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WANG Guan, WANG Xulin, KOU Linyuan, YI Jie, LIU Zhiwen, XU Congchang, LI Luoxing. Optimization of PP/EPDM Composite Injection Molding Process Based on Multi-factor Interaction[J]. Materials and Mechanical Engineering, 2018, 42(3): 87-94. DOI: 10.11973/jxgccl201803016
Citation: WANG Guan, WANG Xulin, KOU Linyuan, YI Jie, LIU Zhiwen, XU Congchang, LI Luoxing. Optimization of PP/EPDM Composite Injection Molding Process Based on Multi-factor Interaction[J]. Materials and Mechanical Engineering, 2018, 42(3): 87-94. DOI: 10.11973/jxgccl201803016
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Optimization of PP/EPDM Composite Injection Molding Process Based on Multi-factor Interaction

  • 1. College of Mechanical Engineering, Ningxia University, Yinchuan 750021, China;

  • 2. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082;

  • 3. College of Mechanical Engineering, Dalian University of Technology, Dalian 116023, China

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  • Received Date: January 16, 2017
  • Revised Date: January 29, 2018
    Graphical Abstract
    • Abstract
  • The simulation model of injection molding of automotive rocker panel end cap polypropylene/ethylene propylene diene monomer (PP/EPDM) composite was established by Moldflow software. Main factors and interaction factors affecting warping, volume shrinkage, surface sink marks of the workpiece were filtered by factorial design. The optimal injection molding process was simulated by orthogonal test design method and verified. The results show that the main factors affecting the target values were melt temperature, mold temperature, injection time, packing time and packing pressure. The interaction factors were melt temperature and mold temperature, injection time and packing time. The optimal injection molding process was as follows:melt temperature of 220℃, mold temperature of 40℃, injection time of 2 s, packing time of 25 s and packing pressure of 60 MPa. Comparing with the original process, the maximum warpage decreased by 33.21%, volume shrinkage was reduced by 39.61%, and the surface quality was improved significantly.
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    • References (16)
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