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Dow DOWSIL™ MS-4007 Optical Grade Moldable Silicone
Categories: Polymer; Thermoset; Silicone

Material Notes: LED lighting grade. DOWSIL™ silicone optical resins help increase design freedom and energy efficiency from high-performance buildings to outdoor-area illumination to advanced automotive styling. Compared to organic options, these specialty silicone liquid resins can maintain outstanding optical properties without yellowing with age under high temperatures.

Product applications:

  • Secondary optics such as lens clusters, light guides, light pipes and free-form collimators
Key Features:
  • High light transmittance with low light attenuation coefficient
  • Lighter than glass
  • Excellent surface feature replication
  • Optically clear

Information provided by Dow

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Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 70ASTM D2240
Tensile Strength 11.7 MPaASTM D412
Elongation at Break 100 %ASTM D412
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+14 ohm-cm
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.41
@Wavelength 633 nm
Transmission, Visible 91 %
@Thickness 3.20 mm,
Wavelength 380 nm
 93 %
@Thickness 3.20 mm,
Wavelength 450 nm
 94 %
@Thickness 3.20 mm,
Wavelength 760 nm

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PDOW9967 / 233170

Specialty Compounds RTP Company

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