兆瓦级风力发电机叶片用环氧树脂

Epoxy resin system for megawatt wind turbine blades

针对兆瓦级风机叶片用纤维/环氧复合材料的特殊要求,开展了适用于真空辅助灌注(VARTM)工艺的环氧基体树脂的国产化研究。采用国产环氧树脂与实验室自制的稀释剂制备环氧树脂与胺类固化剂配合使用,通过示差扫描量热分析,IR光谱,力学性能,耐热性、粘度及吸水性测试等研究了环氧树脂与固化剂配比对其工艺和固化物性能的影响,获得了初始粘度低、粘度对温度不敏感、操作时间长的环氧基体树脂,其树脂浇注体的拉伸性能、弯曲性能均优于国外环氧树脂固化体系,可满足兆瓦级风机叶片用高性能复合材料的使用需求。

The localization studies of epoxy resin system for vacuum-assisted resin transfer molding（VARTM） process which met the special requirements of fiber / epoxy composites for megawatt wind turbine blade were carried out.The epoxy resins prepared from domestic epoxy resin and laboratory-made epoxy diluent were used in conjunction with the amine curing agent.The effect of mass ratio of epoxy resin to curing agent on the curing process and the properties of the cured product were investigated by differential scanning calorimetry,IR spectroscopy,mechanical properties,heat resistance,viscosity and water absorption tests.The matrix epoxy system with low initial viscosity,insensitivity of viscosity to temperature and long operating time were developed.The tensile strength and flexural strength of the castings were all better than the foreign products and met the needs of high-performance composite materials for megawatt wind turbine blades.