MakeItFrom.com
Menu (ESC)

Polyphenylene Ether (PPE)

PPE is a thermoplastic, further classified as a polyphenylene plastic. The graph bars on the material properties cards below compare PPE to: polyphenylene plastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

2.3 GPa 0.33 x 106 psi

Elongation at Break

30 %

Flexural Strength

75 MPa 11 x 103 psi

Tensile Strength: Ultimate (UTS)

55 MPa 8.0 x 103 psi

Thermal Properties

Glass Transition Temperature

85 °C 190 °F

Heat Deflection Temperature At 1.82 MPa (264 psi)

120 °C 240 °F

Maximum Temperature: Autoignition

430 °C 800 °F

Maximum Temperature: Mechanical

90 °C 190 °F

Melting Onset (Solidus)

260 °C 500 °F

Specific Heat Capacity

1200 J/kg-K 0.29 BTU/lb-°F

Thermal Conductivity

0.22 W/m-K 0.13 BTU/h-ft-°F

Thermal Expansion

90 µm/m-K

Vicat Softening Temperature

140 °C 280 °F

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz

2.7

Dielectric Strength (Breakdown Potential)

19 kV/mm 0.74 V/mil

Electrical Resistivity Order of Magnitude

13 10x Ω-m

Otherwise Unclassified Properties

Density

1.1 g/cm3 66 lb/ft3

Water Absorption After 24 Hours

0.23 %

Common Calculations

Stiffness to Weight: Axial

1.2 points

Stiffness to Weight: Bending

42 points

Strength to Weight: Axial

14 points

Strength to Weight: Bending

30 points

Thermal Diffusivity

0.17 mm2/s

Thermal Shock Resistance

19 points

Followup Questions

Further Reading

SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000

Modern Plastics Handbook, Charles A. Harper (editor), 1999

Plastics Materials, 7th ed., J. A. Brydson, 1999