Polymethylmethacrylate - Acrylic - PMMA High Impact

Sep 4 2001

Polymer Type

Thermoplastic

Advantages

Improved toughness and elongation at break and good flow properties when compared with unmodified grades.

Disadvantages

Increased haze and reduced tensile properties compared to conventional acrylic.

Typical Properties

Property

Value

Density (g/cm3)

1.11

Surface Hardness

RM25

Tensile Strength (MPa)

40

Flexural Modulus (GPa)

1.9

Notched Izod (kJ/m)

0.04

Linear Expansion  (/°C x 10-5)

10

Elongation at Break (%)

3.5

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

50

Water Absorption (%)

0.3

Oxygen Index (%)

19

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

17

Dissipation Factor 1kHz

0.03

Dielectric Constant  1kHz

2.8

HDT @ 0.45 MPa (°C)

90

HDT @ 1.80 MPa (°C)

75

Material. Drying  hrs @ (°C)

2 @ 75

Melting Temp. Range (°C)

220 - 240

Mould Shrinkage (%)

0.6

Mould Temp. Range (°C)

60 -  80

Applications

Glazing, displays and signs, moulds for display and demonstration purposes. Automotive rear light housings.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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