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Effect of fiber content on the layer structure formation of fibers inside injection-molded products using short glass fiber-reinforced materials

  • Senji Hamanaka EMAIL logo , Chisato Nonomura , Thanh Binh Nguyen Thi and Atsushi Yokoyama
Published/Copyright: February 25, 2021
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 41 Issue 3

Abstract

This study aims to clarify the relationship between the layer structure transition of fibers caused by the change in the flow field and the thermal properties and fiber interaction when the glass fiber content is changed. Polyamide 6 samples with different short glass fiber contents were prepared, and changes in layer structure during the flow process of injection molding were compared using X-ray computed tomography. An injection-molding simulation was performed to compare the changes in the layer structure of fibers during the flow process, and the temperature distribution and shear rate distribution were obtained by numerical analysis. Furthermore, the effect of fiber interaction on the layer structure transition of fibers was considered using a relaxation function composed of the fiber content, fiber shape factor, and strain rate.

Keywords: fiber interaction; fiber orientation; injection molding; polyamide 6; X-ray CT
Corresponding author: Atsushi Yokoyama, Department of Advanced Fibro-Science, Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto606-8585, Japan, E-mail:

Acknowledgments

We would like to thank T. Wakano and Y. Tanida who belong to the Kyoto Prefecture Textile Machinery & Metals Promotion Center for the assistance with the experiments and for useful discussions.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-10-06
Accepted: 2020-12-20
Published Online: 2021-02-25
Published in Print: 2021-03-26

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Material properties
  3. Comparative study of conventional and microwave heating of polyacrylonitrile-based fibres
  4. Effects of Ru catalyst changes by atmospheric exposure days on the interfacial and impact properties of glass fiber/p-DCPD composites
  5. Rubber-to-steel adhesives based on natural rubber grafted with poly(acetoacetoxyethyl methacrylate)
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  9. Morphology optimization of poly(ethylene terephthalate)/polyamide blends compatibilized via extension-dominated twin-screw extrusion
  10. Engineering and processing
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https://doi.org/10.1515/polyeng-2020-0272
Keywords for this article
fiber interaction; fiber orientation; injection molding; polyamide 6; X-ray CT

Articles in the same Issue

  1. Frontmatter
  2. Material properties
  3. Comparative study of conventional and microwave heating of polyacrylonitrile-based fibres
  4. Effects of Ru catalyst changes by atmospheric exposure days on the interfacial and impact properties of glass fiber/p-DCPD composites
  5. Rubber-to-steel adhesives based on natural rubber grafted with poly(acetoacetoxyethyl methacrylate)
  6. Preparation and assembly
  7. Preparation and swelling behavior of end-linked hydrogels prepared from linear poly(ethylene glycol) and dendrimer-star polymers
  8. Imidazolium functionalized polymers for effective electrochemical reduction of CO2
  9. Morphology optimization of poly(ethylene terephthalate)/polyamide blends compatibilized via extension-dominated twin-screw extrusion
  10. Engineering and processing
  11. Removal of 17β-estradiol from aqueous systems with hydrophobic microspheres
  12. Effect of fiber content on the layer structure formation of fibers inside injection-molded products using short glass fiber-reinforced materials
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