Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (2): 85-88.

• Materials Science & Technology • Previous Articles     Next Articles

Melt Filling Ability and Cavity Pressure Under Pulsed VibrationField

Wu Hong-wu1  Zhang Shao-dan1  XuHai-hang2   

  1. 1. Key Laboratory of Polymer Processing Engineering of the Ministrγof Education , South China Univ. of Tech.Guangzhou 510640 , Guangdong , China;2. Dept. of Electromechanical Engineering , Panyu Polytechnic , Guangzhou 511400 , Guangdong , China
  • Received:2005-11-14 Online:2007-02-25 Published:2007-02-25
  • Contact: 吴宏武(1965-)，男，教授，主要从事高分子材料成型加工研究. E-mail:mmhwwu@scut. edu.cn
  • About author:吴宏武(1965-)，男，教授，主要从事高分子材料成型加工研究.
  • Supported by:

    教育部新世纪优秀人才支持计划项目( NCET-04-0820)

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Abstract:

By considering the fact that the cavity of the spiral flow mold is both long and narrow , the effect of the pulsed vibration field on the filling ability of the melt in the molding process was investigated by measuring the product length. The cavity pressure in the molding and packing processes was then measured and analyzed using a high-sensitivity melt pressure sensor and a data collection system. Experimental results indicate that the pulsed vi-bration field helps to improve the flow length as well as the filling pressure of the melt in the cavity. Analytical re-sults show that , in a pulsed vibration field , the melt viscosity and the pressure consumption decrease , while the fil-ling ability of the melt and the effective packing time increase. All these factors contribute a lot to the compression of the product.

Key words: pulsed vibration field, dynamic injection molding, filling ability, cavity pressure