风机叶片用环氧树脂的固化动力学研究

Study on curing kinetics of epoxy resin used for wind turbine blades

通过动态DSC(差示扫描量热法)研究了佳发JH-239、惠利LT-5078A等两种风机叶片用环氧树脂的固化动力学特征温度,并采用Kissinger、Crane法确定它们的固化动力学参数。结果表明:佳发树脂体系的表观活化能为40.60 kJ/mol,惠利树脂体系的表观活化能为45.91kJ/mol,而二者的反应级数分别为0.8592和0.8730,近似于一级反应。最后根据Arrhenius方程得到各自的指前因子及其固化动力学模型,并与一种国外成熟的叶片用树脂体系(亨斯迈树脂)进行比较,结果表明三者的动力学性能较为接近。

The curing kinetics characteristic temperatures of the two epoxy resins（Jiafa JH-239 and Huili LT-5078A） used for wind turbine blades were investigated by DSC（Dynamic Stability Control）,and the curing kinetic parameters were determined with the methods of Kissinger and Crane.The results showed that the apparent activation energy of Jiafa resin system was 40.60 kJ/mol,that of Huili resin system was 45.91 kJ/mol,the reaction order of the two were respectively 0.8592 and 0.8730,and this was similar to first order reaction.Finally,the pre-exponential factors and curing kinetics models of each system were obtained according to Arrhenius equation,then a comparison was made with an oversea mature resin system（Huntsman resin） used for wind turbine blades,and the results showed that the dynamic characteristics of the three systems were quite close to each other.