Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix

Z. Xu; R. Tao; S. Teixeira De Freitas

Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

Aiming to aid the sustainable transition to fossil fuel-free epoxy materials and enhance the toughness of bio-based epoxies, here we integrate an overlapping curl microstructure consisting of coiling fiber with sacrificial bonds and hidden lengths into a bio-based epoxy matrix. Inspired by natural material, where exceptional properties are achieved at low environmental cost, the microstructure mimics the molecular structures of spider silk, known for its exceptional fracture resistance. The 3D-printed overlapping curl shows a saw-tooth mechanical response with continuous load-carrying ability thanks to the break of sacrificial bonds and unfolding of the hidden lengths. By embedding the overlapping curl into the compact-tension configuration of the bio-based epoxy, an extrinsic toughening mechanism is triggered as the hidden length unfolds. Experimental results show that a single-sided overlapping curl structure is able to improve the toughness of bio-based epoxy by 19%.

Original language	English
Title of host publication	Proceedings of the 21st European Conference on Composite Materials
Subtitle of host publication	Volume 3 - Material and Structural Behavior – Simulation & Testing
Editors	Christophe Binetury, Frédéric Jacquemin
Place of Publication	France
Publisher	The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes.
Pages	1711-1717
Number of pages	7
Volume	3
ISBN (Electronic)	978-2-912985-01-9
Publication status	Published - 2024
Event	21st European Conference on Composite Materials - Cité des Congrès de Nantes, Nantes, France Duration: 2 Jul 2024 → 5 Jul 2024 Conference number: 21 https://eccm21.org/

Conference

Conference	21st European Conference on Composite Materials
Abbreviated title	ECCM21
Country/Territory	France
City	Nantes
Period	2/07/24 → 5/07/24
Internet address	https://eccm21.org/

Keywords

Bio-inspired
3D printing
sacrificial bonds and hidden lengths
toughness

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Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy MatrixFinal published version, 0.99 MBLicence: CC BY-NC

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Xu, Z., Tao, R., & Teixeira De Freitas, S. (2024). Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix. In C. Binetury, & F. Jacquemin (Eds.), Proceedings of the 21st European Conference on Composite Materials: Volume 3 - Material and Structural Behavior – Simulation & Testing (Vol. 3, pp. 1711-1717). The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes..

Xu, Z. ; Tao, R. ; Teixeira De Freitas, S. / Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix. Proceedings of the 21st European Conference on Composite Materials: Volume 3 - Material and Structural Behavior – Simulation & Testing. editor / Christophe Binetury ; Frédéric Jacquemin. Vol. 3 France : The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes., 2024. pp. 1711-1717

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title = "Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix",

abstract = "Aiming to aid the sustainable transition to fossil fuel-free epoxy materials and enhance the toughness of bio-based epoxies, here we integrate an overlapping curl microstructure consisting of coiling fiber with sacrificial bonds and hidden lengths into a bio-based epoxy matrix. Inspired by natural material, where exceptional properties are achieved at low environmental cost, the microstructure mimics the molecular structures of spider silk, known for its exceptional fracture resistance. The 3D-printed overlapping curl shows a saw-tooth mechanical response with continuous load-carrying ability thanks to the break of sacrificial bonds and unfolding of the hidden lengths. By embedding the overlapping curl into the compact-tension configuration of the bio-based epoxy, an extrinsic toughening mechanism is triggered as the hidden length unfolds. Experimental results show that a single-sided overlapping curl structure is able to improve the toughness of bio-based epoxy by 19%.",

keywords = "Bio-inspired, 3D printing, sacrificial bonds and hidden lengths, toughness",

author = "Z. Xu and R. Tao and {Teixeira De Freitas}, S.",

year = "2024",

language = "English",

volume = "3",

pages = "1711--1717",

editor = "Christophe Binetury and Fr{\'e}d{\'e}ric Jacquemin",

booktitle = "Proceedings of the 21st European Conference on Composite Materials",

publisher = "The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes.",

note = "21st European Conference on Composite Materials, ECCM21 ; Conference date: 02-07-2024 Through 05-07-2024",

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Xu, Z , Tao, R & Teixeira De Freitas, S 2024, Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix. in C Binetury & F Jacquemin (eds), Proceedings of the 21st European Conference on Composite Materials: Volume 3 - Material and Structural Behavior – Simulation & Testing. vol. 3, The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes., France, pp. 1711-1717, 21st European Conference on Composite Materials, Nantes, France, 2/07/24.

Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix. / Xu, Z.; Tao, R.; Teixeira De Freitas, S.
Proceedings of the 21st European Conference on Composite Materials: Volume 3 - Material and Structural Behavior – Simulation & Testing. ed. / Christophe Binetury; Frédéric Jacquemin. Vol. 3 France: The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes., 2024. p. 1711-1717.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix

AU - Xu, Z.

AU - Tao, R.

AU - Teixeira De Freitas, S.

N1 - Conference code: 21

PY - 2024

Y1 - 2024

N2 - Aiming to aid the sustainable transition to fossil fuel-free epoxy materials and enhance the toughness of bio-based epoxies, here we integrate an overlapping curl microstructure consisting of coiling fiber with sacrificial bonds and hidden lengths into a bio-based epoxy matrix. Inspired by natural material, where exceptional properties are achieved at low environmental cost, the microstructure mimics the molecular structures of spider silk, known for its exceptional fracture resistance. The 3D-printed overlapping curl shows a saw-tooth mechanical response with continuous load-carrying ability thanks to the break of sacrificial bonds and unfolding of the hidden lengths. By embedding the overlapping curl into the compact-tension configuration of the bio-based epoxy, an extrinsic toughening mechanism is triggered as the hidden length unfolds. Experimental results show that a single-sided overlapping curl structure is able to improve the toughness of bio-based epoxy by 19%.

AB - Aiming to aid the sustainable transition to fossil fuel-free epoxy materials and enhance the toughness of bio-based epoxies, here we integrate an overlapping curl microstructure consisting of coiling fiber with sacrificial bonds and hidden lengths into a bio-based epoxy matrix. Inspired by natural material, where exceptional properties are achieved at low environmental cost, the microstructure mimics the molecular structures of spider silk, known for its exceptional fracture resistance. The 3D-printed overlapping curl shows a saw-tooth mechanical response with continuous load-carrying ability thanks to the break of sacrificial bonds and unfolding of the hidden lengths. By embedding the overlapping curl into the compact-tension configuration of the bio-based epoxy, an extrinsic toughening mechanism is triggered as the hidden length unfolds. Experimental results show that a single-sided overlapping curl structure is able to improve the toughness of bio-based epoxy by 19%.

KW - Bio-inspired

KW - 3D printing

KW - sacrificial bonds and hidden lengths

KW - toughness

UR - https://doi.org/10.60691/yj56-np80

M3 - Conference contribution

VL - 3

SP - 1711

EP - 1717

BT - Proceedings of the 21st European Conference on Composite Materials

A2 - Binetury, Christophe

A2 - Jacquemin, Frédéric

PB - The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes.

CY - France

T2 - 21st European Conference on Composite Materials

Y2 - 2 July 2024 through 5 July 2024

ER -

Xu Z , Tao R , Teixeira De Freitas S. Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix. In Binetury C, Jacquemin F, editors, Proceedings of the 21st European Conference on Composite Materials: Volume 3 - Material and Structural Behavior – Simulation & Testing. Vol. 3. France: The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes. 2024. p. 1711-1717

Bio-Inspired 3d-Printed Microstructures For Toughening Bio-Based Epoxy Matrix

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