Comparison
All-Purpose Chloroprene Rubber (Neoprene) vs PETG
A side-by-side comparison of Chloroprene Rubber (Neoprene) and Polyethylene Terephthalate Glycol.
Physical
Density
1.23 - 1.27 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.4 - 0.8 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
1.5 - 2.5 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.02 - 0.06 GPa
2.1 GPa
Tensile Strength
10 - 25 MPa
50 MPa
Elongation at Break
200 - 600 %
120 %
Impact Strength (Izod)
N/A
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-40 to -50 °C
80 °C
Melting Point
N/A
—
Continuous Service Temperature
-30 to 100 °C
65 °C
Heat Deflection Temperature
N/A
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
6.0 - 7.0
3.3
Volume Resistivity
10^9 - 10^11 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
15 - 25 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Moderate resistance to oils and fuels; swells in aromatic and chlorinated hydrocarbons
—
UV Resistance
Good
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 %