Comparison
Standard DGEBA Epoxy vs PETG
A side-by-side comparison of Diglycidyl Ether of Bisphenol A (DGEBA) Epoxy Resin and Polyethylene Terephthalate Glycol.
Physical
Density
1.15-1.25 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.1-0.5 %
0.13 %
Transparency
Clear to Amber
Transparent
Shrinkage
1-2 %
0.2 – 0.5 %
Mechanical
Young's Modulus
2.5-4.0 GPa
2.1 GPa
Tensile Strength
50-85 MPa
50 MPa
Elongation at Break
3-8 %
120 %
Impact Strength (Izod)
10-25 J/m
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
60-180 °C
80 °C
Melting Point
N/A
—
Continuous Service Temperature
80-150 °C
65 °C
Heat Deflection Temperature
50-160 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.0-4.0
3.3
Volume Resistivity
10^14-10^16 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
15-25 kV/mm
—
Chemical resistance
Acids
Good resistance
Good
Bases
Moderate resistance
Fair
Solvents
Resistant to aromatics and ketones, swells in polar solvents
—
UV Resistance
Poor without additives
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 %