Polyester - DMC

Advantages

Highest notched impact strength, lowest cost and good elongation at break compared with other polyester DMC’s.

Disadvantages

Lower mechanical strength than SMC’s, also lower flexural modulus.

Typical Properties

Property

Value

Density  (g/cm3)

1.8

Surface Hardness

RM100

Tensile Strength (MPa)

40

Flexural Modulus (GPa)

9

Notched Izod (kJ/m)

0.5

Linear Expansion (/°C x 10-5)

2.5

Elongation at Break (%)

2

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

130

Water Absorption (%)

0.25

Oxygen Index (%)

22

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

14

Dielectric Strength (MV/m)

15

Dissipation Factor1kHz

0.01

Dielectric Constant  1kHz

5

HDT @ 0.45 MPa (°C)

260+

HDT @ 1.80 MPa (°C)

210

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

20 -  60

Mould Shrinkage (%)

0.25

Mould Temp. Range (°C)

120 - 160

Applications

Mouldings for automotive use, small cabinets for meters, electrical devices etc.

 

Source : Abstracted from Plascams

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

 

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