The Lamp- LED package is in the form of a potting. The potting process is to first inject liquid epoxy into the LED molding cavity, then insert the pressure-bonded LED bracket into the oven to cure the epoxy, and then remove the LED from the cavity to form. The LED potting process seems to be very simple, but pay attention to the following aspects:
1. Mount the mould strip on the aluminum boat in a certain direction. After the dust was blown, it was placed in an oven at 125 ° C / 40 minutes for preheating.
2. According to the demand of the production, the glue is mixed, and then the prepared glue is evenly stirred and placed in a vacuum oven at 45 ° C / 15 minutes for defoaming.
3. Gluing, first baking (3φ, 5 φ product initial baking temperature is 125 °C / 60 minutes; 8 φ -10 φ product initial baking temperature is 110 °C / 30 minutes +125 °C / 30 minutes)
4. Perform mold release and then heat for 125 °C / 6-8 hours. If the glue is poor, the following phenomena may occur:
1). The bracket is inserted, the bracket is inserted deep, the bracket is inserted shallowly, the bracket is inserted, the bracket is crawling, the bracket is yellowed (oxidation, baking temperature is too high or the time is too long)
2). Bowl bubble, pearl bubble, linear bubble, surface pinhole bubble 3). Impurity, multi-glue, less glue, atomization 4). Water surface, colloid damage, colloid crack (glued aging or wrong ratio) The colloid turns yellow (the proportion of A glue is too large).
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