1.55-1.70 g/cm³

1.32 g/cm³

Water Absorption (24h)

0.01-0.05 %

0.15 %

Transparency

Opaque

Opaque (amber)

Shrinkage

0.1-0.3 %

1.1 – 1.4 %

Mechanical

Young's Modulus

18-25 GPa

3.6 GPa

Tensile Strength

120-150 MPa

100 MPa

Elongation at Break

1-3 %

50 %

Impact Strength (Izod)

5-10 kJ/m

55 J/m

Flexural Strength

—

170 MPa

Thermal

Glass Transition Temperature

100-120 °C

143 °C

Melting Point

275-285 °C

343 °C

Continuous Service Temperature

200-240 °C

260 °C

Heat Deflection Temperature

260-280 °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

Excellent

Bases

Excellent

Solvents

Excellent

UV Resistance

Good

Fair

Hydrolysis (steam)

—

Excellent

Sustainability

Recyclability

Recyclable (difficult)

Recyclable (specialty)

Recycling Code

7 (Other)

Carbon Footprint

High

~30 kg CO₂e / kg