【作者】 李波；

【导师】 严正；

【作者基本信息】 四川大学 ， 材料加工工程， 2006， 硕士

【摘要】 目前，根据结晶动力学方程结合相关的测试方法对聚合物的结晶行为进行描述的研究时常见著于各种文献，但是对在振动场作用下注射成型的聚合物结晶动力学的研究却鲜有报道。当前，聚合物成型模拟技术随着计算机技术的飞速发展得到了广泛的应用，本文将通过聚合物结晶动力学理论公式和振动注射成型装置的特点建立数学模型以模拟叠加振动场后注射成型的聚合物结晶动力学行为。 本文的模拟基于本课题组自行设计的振动注射成型装置，此装置巧妙的将剪切振动与压力振动结合起来，应用此套装置生产的产品力学性能有极大提高。为表征其结晶行为变化的内部机理，本文以Avrami方程为基础，考虑到高聚物结晶过程中的相关因素和剪切过程中聚合物的流变行为对聚合物结晶的影响，再根据装置的特点结合Clausius Clapeyron方程建立数学模型，并根据振动频率，振幅，压力等因素的作用对数学模型进行简化。采用Matlab语言编写程序，通过程序运行所得的模拟结果反映出的聚合物结晶趋势与本课题组的实验结果相符和，说明在一定范围内，此数学模型可以表征此振动注射装置生产的聚合物结晶行为。由于建模时对有关物理模型进行了简化与近似，同时某些计算参数为参照相关文献取得，因此计算模拟结果与此振动注射装置生产的实际结果可能有一定的误差。 对叠加振动场后注射成型的聚合物结晶动力学的模拟技术进行研究，对以后振动场作用下的成型工艺、成型制品的凝聚态结构和振动成型装置的设计有着很大的理论指导及实际意义。更多还原

【Abstract】 The research on the polymer crystallization kinetics behavior based on related experiment and test methods is always published on many journals, but very few people research the crystallization kinetics behavior of the polymer molded by vibrating injection. On the other hand, various polymer molding simulation methods are emerged due to the rapid development of the computer technology. This paper will discuss the creation of the mathematics model to simulate the crystallization kinetics behavior of polymer molded via injection in vibrating field based on the theory equation and the characteristics of the vibrating injection device.The modelling target is the vibrating injection molding device designed by our own technique task group. This device incorporate the shearing vibrating and pressure vibrating together which facilitates the mechanics property of the polymer product. To represent the kinetic mechanism of the crystallization behavior, the mathematics model is set up based on the Amrami equation considering the related factors concerning the crystallization of polymer and the effect to polymer crystallization caused by rheological behavior during the shearing process. The model also results from the incorporation of the device characteristics and Clausius Clapeyron equation and simplified by the factors including vibration frequency,swing and pressure etc. The modelling result gotten更多还原