Are fortasuntm PV junction box adhesives/sealants good?

When FortasunTM PV junction box adhesives/sealants are properly applied, they will provide excellent long-term adhesion and durability. FortasunTM two-part PV junction box adhesives/sealants require correct mixing by the sealant user to achieve intended performance.

How do PV junction box adhesives/sealants cure?

PV junction box adhesives/sealants cure by reaction with water vapor in the air. The cure reaction progress deeper into the joint by diffusion of water vapor. Typical cure times range from 24 hours to 14 days depending on the cure depth.

Does high humidity affect PV junction box adhesives/sealants?

The PV junction box adhesives/sealants will cure faster and have a shorter working time in higher relative humidity environments. Excessively high humidity (>80%) could cause condensation on the substrate surface and adversely affect material adhesion.

What are fortasuntm PV adhesives/sealants?

FortasunTM PV adhesives/sealants are tested to meet PV industry standards and provide durable adhesion between junction box materials (including polycarbonate PPO) to backside construction of the PV panels (glass fluoropolymer laminates, such as Tedlar® laminates, polyester).

What UL testing does fortasuntm PV junction box adhesive / sealant undergo?

As outlined above, all FortasunTM PV junction box adhesives/ sealants have or will undergo the standard UL746 electrical testing known as HWI (hot wire ignition), HAI (high current arc ignition) and CTI (comparative tracking index). Consult the UL website to see the testing result on the potting materials.

What is the encapsulation and backsheet of a solar panel?

The encapsulation and backsheet of the solar panel are important to the long life of a PV module. The backsheet is normally a laminated film composite that protects the internal components of the solar module. Two types of common composite backsheets are listed below.