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本文对风机叶片用环氧树脂体系的流变性能进行了研究,在粘度实验的基础上,依据双阿累尼乌斯方程建立了与实验数据较为吻合的流变模型。结果表明,两种树脂体系的粘度随温度变化情况基本一致,在23～50℃范围内,其粘度都低于300mPa.s,且低粘度保持时间大于30min,符合风机叶片真空成型对树脂低粘度的要求。所建立的粘度模型可有效预测和模拟树脂体系在不同工艺条件下的粘度行为,揭示树脂体系的优化工艺参数和低粘度平台工艺窗口,为合理拟订工艺参数和保证产品质量提供必要的科学依据。
In this paper, the rheological properties of the wind turbine blade epoxy resin system were studied. Based on the viscosity experiment, a rheological model was established based on the double Arrhenius equation, which is in good agreement with the experimental data. The results show that the viscosities of the two resin systems are basically the same with the temperature. The viscosity of the two resin systems is lower than 300mPa.s at 23-50 ℃, and the retention time of the low viscosity is more than 30min, which accords with the low viscosity Request. The established viscosity model can effectively predict and simulate the viscosity behavior of the resin system under different process conditions, reveal the optimized process parameters of the resin system and the process window of the low viscosity platform, and provide the necessary scientific basis for the reasonable formulation of the process parameters and the assurance of product quality.