Polypropylene - PP Homopolymer UV Stabilised

Sep 6 2001

Polymer Type

Thermoplastic

Advantages

Good sun light/UV and weathering resistance compared with unmodified PP homopolmer. Available in coloured formulations.

Disadvantages

UV stabiliser effectiveness can be seriously impaired by other additives and pigments. Special grades required for food contact applications. Slightly reduced tensile strength and notched izod impact strength compared with unmodifed PP homopolymer.

Typical Properties

Property

Value

Density (g/cm3)

0.908

Surface Hardness

RD72

Tensile Strength (MPa)

32

Flexural Modulus (GPa)

1.5

Notched Izod (kJ/m)

0.04

Linear Expansion  (/°C x 10-5)

10

Elongation at Break (%)

150

Strain at Yield (%)

8

Max. Operating Temp. (°C)

100

Water Absorption (%)

0.02

Oxygen Index (%)

17

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

28

Dissipation Factor 1kHz

0.0001

Dielectric Constant  1kHz

2.3

HDT @ 0.45 MPa (°C)

110

HDT @ 1.80 MPa (°C)

57

Material. Drying  hrs @ (°C)

NA

Melting Temp. Range (°C)

210 - 290

Mould Shrinkage (%)

1.5

Mould Temp. Range (°C)

20 -  60

Applications

Pipes, hoses, electric cable casing, plastic sacks.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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