In the solar panel industry, epoxy or silicone resins are most frequently used to pot or encapsulate the exposed apparatus in panels. These resins need to meet exacting specifications to withstand outdoor placement in different environments. For that reason, they are usually both physically and chemically resistant. Importantly, these resins are also resistant to UV light, allowing them to remain stable and optically clear for the life-span of the panels. Examples would include the use of solder pastes to help secure junction box lead connections, and sealants to secure electrical connections. The cells can also receive a layer of encapsulant for complete protection. After production, the edges and frames of the panels need to be sealed and the junction box attached. Lastly, structural adhesives are used for stiffener bar attachment and attaching the mounting brackets.
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