Polyphenylene Oxide - Modified - PPO Fire Retardant

Aug 31 2001

Polymer Type

Thermoplastic

Advantages

Flammability characteristics (VO > 1.5) significantly better than unmodified PPO (HB). Halogen free retardant available.

Disadvantages

Slightly lower tensile strength, flexural modulus, elongation at break and heat distortion temperatures than unmodified PPO.

Typical Properties

Property

Value

Density (g/cm3)

1.09

Surface Hardness

RR116

Tensile Strength (MPa)

55

Flexural Modulus (GPa)

2.4

Notched Izod (kJ/m)

0.16

Linear Expansion  (/°C x 10-5)

6

Elongation at Break (%)

35

Strain at Yield (%)

8

Max. Operating Temp. (°C)

80

Water Absorption (%)

0.07

Oxygen Index (%)

34

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

17

Dielectric Strength (MV/m)

24

Dissipation Factor 1kHz

0.004

Dielectric Constant  1kHz

2.75

HDT @ 0.45 MPa (°C)

118

HDT @ 1.80 MPa (°C)

107

Material. Drying  hrs @ (°C)

2 @100

Melting Temp. Range (°C)

230 - 285

Mould Shrinkage (%)

0.6

Mould Temp. Range (°C)

70 -  85

Applications

The electrical industry, especially in radio and televisions, for insert card mountings and coil formers. Fuse boxes, transformers and small motor housings.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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