Abstract:

With the help of physical and analytical models of polymer melting under the impact of pure vibration force field, the expression of polymer melting rate and vibration parameters was obtained. Low-density polyethylene (LDPE) was used in the calculation, and some conclusions were obtained. Melting rate increased with the increase of vibration frequency and amplitude. However, after vibration intensity reached a limit value, melting rate would remain unchanged. In the end, a multidimensional vibration experiment was used to prove the validity of the conclusion. Calculations were in good agreement with the result of experiment. This research will serve as the basis for polymer processing and equipment design.

摘要：

在已建立的纯振动场作用下聚合物熔融塑化过程物理模型和解析模型的基础上，推导出了聚合物熔融速率与振动参数的关系表达式。使用低密度聚乙烯（LDPE）进行实例计算，得出：纯振动场作用下，熔融速率随振动频率和振幅的增加而增加，并最后趋向一稳定值。最后运用多维振动实验台进行实验验证，实验结果与理论计算结果符合得很好，证明物理模型以及数学推导的正确性，为聚合物成型加工工艺制定及成型设备研制提供了理论依据。