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In the field of solar energy, adhesives are mainly used for the sealing of solar panels, boundary sealing, and replacement of aluminum and glass; in the field of wind energy, adhesives are mainly used for the thread and sealing of wind energy generators and the sealing of wind turbine gearboxes. , The leaves are allowed.
Take wind power as an example. During the "Eleventh Five-Year Plan" period, the annual average annual increase of installed wind power capacity is as high as 95.5%, and the growth rate far exceeds the global average. It is estimated that by 2020, the gradual installed capacity of wind power will reach 230 million kilowatts. This provides a broad market space for epoxy resin structural adhesives for wind turbine blades. According to relevant data, in the wind power industry, epoxy structural adhesive is mainly used for the casing of the upper and lower shells of wind turbine blades. At present, most of the domestic wind turbines are 1.5MW units, each unit requires three blades, and the amount of annular structural glue for each blade is about 0.35 tons. If the installed capacity of wind power in 2020 reaches 230 million kilowatts, the demand for epoxy structural adhesive will reach 13.1 seconds.
As a renewable energy source, solar energy is clean, safe and reliable. The construction of power stations does not require high positioning, and the time and cost required are relatively low. It also has a better prospect in future development. All countries are vigorously developing solar power generation. In the past five years, the average annual growth rate of global solar cell production was 50-60%, and the average growth rate in the next few years will remain at 20-25%.
According to the European Joint Research Center's forecast, by 2030, solar power will account for more than 10% of the world's total electricity supply. Solar photovoltaic power generation almost started in 2000, but its development speed is very fast. The average growth from 2000 to 2013 was 143.6%. In 2013, the output of solar cells reached 4200MW, making it the world’s largest country in terms of solar cell production, accounting for approximately the world’s total 50% of output.
The adhesives for solar cells are mainly epoxy structural adhesives, EVA adhesive films, and silicone adhesives.
Epoxy resin structural adhesive is used for the cutting of solar cell silicon wafers, with high strength, stress and process requirements; EVA adhesive film is used for the assembly of solar cell modules. The glass panel of monocrystalline silicon cell and the silicon wafer and backplane may be combined The glass panel of the thin film battery is assembled with the back film diaphragm, and the expected strength, light transmittance, weather resistance, and water vapor penetration are high; silicone glue is used for solar module cross sealing and junction box potting, and the frame sealing requires weather resistance It has good water vapor permeability, and it is used for junction box potting and requires good electrical performance and thermal conductivity.
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