DOWSIL™ 7094: Sealant for solar and photovoltaic panels.
The photovoltaic (PV) market continues to grow, and the demand for PV modules is increasing more and more. In this context, Mascherpa is always careful to offer the best solutions thanks to decades of collaboration with the best brands of industrial adhesives and sealants.
The fluid sealant
DOWSIL™ 7094
has been specially formulated to provide a protective, durable and decorative solution in the construction and solar photovoltaic (PV) panel industry. This sealant is characterized by high durability, highsafety and remarkable flexibility, which are key requirements in such applications. Due to its high temperature and UV stability, it can be used both internally and externally.
DOWSIL™ 7094
is applicable by brush, trowel, or spray, providing excellent repair of PV modules with backsheet degradation and backsheet protection applied at the production stage. The backsheet, located at the base of the solar photovoltaic panel, forms the final layer and is generally made of polymers or combinations of polymers.
DOWSIL 7094 Fluid Sealant – Silicone Protective Coating
DOWSIL™ 7094
, a sealant for solar and photovoltaic panels, cures under ambient conditions, turning into a highly durable elastomer. It createschemical adhesion and acts as an electrical insulator. After curing,
DOWSIL™ 7094
restores insulation and provides reliable protection against the ingress of water and ultraviolet light.
Silicone sealants are distinguished by their outstanding durability, proven for more than 50 years under outdoor conditions. Therefore,
DOWSIL™ 7094
represents a reliable and long-term repair solution.
Features and benefits
- Reliable filling of backsheet cracks, including the deepest ones.
- Restoration ofelectrical insulation.
- Application possible by brush or spray on site, with no need to disassemble the unit.
- Good adhesion on coextruded polyamide (“AAA”) and other common types of backsheets, such as those with PVF, PET or PVDF outer layer.
- Short curing times.
- Excellent strength for long service life.
Specific properties for photovoltaic applications
The fluid sealant
DOWSIL™ 7094
was specially developed for use in solar modules for two main purposes:
- Repair of backsheets with signs of cracking.
- Prevention on modules with backsheets prone to common cracking.
It can be easily applied in the workshop or on site, even on modules already installed with the backsheet facing down. In this regard, the following steps are recommended:
- Thoroughly clean the surface of the backsheet. The cleaning procedure will depend on the type of dirt and the degree of degradation of the backsheet. In general, it is recommended to clean the surface with a damp cloth followed by a dry cloth.
- Apply DOWSIL™ 7094 fluid sealant using a trowel, brush or spray gun.
- Immediately level the applied layer with a trowel, applying light pressure to penetrate the sealant into the cracks.
- Allow the sealant to harden.
