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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