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Silicone Encapsulant with Low Refractive Index


1. Ideal encapsulation material with low refractive index
2. Excellent fluidity
3. Great performance in resisting heat, cold and UV lights
4. Remarkable adhesive property to metal, PPA, ceramics and other base materials

The low refractive index silicone encapsulant is an ideal solution for LED encapsulation applications.


Typical Properties
Before curing Physical properties SR2524A SR2524B
Appearance Colorless and transparent Colorless and transparent
Refractive index ( 25°C ) 1.41 1.41
Density (g/ cm) 1.02 1.02
Viscosity ( 25°C )mPa·s 5500 4500
Mixing ratio 100 100
Viscosity after mixing ( 25°C )mPa·s 4800
Operable time ( 25°C ) 2h
After curing SHORE hardness 0A
Refractive index ( 25°C ) 1.41
Tensile strength (Mpa) 7
Light transmittance (450 nm, 1 mm) 94%

1) Curing condition: curing for 12 hours at normal temperature
2) Storage: Store the silicone encapsulant at room temperature in an indoor dry and ventilated place without direct sunlight. Shelf life is 12 month.
3) Viscosity is measured by NDJ-79 rotary viscosimeter.
4) Above table is only for reference use. Contact us detailed molding process.

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