Capasso, Ilaria (2017) Design and Synthesis of Hybrid Ceramic Foams with Tailored Porosity. [Tesi di dottorato]

PhD thesis Ilaria CAPASSO.pdf

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Item Type: Tesi di dottorato
Lingua: English
Title: Design and Synthesis of Hybrid Ceramic Foams with Tailored Porosity
Date: 10 April 2017
Number of Pages: 156
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria Chimica, dei Materiali e della Produzione Industriale
Dottorato: Ingegneria dei prodotti e dei processi industriali
Ciclo di dottorato: 29
Coordinatore del Corso di dottorato:
Liguori, BarbaraUNSPECIFIED
Caputo, DomenicoUNSPECIFIED
Verdolotti, LetiziaUNSPECIFIED
Lavorgna, MarinoUNSPECIFIED
Date: 10 April 2017
Number of Pages: 156
Uncontrolled Keywords: Ceramics, Geopolymeric foams, hierarchical porosity
Settori scientifico-disciplinari del MIUR: Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 - Scienza e tecnologia dei materiali
Date Deposited: 25 Apr 2017 17:38
Last Modified: 08 Mar 2018 13:40
DOI: 10.6093/UNINA/FEDOA/11779


Alkali activated ceramic foams have been produced by using metakaolin and/or diatomite as aluminosilicate source, an aqueous sodium silicate solution as alkali activator and Na2SiF6 as a catalyst that promotes the gelification of the entire system. Two different techniques of direct foaming have been coupled, one based on chemical reactions with gas production and the other one based on a mechanical foaming. Then, other levels of hierarchical porosity (nanometric and macrometric scale) have been added to the produced expanded ceramic systems. This approach allows to tailor the chemical–physical properties and density of the resulted hybrid foams. The produced foams have been mechanically, chemically, physically and morphologically characterized. Moreover, their acoustic and thermal properties, in terms of thermal stability and conductivity, and also their fire behavior have been investigated.


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