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Licensed Unlicensed Requires Authentication Published online by De Gruyter August 5, 2022

Molding process and properties of polyimide-fiber-fabric-reinforced polyether ether ketone composites

Jindong Zhang ORCID logo, Wencai Wang, Gang Liu, Rui Cao, Guofeng Tian, Jianan Yao, Chunhai Chen and Ming Wang

Abstract

As the most outstanding type of organic fiber in terms of the comprehensive performance, polyimide fiber is more conducive to reduce the composites weight than inorganic fibers, such as carbon fiber or glass fiber. A polyimide-fabric-reinforced polyether ether ketone (PEEK) composite was prepared by a hot-press molding process. The melt flow rate of the PEEK resin was measured to reveal its rheological behavior and guide the selection of the molding process parameters of the composite. The tensile properties of the composites were determined. The results revealed that the rheological properties of the resin manifested through the melt viscosity, which was more sensitive to pressure changes than to temperature changes. The tensile properties of the composites were affected by two competitive mechanisms. First, increases of molding temperature and duration time could facilitate the infiltration of the resin into the fiber fabric and improve the internal quality and tensile properties of the composite. Second, an excessively high molding temperature and long duration time could decrease the strength of the polyimide fiber, thereby reducing the tensile properties of the composites.


Corresponding authors: Jianan Yao and Chunhai Chen, Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China, E-mail: ,

Funding source: Research Startup Program of Donghua University

Award Identifier / Grant number: 285-07-005702

Acknowledgements

Thanks are due to Dr. Lei Liu and Dr. Li Wei for their help with the measurement and characterization.

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

  2. Research funding: The authors are grateful for the financial support from Research Startup Program of Donghua University (285-07-005702).

  3. Conflict of interest statement: The authors declare that they have no known competing financial interests or personal relationships that could influence the work reported in this article.

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Supplementary Material

The online version of this article offers supplementary material (https://doi.org/10.1515/polyeng-2022-0064).


Received: 2022-04-14
Accepted: 2022-06-03
Published Online: 2022-08-05

© 2022 Walter de Gruyter GmbH, Berlin/Boston

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