Synthesis of open-cell ceramic foam derived from geopolymer precursor via replica technique

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F17%3A43949827" target="_blank" >RIV/49777513:23640/17:43949827 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.matlet.2017.08.081" target="_blank" >http://dx.doi.org/10.1016/j.matlet.2017.08.081</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matlet.2017.08.081" target="_blank" >10.1016/j.matlet.2017.08.081</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis of open-cell ceramic foam derived from geopolymer precursor via replica technique

Popis výsledku v původním jazyce

This paper describes a facile and effective method for fabrication of open-cell ceramic foam derived from geopolymer precursor through replica technique. The polyurethane sponge method was applied using geopolymer mixture based on powder mixture of metakaolin/precipitated silica, potassium silica solution and fine chamotte filler. Accelerated solidification step at 60 °C for 30 min was performed to obtain dense structure with a good adhesion to the polymeric sponge. The effect of thermal treatment on mechanical and structural behavior of synthesized foams was investigated. X-ray diffraction (XRD) analysis indicated that no substantial differences in the content of crystalline Leucite - Potassium Aluminum Silicate phases appeared between thermally treated samples at 1100 °C, 1200 °C and 1300 °C. It has been revealed that compression strength of ceramic foams reached 0.85 ± 0.11 MPa after the samples had been treated at 1300°C. In addition, scanning electron microscopy (SEM) and X-ray micro computed tomography (µ-CT) confirmed uniform interconnected cellular structure with pore sizes between 1 – 2 mm resulting in an open porosity (εo) of 78.88 vol%.

Název v anglickém jazyce

Synthesis of open-cell ceramic foam derived from geopolymer precursor via replica technique

Popis výsledku anglicky

This paper describes a facile and effective method for fabrication of open-cell ceramic foam derived from geopolymer precursor through replica technique. The polyurethane sponge method was applied using geopolymer mixture based on powder mixture of metakaolin/precipitated silica, potassium silica solution and fine chamotte filler. Accelerated solidification step at 60 °C for 30 min was performed to obtain dense structure with a good adhesion to the polymeric sponge. The effect of thermal treatment on mechanical and structural behavior of synthesized foams was investigated. X-ray diffraction (XRD) analysis indicated that no substantial differences in the content of crystalline Leucite - Potassium Aluminum Silicate phases appeared between thermally treated samples at 1100 °C, 1200 °C and 1300 °C. It has been revealed that compression strength of ceramic foams reached 0.85 ± 0.11 MPa after the samples had been treated at 1300°C. In addition, scanning electron microscopy (SEM) and X-ray micro computed tomography (µ-CT) confirmed uniform interconnected cellular structure with pore sizes between 1 – 2 mm resulting in an open porosity (εo) of 78.88 vol%.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

<a href="/cs/project/LO1402" target="_blank" >LO1402: CENTEM+</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MATERIALS LETTERS

ISSN

0167-577X

e-ISSN

—

Svazek periodika

209

Číslo periodika v rámci svazku

15 December 2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

497-500

Kód UT WoS článku

000413124300126

EID výsledku v databázi Scopus

2-s2.0-85028061601