Silicone Rubber for LED ,IC Encapsulating use Our silicone series for encapsulation field exclusively apply in LED, IC chips, CPU & VLSI to transfer the internal heat to outside region, stain higher temperature, moisture proof,adhesive for better weather resistance . Our silicone series is suitable for temperature (-50) to 250oC for a long time operation amd still keep their characters. It is the best material for Encapsulation purpose specially compare to the epoxy resin. The most popular Silicone Rubber RAY-8632 for LED , specificationas under. RAY-8632 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 : RAY8632-A viscosity 5000 cps special gravity 1.01 appearance transparency RAY8632-B viscosity 1500 cps special gravity 1.01 appearance transparency Properties after cured : Volume resistivity > 1.0 x 1015 ohm-cm Dielectric strength > 20 Kv/mm Color colorless refraction 1.522 Transmittance% 92% /450nm Shore 30 (ShoreA) Lost on heat < 0.1% Tension strength 20. kg/cm2 Thrinkage 0.2% Operation process : weight Take RAY8632- A and RAY8632- B by 10:1 (weight ratio). Defoaming place the mixture in vacuum vessel，kept vacuum lower than 100 mg Hg. Filler Be careful pouring silicone to the container, avoid Occur bubble Harden Heating 150℃X 30 min. then finish.
