Etherester Amide Based Thermoplastic Elastomer - EEA TPE 40D

May 7 2001

Consisting of materials having both thermoplastic and elastomeric properties, thermoplastic elastomers (TPE) are a polymer blend of, typically, a plastic and rubber. Therefore due to their thermoplastic characteristic, through processes such as injection moulding, TPEs are generally easier to manufacture when compared to elastomers (which are thermosets). TPEs tend to show advantages that are characteristic of both rubbery and plastic materials. Thermoset elastomers and TPEs differ by the type of crosslinking bond which exists within their structures. This particular structural feature is what gives rise to elastomers' high elastic properties.

Polymer Type

Thermoplastic

Advantages

  • Higher tensile strength and flexural modulus than EEA TPE 70A.

Disadvantages

  • Lower tensile strength flexural modulus than EEA TPE 63D.

  • Lower elongation at break than EEA TPE 70A.

Typical Properties

Property

Value

Density (g/cm3)

1.01

Surface Hardness

SD40

Tensile Strength (MPa)

33

Flexural Modulus (GPa)

0.1

Notched Izod (kJ/m)

1.06+

Linear Expansion  (/°C x 10-5)

22

Elongation at Break (%)

620

Strain at Yield (%)

40

Max. Operating Temp. (°C)

65

Water Absorption (%)

1.2

Oxygen Index (%)

18

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

10

Dielectric Strength (MV/m)

14

Dissipation Factor 1kHz

0.2

Dielectric Constant  1kHz

5

HDT @ 0.45 MPa (°C)

30

HDT @ 1.80 MPa (°C)

20

Material. Drying  hrs @ (°C)

4 @ 90

Melting Temp. Range (°C)

220 - 240

Mould Shrinkage (%)

1.4

Mould Temp. Range (°C)

30 -  50

Applications

  • Rotational moulding grade, balls, etc.

  • Extrusion of tubes, pipes, profiles and film, cable jackets.

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

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