LED high-power integrated add silica powder

I. Introduction LED high-power integrated special package Silicone liquid two-component silicone encapsulants. Mainly used in high-power integrated module and COB packages and so on. After curing translucent medium having high hardness and high light efficiency. This product is excellent electrical properties of metal stents (copper, silver and aluminum) and other metal materials and PPA excellent adhesion, excellent sealing, (after completion of tweezers to peel off plastic cake packaging difficulties, the residual more). After the package can be improved LED external shocks, vibration resistance, improve internal components, insulation between the lines, the LED has good durability and reliability. Second, the product features high transmittance, easy deaeration, good flow properties. LED packaged with good light scattering properties, no spot, high lumens, (than ordinary silicone encapsulation of lamp beads above the average of about three lumens per watt), and even change the light fades, light attenuation (experimental test have lit a small decline of 3000 less than 5%). Third, the use of 1, a weight ratio of A: B = 1: 1 ratio with glue and mix well. 2, vacuum degassing 20 minutes or until no bubbles (pumping speed 3L / sec vacuum degree in just 10 minutes or so). 3, prior to dispensing, please stand preheat 60 minutes in addition to wave at 150 ℃. As soon as possible before the stent not re-absorb moisture sealant. First 80 ℃ bake 1 hour early cure, then heated to 150 ℃ bake for 3.5 hours curing segmentation can effectively solve the problem of bubbles to improve the yield. Fourth, note storage, use and process must ensure that phosphorus (P), sulfur (S), nitrogen (N) and organic tin (Sn) compounds such as contacts, dry and dark place, to prevent moisture absorption silica.