The application of organic silicone adhesives in photovoltaic modules can be roughly divided into 3 categories: bonding, sealing and potting. The bonding and sealing of solar cells with aluminum alloy frame after lamination, the bonding of wiring and backing material, the potting of junction box and the structural bonding of thin film cell and metal front rail are four important parts of silicone adhesives in solar cells.

Silicone adhesives in solar photovoltaic modules on the application of performance

1, process: uniform viscosity, good extrusion rate, smooth thixotropy, no bubbles and crust;

2, mechanical properties: medium hardness, elongation and tensile strength change to small;

3、Bonding strength: the bonding strength with the backplane, aluminum alloy, junction box body and convergence strip should be high enough;

4, yellowing resistance: silica gel in high temperature and high humidity after aging of the surface color change is small;

5, resistance to heat and humidity: the strength, hardness and electrical properties of silica gel after aging in heat and humidity are small;

6, UV resistance: little change in performance after long aging in UV aging box.

Solar photovoltaic power generation is the most economical, cleanest, most environmentally friendly sustainable energy available. Photovoltaic industry has become the fastest growing industry in our renewable energy industry after wind power generation. Due to the existence of thin, brittle, easy to oxidize and other physical and chemical defects of solar cells, etc.. Long-term exposure to high temperature, high temperature, low temperature, strong ultraviolet light, wind and rain, and other natural conditions are easy to cause permanent external damage. As silicone adhesives have good weather resistance, sealing, electrical insulation and other characteristics, they are widely used in the production of cell module packaging.