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Polyvinylidenechloride ( PVDC ) - Properties and Applications - Supplier Data by Goodfellow

Background

Polyvinylidenechloride ( PVDC ) is a transparent and almost colourless thermoplastic noted for its extremely low permeability to gases. As the homopolymer begins to decompose at or marginally above its melting point (200°C), all commercially available grades are copolymers (with vinyl chloride, acrylates or nitriles) and stabilisers are also normally necessary.

Key Properties

The key properties of Polyvinylidenechloride ( PVDC ) are tabulated below.

Table 1. Key properties

Chemical Resistance

 

 

 

Acids - concentrated

Good

Acids - dilute

Good

Alcohols

Good

Alkalis

Good

Aromatic hydrocarbons

Fair

Greases and Oils

Good

Halogens

Good

Ketones

Fair

Electrical Properties

 

Dielectric constant @1MHz

3.0-6.0

Surface resistivity ( Ohm/sq )

1012-1013

Volume resistivity ( Ohm.cm )

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

Flammability

Self Extinguishing

Limiting oxygen index ( % )

60

Resistance to Ultra-violet

Fair

Water absorption - over 24 hours ( % )

0.1

Thermal Properties

 

 

 

Coefficient of thermal expansion ( x10-6 K-1 )

190

Thermal conductivity ( W.m-1.K-1 )

0.13 @ 23

Upper working temperature (°C )

80-100

Properties 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 @25°C

x10-13 cm3.cm.cm-2.s-1.Pa-1

 

 0.02

Permeability to Nitrogen @25°C

x10-13 cm3.cm.cm-2.s-1.Pa-1

 

 0.0007

Permeability to Oxygen @25°C

x10-13 cm3.cm.cm-2.s-1.Pa-1

 

 0.004

Permeability to Water @25°C

x10-13 cm3.cm.cm-2.s-1.Pa-1

 

 7

Applications

The applications of Polyvinylidenechloride ( PVDC ),are predominantly packaging and barrier films, often as the barrier layer in multi-layer structures.

About Goodfellow

Goodfellow supplies metals, ceramics and other materials to meet the research, development and specialist production requirements of science and industry worldwide.

 

 

Source: Goodfellow.

 

For more information on this source please visit Goodfellow.

 

Comments

  1. Bill Pierce Bill Pierce United States says:

    Do you have any data for the UV barrier properties of PVDC?

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