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PPE vs. DAP

PPE belongs to the thermoplastics classification, while DAP belongs to the thermoset plastics. There are 18 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is PPE and the bottom bar is DAP.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
13
Elongation at Break, % 30
31
Flexural Strength, MPa 75
62
Tensile Strength: Ultimate (UTS), MPa 55
28

Thermal Properties

Glass Transition Temperature, °C 85
150
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
160
Specific Heat Capacity, J/kg-K 1200
1450
Thermal Conductivity, W/m-K 0.22
0.6
Thermal Expansion, µm/m-K 90
25

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 19
40
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
13

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.7

Common Calculations

Stiffness to Weight: Axial, points 1.2
4.1
Stiffness to Weight: Bending, points 42
46
Strength to Weight: Axial, points 14
4.5
Strength to Weight: Bending, points 30
12
Thermal Diffusivity, mm2/s 0.17
0.24
Thermal Shock Resistance, points 19
6.3