On the application of strong thermoplastic–thermoset interactions for developing advanced aerospace-composite joints

Dong Quan; Yannan Ma; Dongsheng Yue; Jiaming Liu; Jun Xing; Mingming Zhang; René Alderliesten; Guoqun Zhao

doi:10.1016/j.tws.2023.110671

On the application of strong thermoplastic–thermoset interactions for developing advanced aerospace-composite joints

Dong Quan, Yannan Ma, Dongsheng Yue, Jiaming Liu, Jun Xing, Mingming Zhang, René Alderliesten, Guoqun Zhao^*

^*Corresponding author for this work

Structural Integrity & Composites

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

In this study, an aerospace thermosetting composite was co-curing joined by Polyether-ether-ketone (PEEK) and Polyethylenimine (PEI) films, with an aim of developing advanced composite joints. The semi-crystalline PEEK films were surface activated upon a UV-irradiation technique to obtain a strong film–composite interface, while the amorphous PEI films could be directly used. The fracture behaviour of the composite joints was evaluated and compared with benchmark aerospace adhesive joints. The experimental results proved remarkable mode-I and mode-II fracture resistance of the PEEK co-cured joints at 22 °C and 130 °C, while the PEI co-cured joints exhibited excellent mode-I fracture resistance at 22 °C and mode-II fracture resistance in both testing temperature cases. Extensive elongation, tearing and fracture of the PEEK/PEI plastics were proved to be the main mechanisms for toughness enhancement. Overall, this work had successfully demonstrated the effectiveness of developing advanced composite joints via a co-curing process using high-performance thermoplastic films.

Original language	English
Article number	110671
Number of pages	11
Journal	Thin-Walled Structures
Volume	186
DOIs	https://doi.org/10.1016/j.tws.2023.110671
Publication status	Published - 2023

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Funding

The authors would like to acknowledge the financial support from Natural Science Foundation of Shandong Province, China (Grant No.: 2022HWYQ-013), the key research and development program of Shandong Province, China (Grant No. 2021ZLGX01), and Qilu Young Scholar Program of Shandong University, China (Grant No.: 31370082163164). Dong Quan is grateful to the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska–Curie grant agreement No. 842467.

Keywords

Co-curing joining
Composite joint
Fracture behaviour
Thermoplastic–thermoset interaction

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10.1016/j.tws.2023.110671

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title = "On the application of strong thermoplastic–thermoset interactions for developing advanced aerospace-composite joints",

abstract = "In this study, an aerospace thermosetting composite was co-curing joined by Polyether-ether-ketone (PEEK) and Polyethylenimine (PEI) films, with an aim of developing advanced composite joints. The semi-crystalline PEEK films were surface activated upon a UV-irradiation technique to obtain a strong film–composite interface, while the amorphous PEI films could be directly used. The fracture behaviour of the composite joints was evaluated and compared with benchmark aerospace adhesive joints. The experimental results proved remarkable mode-I and mode-II fracture resistance of the PEEK co-cured joints at 22 °C and 130 °C, while the PEI co-cured joints exhibited excellent mode-I fracture resistance at 22 °C and mode-II fracture resistance in both testing temperature cases. Extensive elongation, tearing and fracture of the PEEK/PEI plastics were proved to be the main mechanisms for toughness enhancement. Overall, this work had successfully demonstrated the effectiveness of developing advanced composite joints via a co-curing process using high-performance thermoplastic films.",

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note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. ",

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AU - Xing, Jun

AU - Zhang, Mingming

AU - Alderliesten, René

AU - Zhao, Guoqun

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PY - 2023

Y1 - 2023

N2 - In this study, an aerospace thermosetting composite was co-curing joined by Polyether-ether-ketone (PEEK) and Polyethylenimine (PEI) films, with an aim of developing advanced composite joints. The semi-crystalline PEEK films were surface activated upon a UV-irradiation technique to obtain a strong film–composite interface, while the amorphous PEI films could be directly used. The fracture behaviour of the composite joints was evaluated and compared with benchmark aerospace adhesive joints. The experimental results proved remarkable mode-I and mode-II fracture resistance of the PEEK co-cured joints at 22 °C and 130 °C, while the PEI co-cured joints exhibited excellent mode-I fracture resistance at 22 °C and mode-II fracture resistance in both testing temperature cases. Extensive elongation, tearing and fracture of the PEEK/PEI plastics were proved to be the main mechanisms for toughness enhancement. Overall, this work had successfully demonstrated the effectiveness of developing advanced composite joints via a co-curing process using high-performance thermoplastic films.

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On the application of strong thermoplastic–thermoset interactions for developing advanced aerospace-composite joints

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