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Formulation de pâtes céramiques innovantes contenant des composés organiques biosourcés

Abstract : The aim of this work is focused on the elaboration of new alumina suspensions with biopolymer additives and rheological properties adapted to the tape casting process. The suspensions used in the tape casting process are basically composed of a ceramic powder, a solvent, a dispersant, a binder and a plasticizer. These additives are usually polymers coming from the petrochemical sector which show risks for the operator health or the environment (in particular with organic solvents). Thus, natural polymers extracted from plants were identified as promising candidates in order to substitute the classical organic additives. Then, the study of the interactions between different organic additives with alumina led to a specific protocol for the formulation of aqueous alumina suspensions with these bio-polymers. Then, mechanical properties of the green and sintered tapes were evaluated in relation with the nature of bio-polymer additives. The obtained densities are close to the values reported in the litterature
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Jeremy Marie. Formulation de pâtes céramiques innovantes contenant des composés organiques biosourcés. Autre. Université de Limoges, 2018. Français. ⟨NNT : 2018LIMO0114⟩. ⟨tel-03081160⟩

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