Epoxy Laminate; Kevlar Prepreg

Aug 16 2001

Advantages

Best notched izod impact strength and lowest density. Low shrinkage, good tensile strength, flexural modulus and elongation at break compared with other epoxy laminates.

Disadvantages

Very expensive and low heat distortion temperature compared with other epoxy laminates.

Typical Properties

Property

Value

Density  (g/cm3)

1.33

Surface Hardness

RM112

Tensile Strength (MPa)

500

Flexural Modulus (GPa)

25

Notched Izod (kJ/m)

1.0

Linear Expansion (/°C x 10-5)

1

Elongation at Break (%)

1.7

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

130

Water Absorption (%)

0.2

Oxygen Index (%)

28

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

15

Dielectric Strength (MV/m)

18

Dissipation Factor1kHz

0.1

Dielectric Constant  1kHz

3.5

HDT @ 0.45 MPa (°C)

260+

HDT @ 1.80 MPa (°C)

210

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

NA

Mould Shrinkage (%)

NA

Mould Temp. Range (°C)

NA

Applications

Aerospace applications, especially structural components, chemical engineering plant, pressure vessels and safety helmets.

 

Source : Abstracted from Plascams

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

 

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