LEXAN™ Resin OQ2720

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Description

Ophthalmic/safety lens market. OQ2xxx series in all transparent tints. Dedicated equipment, stringent production control conditions.

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyTemperatureValueComment

Density

23.0 °C

1.2 g/cm³

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ASTM D 792

Mechanical

PropertyTemperatureValueComment

Elongation

23.0 °C

135 %

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ASTM D 638 | Type I, 50 mm/min

Flexural modulus

23.0 °C

2.34 GPa

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ASTM D 790 | 1.3 mm/min, 50 mm span

Flexural yield strength

23.0 °C

96 MPa

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ASTM D 790 | 1.3 mm/min, 50 mm span

Impact strength, Izod notched, ASTM

23.0 °C

907 J/m

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ASTM D 256

Tensile strength

23.0 °C

68 MPa

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ASTM D 638 | Type I, 50 mm/min

Yield strength

23.0 °C

62 MPa

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ASTM D 638 | Type I, 50 mm/min

Thermal

PropertyValueComment

Heat deflection temperature, 1.80 MPa

132 °C

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ASTM D 648 | 1.82 MPa, 6.4 mm, unannealed

Optical

PropertyValueComment

Haze

0.6 %

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ASTM D 1003 | 2.54 mm

Refractive index

1.59 [-]

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ASTM D542

Transmission

89 %

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ASTM D 1003 | 2.54 mm

Rheological Properties

PropertyTemperatureValueComment

Melt mass-flow rate

7.5 g/10min

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ASTM D 1238 | 300°C/1.2 kg

Shrinkage

23.0 °C

0.5 - 0.7 %

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SABIC method | 3.2 mm

Technological properties

Property
Application areas

Electronic Components,Enclosures,Head Protection,Individual Equiptment,LED Lighting,Meter Water,Respiratory,Safety Glasses,Wireless Communications

Processing methods

Drying Temperature: 120°C, Drying Time: 3-4hrs, Drying Time (Cumulative): 48hrs, Maximum Moisture Content: 0.02%, Melt Temperature: 310-330°C, Nozzle Temperature: 305-325°C, Front - Zone 3 Temperature: 310-330°C, Middle - Zone 2 Temperature: 300-320°C, Rear - Zone 1 Temperature: 290-310°C, Mold Temperature: 80-115°C, Back Pressure: 0.3-0.7MPa, Screw Speed: 40-70rpm, Shot to Cylinder Size: 40-60%, Vent Depth: 0.025-0.076mm