Polyphenylene Oxide - Modified - PPO

Polymer Type

Thermoplastic

Advantages

Reasonably high HDT (129°C/260°F) and continuous use temperature (80°C/180°F). Flame-retardant grades available. Low mould shrinkage. Good resistance to hydrolysis.

Disadvantages

Poor resistance to solvents. Poor fatigue resistance. Relatively expensive.

Typical Properties

Property

Value

Density (g/cm3)

1.06

Surface Hardness

RR119

Tensile Strength (MPa)

65

Flexural Modulus (GPa)

2.5

Notched Izod (kJ/m)

0.16

Linear Expansion  (/°C x 10-5)

6

Elongation at Break (%)

60

Strain at Yield (%)

4.5

Max. Operating Temp. (°C)

80

Water Absorption (%)

0.07

Oxygen Index (%)

20

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

17

Dielectric Strength (MV/m)

21

Dissipation Factor 1kHz

0.0004

Dielectric Constant  1kHz

2.6

HDT @ 0.45 MPa (°C)

137

HDT @ 1.80 MPa (°C)

129

Material. Drying  hrs @ (°C)

2 @100

Melting Temp. Range (°C)

250 - 300

Mould Shrinkage (%)

0.6

Mould Temp. Range (°C)

30 - 110

Applications

Electrical fittings, TV components, washing machine and dish- washer components, car fascia panels, calculator cases and VDU housings (particularly structural foam).

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

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