# Plasticized (Flexible) Polyvinyl Chloride (PVC-P)

PVC-P is a thermoplastic, further classified as a polyvinyl plastic. It has a very low tensile strength and a moderately high ductility among thermoplastics. The graph bars on the material properties cards below compare PVC-P to: polyvinyl plastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

## Mechanical Properties

Elastic (Young's, Tensile) Modulus

1.4 *GPa* 0.2 *x 10 ^{6} psi*

Elongation at Break

180 *%*

Impact Strength: Notched Izod

550 *J/m* 10 *ft-lb/in*

Poisson's Ratio

0.39

Tensile Strength: Ultimate (UTS)

16 *MPa* 2.2 *x 10 ^{3} psi*

## Thermal Properties

Glass Transition Temperature

75 *°C* 170 *°F*

Maximum Temperature: Autoignition

320 *°C* 610 *°F*

Maximum Temperature: Corrosion

70 *°C* 160 *°F*

Maximum Temperature: Decomposition

250 *°C* 480 *°F*

Maximum Temperature: Mechanical

75 *°C* 170 *°F*

Melting Onset (Solidus)

190 *°C* 370 *°F*

Specific Heat Capacity

1400 *J/kg-K* 0.33 *BTU/lb-°F*

Thermal Conductivity

0.17 *W/m-K* 0.1 *BTU/h-ft-°F*

Thermal Expansion

160 *µm/m-K*

## Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz

5.8

Dielectric Strength (Breakdown Potential)

20 *kV/mm* 0.78 *V/mil*

Electrical Dissipation At 1 Hz

0.12

Electrical Resistivity Order of Magnitude

11 *10 ^{x} Ω-m*

## Otherwise Unclassified Properties

Density

1.4 *g/cm ^{3}* 85

*lb/ft*

^{3}Limiting Oxygen Index (LOI)

44 *%*

Water Absorption After 24 Hours

0.45 *%*

## Common Calculations

Stiffness to Weight: Axial

0.57 *points*

Stiffness to Weight: Bending

28 *points*

Strength to Weight: Axial

3.2 *points*

Strength to Weight: Bending

10 *points*

Thermal Diffusivity

0.090 *mm ^{2}/s*

Thermal Shock Resistance

4.9 *points*

## Followup Questions

## Further Reading

Handbook of Vinyl Formulating, 2nd ed., Richard F. Grossman (editor), 2008

SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000

Modern Plastics Handbook, Charles A. Harper (editor), 1999

Plastics Materials, 7th ed., J. A. Brydson, 1999