MakeItFrom.com
Menu (ESC)

PPE vs. PBI

PPE belongs to the thermoplastics classification, while PBI belongs to the thermoset plastics. There are 21 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 PPE and the bottom bar is PBI.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
5.9
Elongation at Break, % 30
3.0
Flexural Strength, MPa 75
220
Tensile Strength: Ultimate (UTS), MPa 55
160

Thermal Properties

Glass Transition Temperature, °C 85
410
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
430
Maximum Temperature: Mechanical, °C 90
340
Specific Heat Capacity, J/kg-K 1200
930
Thermal Conductivity, W/m-K 0.22
0.41
Thermal Expansion, µm/m-K 90
23

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 2.7
3.8
Dielectric Strength (Breakdown Potential), kV/mm 19
23
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
13

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.3
Water Absorption After 24 Hours, % 0.23
0.4

Common Calculations

Stiffness to Weight: Axial, points 1.2
2.5
Stiffness to Weight: Bending, points 42
46
Strength to Weight: Axial, points 14
34
Strength to Weight: Bending, points 30
50
Thermal Diffusivity, mm2/s 0.17
0.34
Thermal Shock Resistance, points 19
84