Polyphenylene Oxide - Modified - PPO Structural Foam

Aug 31 2001

Polymer Type

Thermoplastic

Advantages

Components with high rigidity to weight ratios possible. Thick sections are not prone to sink marks. Good flammability characteristics compared with unmodified PPO.

Disadvantages

Surface swirl patterns produced so if high quality finish is required painting is necessary. Reduced tensile strength, flexural modulus, and elongation at break, notched izod impact strength and heat distortion temperature compared with unmodified PPO.

Typical Properties

Property

Value

Density (g/cm3)

0.85

Surface Hardness

RR100

Tensile Strength (MPa)

21

Flexural Modulus (GPa)

1.8

Notched Izod (kJ/m)

0.04

Linear Expansion  (/°C x 10-5)

6

Elongation at Break (%)

20

Strain at Yield (%)

2

Max. Operating Temp. (°C)

80

Water Absorption (%)

0.1

Oxygen Index (%)

29

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

10

Dissipation Factor 1kHz

0.005

Dielectric Constant  1kHz

2.2

HDT @ 0.45 MPa (°C)

96

HDT @ 1.80 MPa (°C)

82

Material. Drying  hrs @ (°C)

2 @100

Melting Temp. Range (°C)

230 - 285

Mould Shrinkage (%)

0.8

Mould Temp. Range (°C)

70 -  85

Applications

Casings for computers and business machines. Frame and chassis material for large domestic appliances, e.g. Tumble driers, dishwashers and washing machine components. Other large mouldings such as pallets and automotive roofs.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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