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PPSU vs. Epoxy

PPSU belongs to the thermoplastics classification, while epoxy belongs to the thermoset plastics. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is PPSU and the bottom bar is epoxy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 3.6
2.4
Elongation at Break, % 26
4.5
Tensile Strength: Ultimate (UTS), MPa 95
67

Thermal Properties

Glass Transition Temperature, °C 220
120
Maximum Temperature: Autoignition, °C 580
430
Maximum Temperature: Decomposition, °C 560
430
Maximum Temperature: Mechanical, °C 160
130
Specific Heat Capacity, J/kg-K 970
1500
Thermal Conductivity, W/m-K 0.24
0.2
Thermal Expansion, µm/m-K 45
100

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 16
16
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
13

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.3
Limiting Oxygen Index (LOI), % 38
20

Common Calculations

Stiffness to Weight: Axial, points 1.4
1.0
Stiffness to Weight: Bending, points 36
34
Strength to Weight: Axial, points 19
14
Strength to Weight: Bending, points 33
28
Thermal Diffusivity, mm2/s 0.17
0.1
Thermal Shock Resistance, points 42
20