Polyester - SMC; High Impact

Advantages

Highest notched izod impact strength, tensile strength and elongation at break compared with other polyester SMC’s.

Disadvantages

Lowest flexural modulus, surface hardness and heat distortion temperature, highest mould shrinkage and density compared with other polyester SMC’s.

Typical Properties

Property

Value

Density  (g/cm3)

1.9

Surface Hardness

RM75

Tensile Strength (MPa)

80

Flexural Modulus (GPa)

9.5

Notched Izod (kJ/m)

1.0

Linear Expansion (/°C x 10-5)

3

Elongation at Break (%)

3.5

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

130

Water Absorption (%)

0.2

Oxygen Index (%)

22

Flammability UL94

V1

Volume Resistivity (log ohm.cm)

13

Dielectric Strength (MV/m)

12

Dissipation Factor1kHz

0.01

Dielectric Constant  1kHz

5

HDT @ 0.45 MPa (°C)

260+

HDT @ 1.80 MPa (°C)

180

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

NA

Mould Shrinkage (%)

0.2

Mould Temp. Range (°C)

135 - 145

Applications

Panel/casing type applications requiring superior impact strength.

 

Source : Abstracted from Plascams

For more information on Plascams please visit The Rubber and Plastics Research Association

 

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