Polypropylene - PP Elastomer Modified

Polymer Type

Thermoplastic

Advantages

Very good impact strength even at low temperatures and large elongation at break compared with unmodified PP.

Disadvantages

Sensitive to UV degradation unless coloured black or UV stabilised. Poor stiffness poor flow properties and more expensive than unmodified PP.

Typical Properties

Property

Value

Density (g/cm3)

0.904

Surface Hardness

RR70

Tensile Strength (MPa)

23

Flexural Modulus (GPa)

0.75

Notched Izod (kJ/m)

0.5

Linear Expansion  (/°C x 10-5)

11

Elongation at Break (%)

350

Strain at Yield (%)

17

Max. Operating Temp. (°C)

90

Water Absorption (%)

0.02

Oxygen Index (%)

17

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

15

Dielectric Strength (MV/m)

28

Dissipation Factor 1kHz

0.0005

Dielectric Constant  1kHz

2.3

HDT @ 0.45 MPa (°C)

82

HDT @ 1.80 MPa (°C)

55

Material. Drying  hrs @ (°C)

NA

Melting Temp. Range (°C)

210 - 270

Mould Shrinkage (%)

2

Mould Temp. Range (°C)

20 -  60

Applications

Automotive (e.g. Battery cases, bumpers, spoilers, protective side strips, mud guards) extruded profiles. Blow moulded containers. Power tool housings.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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