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Theses

Opalisation du verre sodocalcique par feeder à coloration dans le respect d'une politique de développement durable

Abstract : The main goal of the present work is to achieve hollow-ware soda-lime glass opalization, through the forehearth color (FHC) technology. The results are suggesting two solutions to get rid of the usual opacifying particles: fluorides crystals. These are known to be dangerous and highly corrosive. Soda-lime glass opalization, induced by phosphorus addition, consists in NaCaPO4 precipitation. However, this phase appears only after specific heat treatments, which are found to be hardly compatible with the FHC technology. Low solubility oxides SnO2, ZrO2 and ZrSiO4, are finally chosen as a second option for opalization. Tin oxide is more precisely studied, as it has the lowest solubility limit. The influence of glass composition on the oxides solubilization is investigated. Tin multivalent property is also characterized using in situ electrochemical methods. Opacifying compounds (glass frits) containing SnO2 are finally developed, in agreement with all industrial requirements and avoiding the use of fluorides. Compositions of these compounds and semi-industrial process parameters are optimized with two distinct designs of experiments.
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https://hal.univ-lorraine.fr/tel-01749202
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Submitted on : Thursday, March 29, 2018 - 12:09:26 PM
Last modification on : Friday, May 21, 2021 - 3:21:25 PM

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  • HAL Id : tel-01749202, version 1

Citation

Pauline Gateau. Opalisation du verre sodocalcique par feeder à coloration dans le respect d'une politique de développement durable. Chimie. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0069⟩. ⟨tel-01749202⟩

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