超声塑化非晶聚合物颗粒界面摩擦生热的仿真研究

发布时间：2018-03-14 21:12

  本文选题：超声塑化　切入点：界面摩擦生热速率　出处：《中国塑料》2017年08期 　论文类型：期刊论文

【摘要】：为分析超声塑化非晶聚合物颗粒的界面摩擦生热过程和超声塑化参数对界面摩擦生热速率的影响,利用LS-DYNA程序和Ansys仿真模拟了界面摩擦生热过程。结果表明,超声频率、超声振幅和塑化压力的增加可显著提高聚合物颗粒的界面摩擦生热速率,其中超声振幅对界面摩擦生热速率的影响更显著;当超声振幅为20μm,超声频率为30kHz,塑化压力为0.8kN时,在0.05278s内聚合物局部温度升高到224.5℃,生热速率达到3874.5℃/s,得到界面摩擦生热是瞬态过程。
[Abstract]:In order to analyze the interface friction heat generation process of ultrasonic plasticized amorphous polymer particles and the effect of ultrasonic plasticizing parameters on the interface friction heat generation rate, the interface friction heat generation process was simulated by using LS-DYNA program and Ansys. The increase of ultrasonic amplitude and plasticizing pressure can significantly increase the interfacial friction heat generation rate of polymer particles, especially when the ultrasonic amplitude is 20 渭 m, the ultrasonic frequency is 30 kHz, and the plasticizing pressure is 0.8 kN, especially when the ultrasonic amplitude is 20 渭 m, the ultrasonic frequency is 30 kHz, and the plasticizing pressure is 0.8 kN. The local temperature of the polymer increases to 224.5 鈩，

本文编号：1612947