Wind turbine blade leading edge protection material and preparation method and application thereof

Abstract

The invention discloses a wind turbine blade leading edge protection material and a preparation method and an application thereof, and the wind turbine blade leading edge protection material comprisesa PVDF film and an epoxy resin-based coating; wherein the epoxy resin-based coating comprises the following components in parts by weight: 100 parts of epoxy resin; 0.4-1.5 parts of an initiator; and8-20 parts of a solvent. According to the protection material, the polar epoxy resin coating is formed on the surface of the PVDF film by adopting an irradiation grafting method, so that the bondingperformance of the PVDF film is improved, the PVDF film and the blade can be integrally formed and cured when the wind turbine blade is poured and formed, and the PVDF film is firmly bonded with the surface of the wind turbine blade; the protection effect on the front edge of the wind turbine blade is good, the protection period is long, and the requirements that the wind turbine blade front edgeprotection material can achieve effective protection and is free of maintenance in the blade service period are met.

Description

Technical field[0001]The present invention relates to the field of wind power blade protection, and more particularly to a wind-moving blade leading edge protective material and a preparation method thereof.Background technique[0002]Epoxy resin has good mechanical properties, chemical resistance and dimensional stability, is the preferred material of large wind power blades. At present, the wind power blades are mostly prepared by glass fiber or carbon fiber reinforced epoxy resin. The wind turbines are generally installed in remote areas, and the operational environment is harsh, and the blade is a unique component of the capture wind energy. The leading edge is the most prone to corrosion on wind power blades due to long-term wind friction and the impact of sand, salt fog, rainwater. Part; especially the leaf tip of the blade, due to the relatively thin and the linear speed of the leaf tip is very large, the corrosion of the part is the most serious in the entire blade. After corr...

AI Technical Summary

Problems solved by technology

However, the protective film has strict requirements on the construction process. Before applying the film, it is necessary to use fine sandpaper to polish and clean the surface of the leading edge film area. The workload is large, and tiny air bubbles are not allowed during the film application process; It is easy to damage the protective film, and the blades often have blisters, edge curling, and weathering and displacement of the protective film at the blade tip during operation. The service life of the protective film is generally only 4 to 5 years, and it needs to be replaced again, and the maintenance cost is very high. high

In the prior art, there are leading-edge protective paint products that can be used for blade leading-edge protection, which are mainly applied by spraying, brushing or rolling of conventional paints, but the operating time of the leading-edge protective paint is short, and the temperature and humidity operation The scope is narrow, only applicable to factory manufacturing, not applicable to on-site leading edge protection and maintenance of wind turbine blades

[0004] PVDF (polyvinylidene fluoride) has excellent weather resistance, wear resistance, toughness and pulverization resistance, etc. Its outdoor service life can reach more than 20 years, which can meet the maintenance-free requirements of wind power blade leading edge protection materials during the service life of the blade. However, the coating of PVDF coating needs to be baked at high temperature, and the processing process is cumbersome, which limits its application on wind power blades; the surface viscosity of PVDF film is poor, and it is difficult to bond with the surface of wind power blades. The protection effect of wind turbine blade leading edge protection is not good

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