Comparison
Chemical Resistant Vinyl Ester vs PEEK
A side-by-side comparison of Vinyl Ester Resin and Polyether Ether Ketone.
Physical
Density
1.10-1.25 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.1-0.4 %
0.15 %
Transparency
Clear to Light Amber
Opaque (amber)
Shrinkage
5-8 %
1.1 – 1.4 %
Mechanical
Young's Modulus
2.5-3.8 GPa
3.6 GPa
Tensile Strength
50-80 MPa
100 MPa
Elongation at Break
2-5 %
50 %
Impact Strength (Izod)
15-30 J/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
80-120 °C
143 °C
Melting Point
N/A
343 °C
Continuous Service Temperature
80-130 °C
260 °C
Heat Deflection Temperature
70-110 °C
160 °C
Electrical
Dielectric Constant
3.5-4.5
3.2
Volume Resistivity
10^13-10^15 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
18-26 kV/mm
—
Chemical resistance
Acids
Excellent resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Excellent resistance to many organic solvents
Excellent
UV Resistance
Moderate without additives
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Difficult
Recyclable (specialty)
Recycling Code
N/A
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg