Wind turbine blades are mainly made of thermosetting matrix resins such as polyester resin, vinyl resin and epoxy resin, and reinforced materials such as E glass fiber, S glass fiber and carbon fiber. carbon, which are laid manually or injected. with resin. Composite molding process.
Fan blade material types and performance characteristics:
For the same matrix resin, the strength and stiffness performance of glass fiber reinforced composite material blades are worse than glass ones. Fiber reinforced composite materials. Performance of carbon fiber reinforced composite blades. However, the price of carbon fiber is currently about 10% of that of glass fiber. Due to price factors, the reinforcing materials currently used in blade manufacturing are mainly fiberglass.As blade length continues to increase, blades also impose new requirements on the strength and stiffness of reinforcing materials. Fiberglass appears to be gradually showing performance defects in the manufacturing of large composite blades. To ensure that the blades can safely withstand external loads such as wind temperature, wind turbine blades can use hybrid fiberglass/carbon fiber composite material structures. Particularly in parts such as flanges that require high strength and rigidity, carbon fiber is used. as a reinforcing material. In this way, not only can the bearing capacity of the blades be improved, but damage to the blades caused by lightning can also be effectively avoided through the conductivity of carbon fiber.
During the operation of the wind turbines, the bladesThe fan must withstand high wind loads, gas erosion, impact of sand and gravel particles, ultraviolet rays and other external effects. In order to improve the lift, corrosion resistance and erosion resistance of composite blades, the resin matrix system should be carefully designed and improved, and epoxy resin with excellent performance should be used at the same time. place unsaturated polyester resin to improve the adhesion of the fiberglass. /resin interface. Improve knot performance, improve blade load capacity, and expand the application scope of fiberglass in large blades. Meanwhile, to improve the long-term performance of composite blades in harsh working environments, new UV-resistant epoxy resin systems can be used.
What is the required hardness of pallet materialses of wind turbines?
Stretchable fiberglass reinforced blades have good durability and corrosion resistance
Resistance to acid, alkali and atmosphere. corrosion, no regular maintenance required, uniform material, strong flexibility, consistent size, standard weight, smooth surface, etc.
Mainly used for: wind turbines, wind water pumps, highway anti-glare panels.
Most rotor blades on large wind turbines are made of glass fiber reinforced plastic (GRP). Using carbon fiber or aramid as reinforcement is another option, but such blades are not economical for large wind turbines. Wood, epoxy wood or epoxy-wood fiber composites are not yet present in the rotor blade market, although there are developments in this area. Steel and aluminum alloys respectively have problems such as weight et metal fatigue. They are currently only used in small wind turbines.
Resists wind and rain. With the development of the wind power industry, the requirements for blades are getting higher and higher. The hardness of wind turbine blade materials requires them to be corrosion resistant. It has good external radiation and lightning performance, is light in density, and has the best fatigue resistance and mechanical properties. The hardness of the wind turbine blade material is necessary to resist wind and rain. Wind turbines are electrical equipment that convert wind energy into mechanical work, which causes the rotor to rotate and ultimately produces alternating current.