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Polymers 2018, 10(10), 1139;

Thermo-Mechanical Characterisations of Flax Fibre and Thermoplastic Resin Composites during Manufacturing

School of Mechanical Engineering, Dalian University of Technology, Dalian 116000, China
ENSAIT, GEMTEX, University of Lille, F-59056 Roubaix, France
Author to whom correspondence should be addressed.
Received: 23 September 2018 / Revised: 4 October 2018 / Accepted: 10 October 2018 / Published: 12 October 2018
(This article belongs to the Special Issue Polymer Processing for Enhancing Textile Application)
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The flax fibre reinforced composites with advanced structure, which can be regarded as recyclable parts, are potential and promising materials in the automobile industry. During their manufacturing, the reinforcements or prepregs should be performed to the desired shape beforehand. Mechanical behaviours accordingly play an important role during this process. However, this preforming process is usually under high temperatures, thus, the mechanical behaviours could be modified under this state. Especially for reinforcements produced by flax yarns, has barely been studied. To fill this gap, in this paper the thermos-mechanical characterization of Flax/Polyamide12 (PA12) commingled yarn and prepreg woven fabric is analysed using tensile and in-plane shearing tests under different temperatures and tensile speeds. The results conclusively show that strength can be improved by increasing the temperature below the PA12 melting value on woven fabrics, which is inverse tendency for single yarn. Moreover, increasing tensile speed could increase the strength of the single yarn and fabric. This reveals that the PA12 fluidity has great influence on tensile behaviour. The characterisation results would be employed as prescriptive recommendations in the process of manufacturing flax fibre-reinforced composite parts. View Full-Text
Keywords: textile composites; natural fibres; thermoplastic; thermo-mechanical behaviour textile composites; natural fibres; thermoplastic; thermo-mechanical behaviour

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Xiao, S.; Wang, P.; Soulat, D.; Gao, H. Thermo-Mechanical Characterisations of Flax Fibre and Thermoplastic Resin Composites during Manufacturing. Polymers 2018, 10, 1139.

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