Processing of Silicas Formed by Slip Casting

Sabrina Arcaro; João Batista Rodrigues Neto; Francielly Roussenq Cesconeto; Jaime Domingos Teixeira; Fabiano Raupp-Pereira; Antonio Pedro Novaes de Oliveira

doi:10.4028/www.scientific.net/MSF.775-776.525

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HomeMaterials Science ForumMaterials Science Forum Vols. 775-776Processing of Silicas Formed by Slip Casting

Processing of Silicas Formed by Slip Casting

Abstract:

In this work suspensions containing natural amorphous silica fibers (NASF), amorphous silica gel and nanometric colloidal amorphous silica were prepared and rheologically analyzed. The suspensions were prepared by varying the volume percentage of solids between 22 and 32%, ammonium polyacrylate (APA), as dispersant, from 0 to 5% and polyvinyl alcohol (PVA), as binder, between 1 and 3.5%. The mixtures were obtained in a propeller mechanical mixer and formed by slip casting. The results of rheological characterization indicated that the suspensions with 30% solids, 4% dispersant and 3% binder were those that showed a stable rheological system and suitable for processing by slip casting.

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Materials Science Forum (Volumes 775-776)

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525-528

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.775-776.525

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Online since:

January 2014

Authors:

Sabrina Arcaro, João Batista Rodrigues Neto, Francielly Roussenq Cesconeto, Jaime Domingos Teixeira, Fabiano Raupp-Pereira, Antonio Pedro Novaes de Oliveira

Keywords:

Amorphous Silica, Rheology of Ceramic Suspensions, Slip Casting

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