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Title: Integrating tough Antheraea pernyi silk and strong carbon fibres for impact-critical structural composites

Abstract

High stiffness and strength carbon fibres are commonly used to reinforce epoxy-resin composites. While wild Antheraea pernyi silk fibres exhibit high toughness originating from their α-helix/random coil conformation structures and their micro-fibre morphology, their insufficient strength and stiffness hinders them from being used in similar structural composites. In this work, we use interply hybridization of silk and carbon fibres to reinforce epoxy-matrix composites. With increased carbon fibre content, the quasi-static tensile/flexural stiffness and strength increases following the rule of mixtures while more silk fibre acts to increase ductility and impact strength. This results in a composite comprising equal volumes of carbon and silk fibres achieving an impact strength of 98 kJ m-2, which is twice that of purely carbon-fibre reinforced composites (44 kJ m-2). This work shows tough natural silk fibres and strong synthetic fibres can be successfully integrated into epoxy-resin composites for tailored mechanical properties.

Authors:
; ; ORCiD logo; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NSFC)
OSTI Identifier:
1619652
Alternate Identifier(s):
OSTI ID: 1572046
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Nature Communications
Additional Journal Information:
Journal Name: Nature Communications Journal Volume: 10 Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United Kingdom
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Yang, Kang, Guan, Juan, Numata, Keiji, Wu, Change, Wu, Sujun, Shao, Zhengzhong, and Ritchie, Robert O. Integrating tough Antheraea pernyi silk and strong carbon fibres for impact-critical structural composites. United Kingdom: N. p., 2019. Web. https://doi.org/10.1038/s41467-019-11520-2.
Yang, Kang, Guan, Juan, Numata, Keiji, Wu, Change, Wu, Sujun, Shao, Zhengzhong, & Ritchie, Robert O. Integrating tough Antheraea pernyi silk and strong carbon fibres for impact-critical structural composites. United Kingdom. https://doi.org/10.1038/s41467-019-11520-2
Yang, Kang, Guan, Juan, Numata, Keiji, Wu, Change, Wu, Sujun, Shao, Zhengzhong, and Ritchie, Robert O. Thu . "Integrating tough Antheraea pernyi silk and strong carbon fibres for impact-critical structural composites". United Kingdom. https://doi.org/10.1038/s41467-019-11520-2.
@article{osti_1619652,
title = {Integrating tough Antheraea pernyi silk and strong carbon fibres for impact-critical structural composites},
author = {Yang, Kang and Guan, Juan and Numata, Keiji and Wu, Change and Wu, Sujun and Shao, Zhengzhong and Ritchie, Robert O.},
abstractNote = {High stiffness and strength carbon fibres are commonly used to reinforce epoxy-resin composites. While wild Antheraea pernyi silk fibres exhibit high toughness originating from their α-helix/random coil conformation structures and their micro-fibre morphology, their insufficient strength and stiffness hinders them from being used in similar structural composites. In this work, we use interply hybridization of silk and carbon fibres to reinforce epoxy-matrix composites. With increased carbon fibre content, the quasi-static tensile/flexural stiffness and strength increases following the rule of mixtures while more silk fibre acts to increase ductility and impact strength. This results in a composite comprising equal volumes of carbon and silk fibres achieving an impact strength of 98 kJ m-2, which is twice that of purely carbon-fibre reinforced composites (44 kJ m-2). This work shows tough natural silk fibres and strong synthetic fibres can be successfully integrated into epoxy-resin composites for tailored mechanical properties.},
doi = {10.1038/s41467-019-11520-2},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United Kingdom},
year = {2019},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1038/s41467-019-11520-2

Citation Metrics:
Cited by: 5 works
Citation information provided by
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    Works referencing / citing this record:

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