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Croissance de nanotubes de carbone sur des fibres de carbone : application aux matériaux composites

Abstract : The research presented in this work aims to develop the oxyacetylene flame method for the Carbon Nanotubes (CNT) synthesis at the Laboratory of Physics and Mechanics of Textiles. The simplicity and the degree of innovation of this process make of it a serious candidate for manufacturing a pilot in order to produce new kind of tridimensional material made of CNT having grew on carbon fibres. This work consisted of:-Make a bibliographic study,-Establish a proof of concept of the growth of CNT,-Design and manufacture a device allowing process control,-Setup the process of growth on the fibres,-Identify the main parameters influencing CNT quality and quantity,- Characterize CNT,-Assume the CNT growth on carbon fibers,-Integrate these multidimensional materials into an organic matrix to realize structural composite materials,-Characterize these materials,-Describe and explain the growth mechanism in the flame.First, we focused our work on the fibres chemical treatment before flame exposition to evaluate the NTC growth conditions by varying notably, the fibres exposition temperature and the quality of the catalysts. After, the NTC syntheses on carbon fibres (CF) was done. The multidimensional product was characterized par various examinations and analyses. Composite materials were molded with epoxy resin to evaluate mechanical properties of NTC-FC. Young’s modulus was increased and tensile strength at break decreased. Transverse and longitudinal electrical properties were increased by 500 to 800 % respectively. Finally, we proposed NTC growth mechanisms. They are directly linked to the chemical and physical catalyst particles properties.
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Submitted on : Monday, November 27, 2017 - 9:26:14 AM
Last modification on : Wednesday, February 24, 2021 - 9:48:02 AM


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  • HAL Id : tel-01648731, version 1



Fabrice Laurent. Croissance de nanotubes de carbone sur des fibres de carbone : application aux matériaux composites. Autre. Université de Haute Alsace - Mulhouse, 2016. Français. ⟨NNT : 2016MULH7632⟩. ⟨tel-01648731⟩



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