冷喂料橡胶挤出机喂料过程动力学  

Dynamics in Feeding Process of Cold Feed Rubber Extruder

作　　者：胡雪华 刘彦昌[1] 潘弋人 Xuehua Hu;Yanchang Liu;Yiren Pan(Institute of Mechanical and Electrical Engineering,Shandong Key Laboratory of Advanced Manufacturing of Polymer Materials,Qingdao University of Science and Technology,Qingdao 266061,China)

机构地区：[1]青岛科技大学机电工程学院高分子材料先进制造山东省重点实验室,山东青岛266061

出　　处：《高分子材料科学与工程》2023年第3期112-117,126,共7页Polymer Materials Science & Engineering

基　　金：山东省重大研发计划(重大科技创新工程)(2020CXGC010312)。

摘　　要：文中将冷喂料挤出机喂料楔形间隙简化为线性楔形区域,采用Bird-Carreau本构模型,对喂料过程进行动力学模拟,得到了沿楔形方向的压力分布以及在楔形区横截面上的压力和速度分布的图像。将模拟结果与前期试验数据以及基于牛顿本构模型的计算结果相对比。通过对比发现,它们都有相似的变化趋势。沿楔形方向压力呈现的模拟结果小于计算结果而大于试验数据,并且在楔形区入口位置,模拟结果和试验数据都有压力值;在楔形区横截面上的压力和速度分布,模拟结果小于计算结果。通过研究表明,已有的基于牛顿本构模型的计算方法,尽管可以粗略地分析喂料过程动力学,但是更精确的喂料过程动力学模型必须考虑胶料非牛顿行为和在机筒表面合适边界条件。The feed wedge gap of the cold feed extruder was simplified into a linear wedge region,and the feeding process was dynamically simulated by using the Bird-Carreau constitutive model.The images of the pressure distribution along the wedge direction,and the pressure and velocity distribution on the cross section of the wedge region were obtained.The simulation results were compared with the previous test data and the calculation results based on the Newton constitutive model.Through comparison,it is found that they all have similar change trends.The simulation results along the wedge direction are smaller than the calculation results but larger than the test data,and at the entrance of the wedge area,both the simulation results and the test data have pressure values.The simulation results of the pressure and velocity distribution on the cross section of the wedgeshaped area are smaller than the calculation results.The research in this paper shows that although the existing calculation methods based on Newton's constitutive model can roughly analyze the dynamics of the feeding process,the more accurate dynamic model of the feeding process must consider the non-Newtonian behavior of the rubber compound and the appropriate boundary conditions on the surface of the barrel.

关 键 词：冷喂料挤出机 喂料过程 动力学 

分 类 号：TQ330.4[化学工程—橡胶工业]