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RPU vs. Thermoset PI

Both RPU and thermoset PI are thermoset plastics. There are 15 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is RPU and the bottom bar is thermoset PI.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 90
2.0 to 5.9
Flexural Modulus, GPa 2.0
3.1 to 4.8
Flexural Strength, MPa 83
60 to 100
Tensile Strength: Ultimate (UTS), MPa 60
37 to 81

Thermal Properties

Maximum Temperature: Autoignition, °C 380
380
Maximum Temperature: Decomposition, °C 270
330
Specific Heat Capacity, J/kg-K 1750
1130
Thermal Conductivity, W/m-K 0.19
0.29 to 1.7
Thermal Expansion, µm/m-K 63
38 to 54

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 19
20
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
15

Otherwise Unclassified Properties

Density, g/cm3 1.2
1.4 to 1.6

Common Calculations

Strength to Weight: Axial, points 14
6.5 to 16
Strength to Weight: Bending, points 28
16 to 30
Thermal Diffusivity, mm2/s 0.090
0.18 to 0.95