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PS vs. PMQ Rubber

PS belongs to the thermoplastics classification, while PMQ rubber belongs to the thermoset elastomers (rubber). There are 13 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is PS and the bottom bar is PMQ rubber.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 1.8 to 40
480
Tensile Strength: Ultimate (UTS), MPa 32 to 44
8.0

Thermal Properties

Glass Transition Temperature, °C 100
-130
Maximum Temperature: Autoignition, °C 360 to 420
410
Maximum Temperature: Decomposition, °C 320 to 330
460
Maximum Temperature: Mechanical, °C 70
220
Specific Heat Capacity, J/kg-K 1250 to 1400
1590
Thermal Conductivity, W/m-K 0.14 to 0.22
0.23

Otherwise Unclassified Properties

Density, g/cm3 1.0
1.2
Limiting Oxygen Index (LOI), % 18
32

Common Calculations

Strength to Weight: Axial, points 8.5 to 12
1.9
Strength to Weight: Bending, points 22 to 26
7.4
Thermal Diffusivity, mm2/s 0.11 to 0.15
0.12