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SILASTIC™ MS-4007 Moldable Silicone Kit

Optically clear, medium viscosity, high Shore A hardness, two-part, 1:1 ratio, fast heat curing optical molding resin for producing optical parts with good resistance to environmental aging. – Moldable Optical Silicone.

Uses:

  • Injection molding secondary optics:
    • Lens clusters
    • Light guides
    • Light pipes
    • Free form collimators

Benefits:

  • High thermal stability
  • Better heat and UV resistance than optical grade plastics
  • Opportunity for reduced cycle time due to reduction in scorch time
  • Meets UL-746C-f1/UL-94 certifications for outdoor applications
  • Complements the existing SILASTIC™ MS-10XX Moldable Silicones

Properties

These values are not intended for use in preparing specifications.

Typical Properties

  • Abbe Number, a.i. Yes No 51
  • Color Yes No Clear, Colorless
  • Dielectric Strength Yes No 25.6 volts per mil v/mil
  • Dielectric Strength (kV/mm) Yes No 25.6 kV/mm
  • Durometer - Shore A Yes No 70 Shore A
  • Elongation Yes No 100 %
  • Linear CTE Yes No 270 um/m/Deg C
  • Luminous Transmittance, 10mm thickness Yes No 93 %
  • Number of Parts Yes No Two
  • Optical Function Type Yes No Transparent
  • Process Yes No Injection Molding
  • Refractive Index at 589.3nm Yes No 1.413
  • Specific Heat Yes No 1.39 J/Kg.K
  • Tensile Strength Yes No 1700 psi
  • Viscosity Yes No 10500 mPa.s
  • Viscosity - Part A Yes No 28 Pa.s
  • Viscosity - Part B Yes No 9.5 Pa.s
  • Volume Resistivity Yes No 1.00E+14 Ω・cm
  • Working Time in hrs at 25 Deg C Yes No 48

This award winning moldable optical silicone is an optically clear, medium viscosity, high Shore A hardness, fast curing molding resin for producing optical parts with good resistance to environmental aging. It has a smooth, low-tack, plastic-like surface and enables the molding of complex, finely detailed optical parts and secondary lenses. It remains relatively soft after injection molding, with high elongation capability for easy demolding of complicated parts, such as those designed with a combination of thick and thin areas (e.g., lens clusters). After demolding and post-curing, it reaches its final mechanical properties and produces hard and tough optical parts. It shows enhanced stability of optical performance upon high heat, high humidity and UV exposures, meeting the most demanding requirements for outdoor lighting applications.

For optic designs in which the highest degree of transmission is required, SILASTIC™ MS-4007 Moldable Silicone enables excellent optical performance with a unique balance of mechanical and molding properties.

Imagine a brighter future

Dow creates proven, high-performance silicon-based materials that help you create next-generation lighting. We offer today’s LED industry unmatched experience and know-how for LED lamp and luminaire assembly. Dow lighting experts work alongside your team to test designs, recommend modifications and provide total solutions to your challenges. Our partnership network of molding and optical experts helps our customers develop the best solutions.

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SILASTIC™ MS-4007 Moldable Silicone Kit
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SILASTIC™ MS-4007 Moldable Silicone Kit
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