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Polyvinylchloride - Unplasticised ( UPVC )

Material Information

Buy Polyvinylchloride - Unplasticised on-line

We stock and supply the following standard forms:
Film Powder Rod Sheet Tube
Film Powder Rod Sheet Tube

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Common Brand Names:
Corvic, Evipol, Geon, Hostalit, Lacovyl, Lucorex
 
General Description:  

General Description : An amorphous commodity thermoplastic that can be transparent and colourless but is much more commonly pigmented. It is stiff, strong and inherently flame retardant with quite good chemical resistance (solvents are its weak area, especially stress cracking therein). It has good barrier properties and UV resistance but a limited operational temperature range, becoming brittle at 5C (unless modified) and with an upper continuous use temperature of 50C. As additive-free PVC starts to decompose before it melts, it can only be melt processed by the addition of stabilisers or the use of copolymers (or by the addition of plasticisers which results in products of different properties).

Applications include building products - eg window frames and cladding, pipes and fittings, floor tiles - bottles, film and LP records. Though PVC is widely used as cable insulation, this is normally made from plasticised grades (or sometimes from cross-linked PVC for minimum flammability).

   

Chemical Resistance

Acids - concentrated Good-Poor
Acids - dilute Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Poor
Greases and Oils Good
Halogenated Hydrocarbons Fair-Poor
Halogens Fair
Ketones Poor

Electrical Properties

Dielectric constant @1MHz 2.7-3.1
Dielectric strength ( kV mm-1 ) 14
Dissipation factor @ 1kHz 0.025
Volume resistivity ( Ohmcm ) 1016

Mechanical Properties

Elongation at break ( % ) 60
Hardness - Rockwell R106-120
Izod impact strength ( J m-1 ) 20-1000
Tensile modulus ( GPa ) 2.5-4.0
Tensile strength ( MPa ) 25-70

Physical Properties

Density ( g cm-3 ) 1.4
Flammability V0
Limiting oxygen index ( % ) 42
Radiation resistance Fair
Refractive index 1.54
Resistance to Ultra-violet Good
Water absorption - over 24 hours ( % ) 0.03-0.4

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 75-100
Heat-deflection temperature - 0.45MPa ( C ) 70
Heat-deflection temperature - 1.8MPa ( C ) 67
Lower working temperature ( C ) -30
Specific heat ( J K-1 kg-1 ) 1000-1500
Thermal conductivity @23C ( W m-1 K-1 ) 0.12-0.25
Upper working temperature ( C ) 50-75

Properties for Polyvinylchloride - Unplasticised Film

Property Value
Permeability to Carbon Dioxide @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.1
Permeability to Hydrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 1.5
Permeability to Nitrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.01
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.04
Permeability to Water @25C x10-13 cm3. cm cm-2 s-1 Pa-1 200
Permeability to Water @38C x10-13 cm3. cm cm-2 s-1 Pa-1 250

Properties for Polyvinylchloride - Unplasticised Sheet

Property Value
Permeability to Carbon Dioxide @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.12
Permeability to Hydrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 1.3
Permeability to Nitrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.009
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.034
Permeability to Water @25C x10-13 cm3. cm cm-2 s-1 Pa-1 206

Properties for Polyvinylchloride - Unplasticised Tube

Property Value
Material Biaxially oriented tube
Relative Impact Strength 2
Tensile modulus - Longitudinal GPa 3
Tensile modulus - Transverse GPa 3 - Hoop
Tensile strength - Longitudinal MPa 75
Tensile strength - Transverse MPa 75 - Hoop

Buy Polyvinylchloride - Unplasticised on-line

We stock and supply the following standard forms:
Film Powder Rod Sheet Tube
Film Powder Rod Sheet Tube

Choose a form to search our on-line catalogue  

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