Comparison
Cycloaliphatic Epoxy for Electrical vs PETG
A side-by-side comparison of Cycloaliphatic Epoxy Resin and Polyethylene Terephthalate Glycol.
Physical
Density
1.10-1.20 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.1-0.4 %
0.13 %
Transparency
Water Clear to Light Yellow
Transparent
Shrinkage
1.5-2.5 %
0.2 – 0.5 %
Mechanical
Young's Modulus
2.0-3.0 GPa
2.1 GPa
Tensile Strength
40-60 MPa
50 MPa
Elongation at Break
5-10 %
120 %
Impact Strength (Izod)
15-30 J/m
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
40-100 °C
80 °C
Melting Point
N/A
—
Continuous Service Temperature
60-120 °C
65 °C
Heat Deflection Temperature
40-80 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.0-3.5
3.3
Volume Resistivity
10^13-10^15 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
20-30 kV/mm
—
Chemical resistance
Acids
Good resistance
Good
Bases
Good resistance
Fair
Solvents
Resistant to most common solvents
—
UV Resistance
Excellent
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Difficult
Recyclable
Recycling Code
N/A
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %