Unplasticised Polyvinyl Chloride - Unplasticised PVC - UPVC

Polymer Type

Thermoplastic

Advantages

Cheap, good acid and alkali resistance.  Flame-retardant.  Stiff and strong.  Can be transparent.  Good vapour barrier properties.  Good UV resistance.

Disadvantages

Difficult to melt process, requires modification.  Limited solvent stress cracking resistance.  Becomes brittle at (c 5°C (40°F) ) unless impact modified.  Low continuous service temperature of 50°C (120°F).

Typical Properties

Property

Value

Density (g/cm3)

1.4

Surface Hardness

RR110

Tensile Strength (MPa)

51

Flexural Modulus (GPa)

3

Notched Izod (kJ/m)

0.08

Linear Expansion  (/°C x 10-5)

6

Elongation at Break (%)

60

Strain at Yield (%)

3.5

Max. Operating Temp. (°C)

50

Water Absorption (%)

0.1

Oxygen Index (%)

45

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

14

Dielectric Strength (MV/m)

14

Dissipation Factor 1kHz

0.025

Dielectric Constant  1kHz

3.1

HDT @ 0.45 MPa (°C)

70

HDT @ 1.80 MPa (°C)

67

Material. Drying  hrs @ (°C)

2 @ 75

Melting Temp. Range (°C)

150 - 220

Mould Shrinkage (%)

0.4

Mould Temp. Range (°C)

20 -  40

Applications

Pipe and pipefittings, building products e.g. gutters, cladding, window frames.  Bottles, film, records, floor tiling

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

Date Added: Aug 30, 2001 | Updated: Jun 11, 2013
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