The resin system is optimized for the long-life working conditions of wind turbine blades, with added UV stabilizers and anti-hydrolysis additives to solve the aging problem of ordinary prepregs under long-term outdoor exposure. The continuous untwisted roving fiber arrangement has excellent drapability, which can adapt to the curved layup requirements of wind turbine blades. The precise controllable resin content avoids resin enrichment or glue shortage during blade molding. It has passed ISO 10326 composite material certification, with loose storage conditions and can be stored for 3 months at room temperature, greatly reducing the scrap rate of wind turbine blade manufacturing.
The fiber type is E-grade unalkali glass fiber, with an areal weight of 450-600 gsm, prepreg thickness of 0.3-0.4 mm, resin content of 28±2%, curing temperature range of 80-120°C, curing pressure of 0.3-0.5 MPa, tensile strength ≥2800 MPa, tensile modulus ≥75 GPa, flexural strength ≥1800 MPa, performance retention rate ≥90% after 1000 hours of UV irradiation. It is packaged in waterproof composite film, with each roll length of 100m and width of 1000mm/1200mm optional. The fiber surface is coated with silane coupling agent to improve the interface bonding strength with resin.
It is mainly used for structural parts such as main beams and skins of MW-class onshore wind turbine blades and offshore wind turbine blades. It is compatible with vacuum perfusion molding and hot pressing molding processes for wind turbine blade manufacturing, can meet the bulk procurement needs of wind turbine manufacturers, complies with DNV GL offshore wind power material certification standards, and can also be used for structural parts of yachts and large amusement facilities.
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