TECHSiL’s Guide to Momentive INVISISIL Optical Bonding

Momentive INVISISIL optically clear silicones deliver optical clarity and protection required by optical applications and LED lighting. Formulated to offer high optical stability and light transmittance, INVISISIL silicones help to improve the readability of electronics under sunlight and bright ambient light. Additionally, they provide a layer of protection against moisture, chemicals, and physical impacts, making them ideal for applications across the automotive and electronics industry.

During testing under prolonged heat exposure, INVISISIL LED encapsulants were shown to maintain non-yellowing light transmittance more effectively than the LED-grade epoxy substrate they were bonded to. By resisting yellowing these silicones maintain their light transmittance and resists degradation – extending the lifespan of electronics. This is especially important in application where high temperatures and UV light is present such as automotive lights and outdoor applications.

Key Features of INVISISIL Optical Bonding Silicones:

• Protection against moisture, chemicals, and physical impacts
• High optical stability and light transmittance
• Long-term resistance to yellowing or delamination
• Improves light transmission and reduces surface reflection – helps improve readability in sunlight/bright ambient light
• High purity, low viscosity, low volatile outgas, mild thermal cure
• Excellent UV stability
• Protection against high and low temperatures

Potential Applications for Optically Clear Silicones:

• Automotive displays, entertainment systems, and instrument panels
• Consumer and industrial electronics
• Touch screens and displays
• Optoelectronic devices
• Lens bonding
• Navigation screens

For more information about the Momentive INVISISIL range contact our technical team here