Ray - 8638 Silicone Rubber for LED light,bulb encapsulation use

RAY-8638 Silicone Rubber for LED light,bulb encapsulation use

RAY-8638

Introductions : Due to the energy saver, best brightness and higher powder LEDs was applied on very field,as general illumination backlight for LCD, and Automotive light. In encapsulation epoxy resin can not stand heat cycle on applications，A new product Silicone rubber ,which had heat and weather resistant ,could be apply on electric circles and LEDs used.

Uncured properties :

RAY8638-A

viscosity :   2500 cps

special gravity:    0.98

appearance:    transparency

RAY8638-B

viscosity :   3000 cps

special gravity:   0.98

appearance :   transparency

Properties after cured :

Volume resistivity :   > 1.0 x 1015 ohm-cm

Dielectric strength :   > 20 Kv/mm

Color :      colorless

refraction :   1.412

Transmittance% :   96% /450nm

Shore :    85 (Shore A)

Lost on heat :   < 0.3%

Operation process :

weight :  Take RAY8638- A and RAY8638- B by 10:1 (weight ratio). Viscosity about 2500 cps after mixed

Defoaming:   Place the mixture in vacuum vessel，kept vacuum lower than 500 mg Hg.

Filler :  Be careful pouring silicone to the container, avoid occur bubble

Harden :  Preheating 100℃X 50 min. then Curing 150℃X 240 min.