For more information, please download the TDS available in PDF format below.
Bluesil™ ESA 7246 is an optically clear two-component heat or room temperature curing liquid silicone elastomer that cross-links by a polyaddition reaction. This product is well suited for applications that require a clear, room temperature or heat curable silicone elastomer for encapsulation of solar electronics or the formation of optical solar devices. These products cure without regard to the thickness of the material, and the cure rate is controlled by the temperature of silicone during cure. For many applications the use of a primer may be required if adhesion is necessary.
• Battery and Power Pack protection and potting
• PCB and electronic potting compound
Mix Parts A and B (10:1 by weight respectively) and pour the product into place over desired electronic assembly.
Bubbles may gather in the material during the mixing and pouring processes. If this is not desired, then the material must be deaired. Deairing can be accomplished by placing the mixed product in a vacuum chamber and reducing the pressure over the material until the bubbles rise and break.
Alternatively, another method to add silicone to a desired container without capturing bubbles is to use an automated dispensing machine with a vacuum deairing feature. The Parts A and B will be deaired in individual containers under vacuum and then pumped and mixed through a static mixing head to provide air free product in the container prior to cure.
Cure can be accomplished simply by leaving the product for 8 hours at room temperature (or longer if desired). However, the recommended method for cure is via a heat cure. Higher temperatures will provide faster cure.