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Large-scale formation of shish-kebab in water-assisted injection-moulded high-density polyethylene with a high-molecular weight

  • H Yuan
  • Y Pan
  • X LiuEmail author
Article
  • 10 Downloads

Abstract

To promote flow-induced orientation and reserve the formation of the shish-kebab structure, a modified injection-moulding technology named water-assisted injection moulding (WAIM), was applied to provide twice the shear flow and a rapid cooling rate on high-molecular weight high-density polyethylene (HDPE) melt in a mould cavity. Large-scale distribution of highly oriented shish-kebab was successfully achieved in a WAIM sample with a high-molecular weight. More importantly, the high-orientation degree of lamellae (larger than 0.4) in the thickness direction for a high-molecular weight WAIM sample is >60%, which is much more than a conventional injection-moulded sample (15%). This work provides a new insight to achieve injection-moulded products with enhanced oriented structures.

Keywords

Orientation high-density polyethylene shish-kebab water-assisted injection moulding 

Notes

Acknowledgements

This work was supported by the Opening Project of Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices as well as by the HASTIT of Henan Province, China.

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.National Engineering Research Center for Advanced Polymer Processing TechnologyCollege of Materials Science and Engineering, Zhengzhou UniversityZhengzhouPeople’s Republic of China
  2. 2.Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and DevicesEast China University of TechnologyNanchangPeople’s Republic of China

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