以聚丙烯为研究对象，分析了结晶型聚合物注射成型过程中晶态结构对成型工艺的影响，提出了结晶项和黏度变化因子的计算模型，优化了聚合物宏观本构方程。通过实例的模拟分析和对比，证明所提出的基于结晶微结构特征的优化模型是行之有效的。该模型为注射成型的准确模拟和制品性能预测提供了依据。%The influence of crystalline structure on injection molding technological parameter of crystalline polymer was analyzed with polypropylene as an example.The constitutive equation based on the characteristics of crystal polymer was optimized,and the calculation model of crystalline item and viscosity factor was given.Through the example simulating and contrasting,the optimized model was proved to be effective.The model can provid evidence for the accurate prediction of injection moulding products.
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