Poudres et mélanges de poudres pour la fonctionnalisation et l’imprégnation de textiles à sec : formulation de poudres bifonctionnelles

Abstract : This original work deals with the functionalization of textile fire retardant used in transport and the building focused on the development of fire retardant powders while studying the interactions of three criteria: the formulation, process and product. The main line of this study is the understanding and quantification of the flame retardant properties of the textile, which can be influenced by the choice of formulation or mixing process. The identification of needs, i.e. the realization of a finished fire retardant, the design of defined particle size mixtures, which flow easily and possess low sensitivity to inflammation, allowed to propose and consider various formulations. This project methodology is a good example of the combination between two approaches: the product engineering and a safety approach. The final selection of mixtures will be based on the results of a comprehensive technical analysis. The experimental work allows us to select the polymer and the flame retardant at a concentration of 40% in order to obtain in an internal mixer of bifunctional particles meet the specifications set out in this study. Unlike conventional mixtures by inversion or high speed, the grains prepared by Hot-Melt granulation have enhanced mechanical linkages. This result seems to be due to the good affinity and good particle size ratio between the components and a good morphology to the formation of such structures. This manufacturing method also overcomes two obstacles; the preparation of a bifunctional powder with high content of flame retardant and the realization of a mixture which does not demix under the action of the electric field of the DPreg impregnation process
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https://hal.univ-lorraine.fr/tel-01754624
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Submitted on : Friday, March 30, 2018 - 9:55:21 AM
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Karine Groos-Gérardin. Poudres et mélanges de poudres pour la fonctionnalisation et l’imprégnation de textiles à sec : formulation de poudres bifonctionnelles. Autre. Université de Lorraine, 2015. Français. ⟨NNT : 2015LORR0166⟩. ⟨tel-01754624⟩

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