Comparison
Weather-Resistant Ethylene Propylene Diene Monomer vs PETG
A side-by-side comparison of Ethylene Propylene Diene Monomer (Weather-Resistant) and Polyethylene Terephthalate Glycol.
Physical
Density
0.86 - 0.93 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.1 - 0.4 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
1.0 - 2.0 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.01 - 0.04 GPa
2.1 GPa
Tensile Strength
5 - 20 MPa
50 MPa
Elongation at Break
300 - 700 %
120 %
Impact Strength (Izod)
N/A
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-50 to -60 °C
80 °C
Melting Point
N/A
—
Continuous Service Temperature
-50 to 150 °C
65 °C
Heat Deflection Temperature
N/A
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
2.3 - 3.0
3.3
Volume Resistivity
10^13 - 10^15 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
20 - 30 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Good resistance to polar solvents, water, steam; Poor resistance to hydrocarbons
—
UV Resistance
Excellent
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Limited
Recyclable
Recycling Code
N/A
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %