Physical Visualization of Polymer Flow Characteristics During Co-Injection Molding

被引：0
|
作者：
Jiang K. [1 ]
Lu Y. [1 ]
Yang L. [1 ]
Wang L. [1 ]
机构：
[1] Engineering Research Center of Plastic Molding Products of the Ministry of Education, Dalian University of Technology, Dalian
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2018年 / 34卷 / 08期
关键词：
Co-injection molding; Flow characteristics; Injection molding; Polymer melt;
D O I：
10.16865/j.cnki.1000-7555.2018.08.017
中图分类号：
学科分类号：
摘要：
Due to the lack of experimental methods, there is little direct and reliable experimental basis for the theoretical study of melt flow characteristics in the process of co-injection molding. In this study, filling processes of PP melt of co-injection molding were directly observed by self-developed visual experimental device. In order to analyze the filling characteristics, results of the co-injection molding were compared with that of injection molding process in metal cavity with the same structure and molding parameters. The results show that the flow pattern of melt filling in co-injection molding can be different from that of conventional injection molding. The melt temperature is the main factor that affects the characteristics of co-injection molding, and the different temperature of the melt will show different forming characteristics at different injection rates. © 2018, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：102 / 106and112
相关论文
共 15 条
  • [1] Shen K.Z., Hu W.J., Xiang Z.S., Et al., Structure and property of biaxially self-reinforced polypropylene sheet prepared in uniaxial elongational stress field, Polymer Materials Science & Engineering, 18, 1, pp. 145-148, (2002)
  • [2] Yokoi H., Hayasaki S., Takahashi H., Visual analysis of plasticating process in injection molding machine by using a glass inserted heating cylinder, PPS Fifth Annual Meeting, (1989)
  • [3] Jiang K.Y., Yokoi H., Experiment study on filling imbalance phenomenon of melt front during injection molding process, Journal of Mechanical Engineering, 45, 2, pp. 294-300, (2009)
  • [4] Ji Z., Visualization research on polymer filling flow charateristics of ultrasonic assisted injection molding, (2014)
  • [5] Llinca F., Hetu J.F., Derdouri A., Numerical investigation of the flow front behavior in the co-injection moulding process, Int. J. Numer. Methods Fluids, 50, pp. 1445-1460, (2006)
  • [6] Yokoi H., Hayasaki S., Takahashi H., Visual analysis of plasticating process in injection molding machine by using a glass inserted heating cylinder, PPS Fifth Annual Meeting, (1989)
  • [7] Jiang K.Y., Tian J.N., Wang M.J., Et al., Influence of scale effect on filling behavior of injection molding by visualization method, Int. Polym. Process., 27, pp. 25-29, (2013)
  • [8] Jiang K.Y., Ji Z., Li H., Et al., Polymer flow behavior analysis based on physical visualization technology for ultrasonic vibration-assisted injection molding, Int. Polym. Process., 32, pp. 290-297, (2017)
  • [9] Dubbeldam J.L.A., Molenaar J., Dynamics of the spurt instability in polymer extrusion, J. Non-Newtonian Fluid Mech., 112, pp. 217-235, (2003)
  • [10] Jiang K.Y., Duan F., Tian J.N., Et al., Effect factors of pem conductivity measurement by impedance spectroscopy, Polymer Materials Science & Engineering, 28, 11, pp. 129-132, (2012)
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