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[Industry Reports]：What new materials are used in the new energy industry?

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According to the general view of the industry, new energy can be divided into photovoltaic, wind power and other industries. Among them, photovoltaic is currently the largest industry in the new energy field, followed by wind power, while nuclear energy, tidal and other energy sources are currently new energy industries. The proportion is relatively small. Therefore, this paper mainly analyzes the application of new materials in photovoltaic and wind power two new energy industries.

in 1, in the photovoltaic industry, the new material application type is single, but the consumption growth rate is faster.

photovoltaic materials refer to materials that directly convert solar energy into electrical energy, and the key component is solar panels. The solar panel consists of five layers, namely, photovoltaic glass, EVA, solar cell, EVA and backplane. The cells are single crystal silicon, polycrystalline silicon, amorphous silicon and other semiconductor materials.

Therefore, in solar panels, an important chemical material is EVA. EVA as a package cell sheet of hot melt adhesive, can be the cell sheet and tempered glass and backplane firmly bonded together to prevent the external environment on the electrical properties of the cell sheet, while enhancing the light transmission of photovoltaic modules, is conducive to improving the electrical performance of photovoltaic modules output.

Figure 1 Solar panel composition

The solar photovoltaic backsheet, the main material is polyvinyl fluoride composite film material (TPT), the material is composed of three layers of composite materials, respectively, PVF, PET and PVF, with good insulation, aging resistance and water resistance, the battery sheet played a very good protection and support role.

In addition, in the photovoltaic industry, the transmission of power after solar power generation requires high-voltage and ultra-high-voltage cables, in which cross-linked polyethylene plays a key role. Cross-linked polyethylene has high voltage load, flame retardant properties and water resistance, weather resistance, etc., is widely used in high-voltage and ultra-high voltage cable outer protective shell.

2, in the wind power industry, new materials application types

wind power industry upstream materials are mainly tower, fan, nacelle cover, main shaft, cable and blades, of which the wind turbine blade is the wind energy into mechanical energy of one of the key core components, its cost accounts for the total cost of wind power system 20%-30%. From the wind power blade structure, it is mainly composed of reinforced materials (beams), sandwich materials, matrix materials, surface coatings and structural adhesives between different parts.

wind turbine blade materials, of which 80% of the cost comes from the blade material, and in the blade material, 60% of the raw materials come from the reinforcement fiber and matrix resin material. Commonly used matrix materials include unsaturated polyester resin, epoxy resin, vinyl resin, etc., and the reinforcing materials are mainly carbon fiber reinforced composites (CFRP) and glass fiber reinforced composites (GFRP).

In addition, the coating material of the blade determines the weather resistance and use time of the wind turbine blade, which plays a very important role. Among the wind turbine blade coating materials, the main application materials are polyurethane, fluoropolymer and polypropionate three types of coating materials, which belong to the high-end coating category.

Figure 2 Wind turbine blade composition

风力发电叶片构成.png

in addition, in the wind power blade composition, the sandwich material mainly uses PVC foam, in addition PMI foam, SAN foam, light wood and natural fiber (bamboo fiber) can also be used as a sandwich material.

According to relevant statistics,

shows that in the field of wind power, the application scale of carbon fiber exceeds 20000 tons, and it is expected to show a growth rate of 200 in the future. It is estimated that by 2025, the global wind power industry, carbon fiber consumption scale will be close to 100000 tons.

the rapid growth of the new energy industry in

has driven the development of new material consumption applied in the new energy industry. With the change of industry technology and the development of new energy industry in special environment, more and more new materials will be used in the new energy field.

Source: Chemical Flat Head Brother

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