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High-performance composite with negative Poisson’s ratio

Published online by Cambridge University Press:  11 September 2017

Fernanda Steffens ,
Fernando Ribeiro Oliveira ,
Carlos Mota  and
Raul Fangueiro
Fernanda Steffens*
Affiliation:
Department of Engineering, Textile Engineering, Federal University of Santa Catarina, Blumenau 89065-300, Brazil
Fernando Ribeiro Oliveira
Affiliation:
Department of Engineering, Textile Engineering, Federal University of Santa Catarina, Blumenau 89065-300, Brazil
Carlos Mota
Affiliation:
Center for Textile Science and Technology, School of Engineering, University of Minho, Guimarães 4800-058, Portugal
Raul Fangueiro
Affiliation:
Center for Textile Science and Technology, School of Engineering, University of Minho, Guimarães 4800-058, Portugal
*
a)Address all correspondence to this author. e-mail: fernanda.steffens@ufsc.br
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Abstract

This article presents innovative work undertaken to evaluate the auxetic composite materials developed using weft-knitted fabrics with negative Poisson’s ratio (NPR) produced from high-tenacity filaments of para-aramid (p-AR) and polyamide. The aim of this study is to develop polymeric composite materials reinforced with auxetic knitted fabrics and to evaluate the degree of transference of the auxetic behavior from the fibrous reinforcement to the composite produced. The results show that the NPR values remained in the composites. Regardless of the type of resin used, either epoxy or polyester, the highest values were obtained for samples produced with p-AR auxetic knitted fabrics. The NPR composites developed within this work present great potential for applications in industrial areas, including personal protection products, such as bulletproof vests, helmets, knee, and elbow protectors, and in all other areas where energy absorption is a key factor to be considered.

Keywords

auxetic structureshigh-performance fibersknitted fabricnegative Poisson’s ratiocomposites
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 18 , 28 September 2017 , pp. 3477 - 3484
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Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Linda S. Schadler

References

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