| 摘要 |
A wind turbine blade is disclosed, at least 50 % of the surface of which is covered with a self-adhesive, thermoplastic film. A method of manufacturing and repairing such a wind turbine blade is also disclosed. A two layer thermoplastic film suitable for covering the surface of a wind turbine blade is also disclosed. The film comprises a surface layer and a lower layer. The surface layer comprises 50 % to 85 % of polyvinylidene fluoride (PVDF), wherein up to 30 % of the polyvinylidene fluoride may be replaced by hexafluoropropylene (HFP); and 10 % to 45 % polymethyl methacrylate (PMMA). The lower layer comprises 10 % to 45 % of a polyvinylidene fluoride (PVDF) polymer, wherein up to 30 % of the polyvinylidene fluoride may be replaced by hexafluoropropylene (HFP); and 50 % to 85 % PMMA. Optionally the surface and/or lower layer comprises up to 8 % UV stabilisers/absorbers; up to 10 % matting agent; and up to 40 % of an inorganic pigment. The film has an initial gloss of less than 30 % when measured with a ref lectometer at a angle of 60 degrees. |
