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Specialty Compounds RTP Company

Momentive Performance Materials Silopren LSR 7080J Two-component liquid silicone rubber
Categories: Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)

Material Notes: Silopren LSR 7080J liquid silicone rubber is a two-component, high-transparency, high-hardness, medium-viscosity, fast-cure speed and ultra clear liquid silicone rubber (LSR). Providing good optical clarity, Silopren LSR 7080J liquid silicone rubber combines typical LSR properties, such as high temperature stability and flow ability, with excellent UV and blue light stability. As a result, molded lenses produced using this material can exhibit excellent durability and maintain optical clarity, even if exposed to high temperatures or UV light. Due to its high flow ability, Silopren LSR 7080J liquid silicone rubber can help enable excellence in manufacturing complex and microstructure optical lenses, even in large quantities, utilizing the injection and compression molding processes.

Features: 94% transmission, <1% haze, Abbe number of approximately 50, Strong color stability, High temperature resistance even above 150 °C, UV light resistance, Micro-crack resistance.

Applications: Interior and exterior lighting - lenses and other illumination optics, Automotive lighting - lenses and light guides, Electronics - mobile phones, flash lenses, sensing lenses and other optics, Solar - secondary optics for concentrating PVs.

Information provided by Momentive Performance Materials.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 1.06 g/cc0.0383 lb/in³JIS K 6249
Water Absorption <= 0.10 %<= 0.10 %D 570
Viscosity 90000 cP90000 cPB- component. 23°C D=10/s)
 120000 cP120000 cPMixed.
 150000 cP150000 cPA- component. 23°C D=10/s)
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 8080JIS K 6249
Hardness, Shore D 3030
Tensile Strength 10.0 MPa1450 psiJIS K 6249
Elongation at Break 90 %90 %JIS K 6249
Tear Strength 7.00 kN/m40.0 pliJIS K 6249
 
Thermal PropertiesMetricEnglishComments
CTE, linear 265 µm/m-°C
@Temperature 40.0 - 90.0 °C
147 µin/in-°F
@Temperature 104 - 194 °F
Shrinkage 2.1 %2.1 %JIS K 6249
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.411.41Cured
Abbe Number 5151
Haze <= 1.0 %<= 1.0 %Cured; D 1003
Transmission, Visible  93 %
@Thickness 2.00 mm
93 %
@Thickness 0.0787 in
400 nm
 94 %
@Thickness 2.00 mm
94 %
@Thickness 0.0787 in
700 nm
 
Processing PropertiesMetricEnglishComments
Processing Temperature 130 °C
@Time 900 sec
266 °F
@Time 0.250 hour
Press Cure as Tested
Pot Life 2880 min
@Temperature 20.0 °C
2880 min
@Temperature 68.0 °F
Closed vessel
 
Descriptive Properties
AppearanceCrystal ClarityA-component
 Crystal ClarityB-component
Curing Data1.410' at 110°C T60 [min].
Mix Ratio1:1 by weight.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PMOMEN9993 / 265808

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