MOC-Diatomite Composites Filled with Multi-Walled Carbon Nanotubes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00351126" target="_blank" >RIV/68407700:21110/21:00351126 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/21:43922334

Výsledek na webu

<a href="https://doi.org/10.3390/ma14164576" target="_blank" >https://doi.org/10.3390/ma14164576</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma14164576" target="_blank" >10.3390/ma14164576</a>

Jazyk výsledku

angličtina

Název v původním jazyce

MOC-Diatomite Composites Filled with Multi-Walled Carbon Nanotubes

Popis výsledku v původním jazyce

The studies aimed at magnesium oxychloride cement (MOC) composites became recently fairly widespread, because of MOC’s excellent mechanical properties and environmental sustainability. Numerous fillers, admixtures and nano-dopants were studied in order to improve the overall performance of MOC-based derivatives. Some of them exhibited specific flaws, such as a tendency to aggregate, increase in porosity, aeration of the composite matrix, depreciation in the water resistance and mechanical strength, etc. In the manuscript, MOC-based composites doped by multi-walled carbon nanotubes (MWCNTs) are designed and tested. To modify the final properties of composites, diatomite was admixed as partial substitution of MgO, which was used in the composition of the researched material in excess, i.e. the majority of MgO constituted part of MOC and the rest served as fine filler. The composites were subjected to the broad experimental campaign that covered SEM, EDS, HR-TEM, XRD, OM and STA-MS. For 28-days hardened samples, macro- and microstructural parameters, mechanical properties, hygric and thermal characteristics were experimentally assessed. The incorporation of MWCNTs and diatomite led to the significant enhancement of composites’ compactness, mechanical strength and stiffness, and reduction of water absorption and rate of water imbibition. The thermal properties of the enriched MOC com-posites yielded interesting values and provided information for future modification of thermal performance of MOC composites with respect to their specific use in practice, e.g. in passive moderation of indoor climate. The combination of MWCNTs and diatomite represents a valuable modification of the MOC matrix and can be further exploited in the design and development of advanced building materials and components.

Název v anglickém jazyce

MOC-Diatomite Composites Filled with Multi-Walled Carbon Nanotubes

Popis výsledku anglicky

The studies aimed at magnesium oxychloride cement (MOC) composites became recently fairly widespread, because of MOC’s excellent mechanical properties and environmental sustainability. Numerous fillers, admixtures and nano-dopants were studied in order to improve the overall performance of MOC-based derivatives. Some of them exhibited specific flaws, such as a tendency to aggregate, increase in porosity, aeration of the composite matrix, depreciation in the water resistance and mechanical strength, etc. In the manuscript, MOC-based composites doped by multi-walled carbon nanotubes (MWCNTs) are designed and tested. To modify the final properties of composites, diatomite was admixed as partial substitution of MgO, which was used in the composition of the researched material in excess, i.e. the majority of MgO constituted part of MOC and the rest served as fine filler. The composites were subjected to the broad experimental campaign that covered SEM, EDS, HR-TEM, XRD, OM and STA-MS. For 28-days hardened samples, macro- and microstructural parameters, mechanical properties, hygric and thermal characteristics were experimentally assessed. The incorporation of MWCNTs and diatomite led to the significant enhancement of composites’ compactness, mechanical strength and stiffness, and reduction of water absorption and rate of water imbibition. The thermal properties of the enriched MOC com-posites yielded interesting values and provided information for future modification of thermal performance of MOC composites with respect to their specific use in practice, e.g. in passive moderation of indoor climate. The combination of MWCNTs and diatomite represents a valuable modification of the MOC matrix and can be further exploited in the design and development of advanced building materials and components.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA20-01866S" target="_blank" >GA20-01866S: Vysocehodnotné kompozity obsahující vrstevnaté nanomateriály</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Svazek periodika

14

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000689450000001

EID výsledku v databázi Scopus

2-s2.0-85113715013