As the global demand for renewable energy continues to grow, solar photovoltaic power generation, as a clean and renewable energy form, has been vigorously promoted and widely applied by governments around the world. Solar photovoltaic panels, as an important component of photovoltaic power generation systems, are crucial to the performance and reliability of the entire system. In the manufacturing process of solar photovoltaic panels, sealant is an important part. It is widely used for the sealing and bonding of photovoltaic panel frames, which can achieve excellent waterproof and dust - proof effects, enhance the stability and durability of photovoltaic panels, and effectively meet the bonding requirements of solar photovoltaic panels.
Solar photovoltaic panels are mainly composed of solar cells, glass plates, EVA films, backsheets, and frames. Among them, solar cells are the core of the photovoltaic panel, responsible for converting light energy into electrical energy; the glass plate and backsheet play the roles of protecting and supporting the cells respectively; the EVA film is used to encapsulate the cells to prevent the intrusion of moisture and oxygen; the frame is used to fix the structure of the entire panel. The application of silicone sealant in photovoltaic panels is mainly for bonding and sealing. It can ensure the effective connection between various components of the photovoltaic panel and improve the overall performance and durability of the panel.
Characteristics of silicone sealant:

• Temperature resistance: Silicone sealant has excellent temperature - resistance performance. It can maintain good sealing and bonding performance in the temperature range from - 50°C to 200°C, adapting to various harsh environments during the use of photovoltaic panels.
• Weather resistance: Silicone sealant has excellent anti - yellowing properties. It can resist ultraviolet rays, moisture, and ozone corrosion, ensuring the long - term stable operation of photovoltaic panels.
• Electrical insulation performance: Silicone sealant has excellent electrical insulation performance, which can effectively prevent short - circuits and ensure the safety performance of photovoltaic panels.
• Impact resistance: After curing, silicone sealant can form a flexible adhesive layer with excellent impact resistance. It can buffer the stress of the panel during transportation and installation, improving the overall stability of the panel.
• Environmental protection performance: Silicone sealant is solvent - free, harmless to the environment and human body, and meets the requirements of green environmental protection.
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