Study on epoxy resin and composite suitable for pultrusion girder plates of wind power blades
The effects of addition amount of polyether polyol and N,N-dimethylbenzylamine on the properties of epoxy resin system suitable for pultrusion process were studied by viscosity,gel time,glass transition temperature(Tg)and castings mechanical propery tests.The results showed that when the addition amount of polyether polyols and N,N-dimethylbenzy-lamine was 12.0％and 1.0％of the mass of component A,respectively,the viscosity of the resin system was low at room temperature,the applicable period was long,the gel time was short at high temperature,and it could be rapidly cured.The tensile strength,tensile modulus,elongation at break,flexural strength,flexural modulus and Tg of the cured product could reach 67 MPa,2.74 GPa,4.63％,106 MPa,2.73 GPa and 134 ℃,respectively.The glass fiber pultrusion plate prepared by the epoxy system using a 60 cm/min pultrusion process had excellent mechanical properties.
wind turbine bladeepoxy resinpolyether polyolN,N-dimethylbenzylaminepultrusion moldingcom-posite material
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