Thermoset PI vs. PP Homopolymer
Thermoset PI belongs to the thermoset plastics classification, while PP homopolymer belongs to the thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is thermoset PI and the bottom bar is PP homopolymer.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 120 to 210 | |
| 45 to 64 |
| Elongation at Break, % | 2.0 to 5.9 | |
| 3.0 to 80 |
| Flexural Modulus, GPa | 3.1 to 4.8 | |
| 1.5 to 7.0 |
| Flexural Strength, MPa | 60 to 100 | |
| 41 to 100 |
| Impact Strength: Notched Izod, J/m | 21 to 43 | |
| 42 to 95 |
| Tensile Strength: Ultimate (UTS), MPa | 37 to 81 | |
| 36 to 93 |
Thermal Properties
| Glass Transition Temperature, °C | 360 | |
| 170 |
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 370 | |
| 73 to 160 |
| Maximum Temperature: Mechanical, °C | 260 | |
| 120 |
| Specific Heat Capacity, J/kg-K | 1130 | |
| 1230 to 1900 |
| Thermal Expansion, µm/m-K | 38 to 54 | |
| 30 to 90 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.6 | |
| 0.91 to 1.2 |
| Water Absorption At Saturation, % | 3.6 | |
| 0.010 to 0.090 |
Common Calculations
| Strength to Weight: Axial, points | 6.5 to 16 | |
| 11 to 21 |
| Strength to Weight: Bending, points | 16 to 30 | |
| 27 to 37 |