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Polyvinylidenechloride ( PVDC )

Material Information

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Film Powder
Film Powder

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Common Brand Names:
Saran
 
General Description:  

General Description : A transparent and almost colorless thermoplastic noted for its extremely low permeability to gases. As the homopolymer begins to decompose at or marginally above its melting point (200C), all commercially available grades are copolymers (with vinyl chloride, acrylates or nitriles) and stabilisers are also normally necessary. Its applications are predominantly packaging and barrier films, often as the barrier layer in multi-layer structures.

   

Chemical Resistance

Acids - concentrated Good-Fair
Acids - dilute Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Fair
Greases and Oils Good
Ketones Fair

Electrical Properties

Dielectric constant @1MHz 3.0-6.0
Surface resistivity ( Ohm/sq ) 1012-1013
Volume resistivity ( Ohmcm ) 1012-1016

Mechanical Properties

Coefficient of friction 0.24
Hardness - Rockwell R98-106
Izod impact strength ( J m-1 ) 16-53
Tensile modulus ( GPa ) 0.3-0.55
Tensile strength ( MPa ) 25-110

Physical Properties

Density ( g cm-3 ) 1.63
Limiting oxygen index ( % ) 60
Radiation resistance Fair
Resistance to Ultra-violet Poor
Water absorption - over 24 hours ( % ) 0.1

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 190
Thermal conductivity @23C ( W m-1 K-1 ) 0.13
Upper working temperature ( C ) 80-100

Properties for Polyvinylidenechloride Film

Property Value
Dielectric Strength @25µm thick kV mm-1 160-280
Dissipation Factor @1MHz 0.05-0.08
Elongation at Break % 30-80
Heat-sealing Temperature C 120-150
Permeability to Carbon Dioxide @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.02
Permeability to Nitrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.001
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.004
Permeability to Water @25C x10-13 cm3. cm cm-2 s-1 Pa-1 7
Permeability to Water @38C x10-13 cm3. cm cm-2 s-1 Pa-1 25

Buy Polyvinylidenechloride on-line

We stock and supply the following standard forms:
Film Powder
Film Powder

Choose a form to search our on-line catalog  

Index