Ethylene Vinyl Acetate - EVA 25% VA

May 9 2001

Polymer Type

Thermoplastic

Advantages

Greater heat seal strength, flexibility and low temperature performance than EVA containing 12% VA.

Disadvantages

Lower tensile strength, resistance to heat deformation and chemical resistance than EVA containing 12% co-monomer. Also higher permeability.

Typical Properties

Property

Value

Density (g/cm3)

0.95

Surface Hardness

SA85

Tensile Strength (MPa)

17

Flexural Modulus (GPa)

0.02

Notched Izod (kJ/m)

1.06+

Linear Expansion  (/°C x 10-5)

18

Elongation at Break (%)

750

Strain at Yield (%)

N/Y

Max. Operating Temp. (°C)

50

Water Absorption (%)

0.1

Oxygen Index (%)

19

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

27

Dissipation Factor 1kHz

0.02

Dielectric Constant  1kHz

2.9

HDT @ 0.45 MPa (°C)

20-

HDT @ 1.80 MPa (°C)

20-

Material. Drying  hrs @ (°C)

NA

Melting Temp. Range (°C)

140 - 200

Mould Shrinkage (%)

2

Mould Temp. Range (°C)

20 -  40

Applications

Food packaging, cable coating, flexible panels, instrument legs, bellows, parts for circuit breakers, rail pads, O-rings, buffers and seals.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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