With the growing global demand for renewable energy increasing, the solar sector needs innovative materials capable of enduring harsh environmental conditions and ensuring long-term performance. A reliable option is Solar 120, a premium room temperature vulcanizing (RTV-2) silicone sealant utilized in solar energy applications.
People mainly choose this product for being capable of protecting sensitive solar components from different elements. Alstone Solar 120 is specially designed to improve strength, flexibility, and superior adhesion, offering better performance and increased longevity for solar modules and associated systems.
What is Solar 120?
ALSTONE Solar 120 is a high-performance silicone sealant that is used in the solar energy industry to seal joints and cracks in solar panels and other installations. When combined with Alstone Catalyst T 77 or T 77 Plus series curing agents in the prescribed 10:1 ratio by weight, it produces a durable self-bonding silicone elastomer. The common areas of application are sealing of frames, bonding of junction boxes, and fixation of the backrail and mirror elements.
The material can either be manually processed or through automatic metering systems. The sealant cures quickly at room temperature and boasts excellent resistance to weathering, UV radiation, humidity, and heat.
Solar 120 properties
Uncured: This is a Non-slump paste. It is Fast curing at room temperature and is To be cured with alstone Catalyst T 77 or T 77 PLUS series (recommended mixing ratio 10:1).
Cured: Medium hardness. Primerless adhesion to most common substrates (glass, ceramics, metals, plastics, powder coatings). Service temperature: Recommended from –50°C to +180°C. Application bonding:
Applications
Frame Bonding
Production of CPV Modules
Solar Thermal Energy
Key Features of Alstone Solar 120
1. Excellent Weather & UV Resistance
Solar products face constant exposure from sunlight, rain, dust, moisture/humidity, and temperature fluctuations. The Alstone Solar 120 will hold up to the extreme temperatures of up to 180°C (356°F), moisture and humidity, harsh outdoor climates and continuous UV exposure without cracking, shrinking or losing its adhesion; giving enduring performance over time.
2. Robust Adhesion Without Primer
Alstone Solar 120's ability to bond efficiently on a variety of substrates (glass, anodized aluminum, Tedlar films, PVF, PVDF, PPO, PPS, etc.) without the need for primers is one of its most notable advantages. This lowers application time and expenses while streamlining the manufacturing process.
3. Thixotropic and Non-Slump Nature
Thixotropic and non-slump properties mean the sealant will stay in place during vertical or overhead applications. It is therefore ideal for tasks that require accurate bonding and sealing in the assembly of solar panels.
4. Properties of Electrical Insulation
Because of its superior electrical insulation, Alstone Solar 120 is a good choice for delicate solar applications where electrical stability and safety are crucial.
5. Packaging, Storage & Color
Store in a cool, dry place. The “Best Use Before End” date is mentioned on the product label. Product suitability after this date should be verified by testing before use.
Color Available: Black
Packing Sizes Available:
600 ml × 12 Sausage
Part A – 225 kg
Part B – 45 kg
Safety Precautions
During the cure, Alstone Solar 120 releases a total of 1.5 % alcohol. Do not breathe vapors in high concentrations or for extended periods. Therefore, it is recommended to ventilate the workplace.
Conclusion
With the development of solar technology, the demand for durable and high-performance bonding materials is increasing. Alstone solar 120 provides the reliability, flexibility, and weather resistance needed for modern solar energy systems.
This RTV-2 silicone sealant is an excellent choice for manufacturers seeking efficient and durable solar assembly solutions, whether for frame sealing, junction box bonding, or CPV module production. Alstone solar 120 is a trusted sealing and bonding solution for the renewable energy industry with superior UV resistance, thermal stability, and primer-less adhesion.
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