Results of an experimental study and numerical simulation of the curing kinetics of an epoxy binder under the conditions of violation of the stoichiometric equilibrium of its components are presented. The object of research is a two-component composition of an L epoxy resin and an EPH 161 hardener, certified as a binder for composite materials of aerospace purpose. As the basic model, we used a system of two ordinary differential equations describing the behavior of the resin and hardener during the curing process. The values of material parameters necessary for calculations were obtained by a rheological method, where the viscosity of binder was analyzed as a function of polymerization time and hardener concentration. The estimates of model parameters obtained by processing data of full-scale experiments are presented. The effective values of kinetic parameters at which the calculated time of yield loss is in good agreement with the experimental one are determined. The adequacy of the model was confirmed by direct measurements using the IR spectroscopy.

介绍了在违反其组分的化学计量平衡条件下环氧粘合剂固化动力学的实验研究和数值模拟结果。研究对象是 L 型环氧树脂和 EPH 161 硬化剂的双组分组合物，经认证可用作航空航天复合材料的粘合剂。作为基本模型，我们使用了两个常微分方程系统来描述树脂和固化剂在固化过程中的行为。计算所需的材料参数值通过流变学方法获得，其中粘合剂的粘度作为聚合时间和固化剂浓度的函数进行分析。介绍了通过处理全尺寸实验数据获得的模型参数的估计值。确定了计算出的屈服损失时间与实验值吻合良好的动力学参数的有效值。通过使用红外光谱的直接测量证实了模型的充分性。