Ionomer
Ionomer is a thermoplastic, further classified as an ethylene copolymer. It has a fairly high ductility among thermoplastics. In addition, it has a fairly low density and a moderately low tensile strength. The graph bars on the material properties cards below compare ionomer to: ethylene copolymers (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
0.4 GPa 0.058 x 106 psi
Elongation at Break
350 %
Tensile Strength: Ultimate (UTS)
37 MPa 5.4 x 103 psi
Thermal Properties
Maximum Temperature: Mechanical
75 °C 170 °F
Melting Onset (Solidus)
94 °C 200 °F
Vicat Softening Temperature
72 °C 160 °F
Other Material Properties
Density
0.94 g/cm3 59 lb/ft3
Dielectric Constant (Relative Permittivity) At 1 Hz
2.4
Dielectric Strength (Breakdown Potential)
39 kV/mm 1.5 V/mil
Common Calculations
Stiffness to Weight: Axial
0.24 points
Stiffness to Weight: Bending
26 points
Strength to Weight: Axial
11 points
Strength to Weight: Bending
26 points
Followup Questions
Further Reading
SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000
Modern Plastics Handbook, Charles A. Harper (editor), 1999
Plastics Materials, 7th ed., J. A. Brydson, 1999