Comparison
Ionomer Surlyn Packaging vs PA66
A side-by-side comparison of Ionomer (Surlyn) for High-Performance Packaging and Polyamide 6,6 (Nylon).
Physical
Density
0.935-0.950 g/cm³
1.14 g/cm³
Water Absorption (24h)
<0.5 %
1.2 %
Transparency
Good to Excellent
Opaque
Shrinkage
2-4 %
1.5 – 2.0 %
Mechanical
Young's Modulus
0.2-0.5 GPa
3.0 GPa (dry)
Tensile Strength
20-35 MPa
80 MPa
Elongation at Break
300-600 %
60 %
Impact Strength (Izod)
Excellent
50 J/m
Flexural Strength
—
110 MPa
Thermal
Glass Transition Temperature
-80 to -60 °C
70 °C
Melting Point
90-105 °C
255 – 265 °C
Continuous Service Temperature
50-60 °C
100 – 120 °C
Heat Deflection Temperature
30-40 °C
75 °C (unfilled)
Electrical
Dielectric Constant
2.3-2.5
4.0
Volume Resistivity
>10¹⁴ Ω⋅cm
10¹² Ω·cm
Dielectric Strength
20-30 kV/mm
—
Chemical resistance
Acids
Good resistance
Poor
Bases
Good resistance
Good
Solvents
Good resistance at room temp, swells in hot aromatic and chlorinated hydrocarbons
—
UV Resistance
Poor (requires stabilization)
Fair
Alcohols
—
Good
Oils & Fuels
—
Excellent
Sustainability
Recyclability
Recyclable (often as part of multilayer)
Recyclable
Recycling Code
4 (PE-LD or PE-LLD)
7
Carbon Footprint
Moderate
~7.4 kg CO₂e / kg
Bio-based Content
—
0 – 100 % (bio grades)