Polyester - Vinyl Ester

Higher maximum operating temperature and oxygen index, and significantly lower mould shrinkage compared with rigid casting polyester.

Disadvantages

Lower flexural modulus and HDT than rigid casting polyester.

Typical Properties

Property

Value

Density   (g/cm3)

1.05

Surface Hardness

RM80

Tensile Strength (MPa)

60

Flexural Modulus (GPa)

3

Notched Izod (kJ/m)

0.02

Linear Expansion (/°C x 10-5)

7.5

Elongation at Break (%)

5

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

140

Water Absorption (%)

0.2

Oxygen Index (%)

24

Flammability UL94

V1

Volume Resistivity (log ohm.cm)

15

Dielectric Strength (MV/m)

16

Dissipation Factor1kHz

0.015

Dielectric Constant  1kHz

4.5

HDT @ 0.45 MPa (°C)

90

HDT @ 1.80 MPa (°C)

75

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

20 -  50

Mould Shrinkage (%)

0.25

Mould Temp. Range (°C)

130 - 150

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Applications

Absorption towers, process vessels, storage tanks, piping, hood scrubbers, ducts and exhaust stacks.

This information has been sourced, reviewed and adapted from materials provided by Dotmar EPP Pty Ltd.

For more information on this source, please visit Dotmar EPP Pty Ltd.

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  • The Mould Design Guide

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