Superior microwave absorbing cement-based composite using graphite flake / MnFe2O4 spinel ferrite nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F25%3AN0000002" target="_blank" >RIV/26232511:_____/25:N0000002 - isvavai.cz</a>

Výsledek na webu

<a href="https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4676105" target="_blank" >https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4676105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2025.140600" target="_blank" >10.1016/j.conbuildmat.2025.140600</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Superior microwave absorbing cement-based composite using graphite flake / MnFe2O4 spinel ferrite nanoparticles

Popis výsledku v původním jazyce

In this study, graphite flake-cement (GFC) composite and MnFe2O4-cement (MFC) nanocomposite with desirable porous structures were developed. The microwave absorption performance of developed cement composites was investigated in the X-band frequency (8.2–12.4 GHz). The developed GFC composite displayed a minimum reflection loss of −19.3 dB (corresponding to 98.826 % electromagnetic wave absorption) at 9.7 GHz with a thickness of 7 mm and an effective absorption bandwidth (EAB) (at which the reflection loss reaches −10 dB) of 0.8 GHz. The MFC composite attained the minimum reflection loss of −44.5 dB (corresponding to 99.996 % EM wave absorption) at 11.7 GHz with a thickness of 7 mm and EAB of 1.3 GHz. The study suggests that adding conductive graphite flakes or MnFe2O4 spinel ferrite magnetic fillers into cement can provide efficient microwave absorption characteristics. The electromagnetic parameters, such as complex permittivity and permeability, dielectric loss, and magnetic loss, were also analyzed. In addition, the results of this study implied that the graphite flakes or MnFe2O4 nanoparticle-incorporated cement composite might be used to create buildings with greater resistance to electromagnetic radiation.

Název v anglickém jazyce

Superior microwave absorbing cement-based composite using graphite flake / MnFe2O4 spinel ferrite nanoparticles

Popis výsledku anglicky

In this study, graphite flake-cement (GFC) composite and MnFe2O4-cement (MFC) nanocomposite with desirable porous structures were developed. The microwave absorption performance of developed cement composites was investigated in the X-band frequency (8.2–12.4 GHz). The developed GFC composite displayed a minimum reflection loss of −19.3 dB (corresponding to 98.826 % electromagnetic wave absorption) at 9.7 GHz with a thickness of 7 mm and an effective absorption bandwidth (EAB) (at which the reflection loss reaches −10 dB) of 0.8 GHz. The MFC composite attained the minimum reflection loss of −44.5 dB (corresponding to 99.996 % EM wave absorption) at 11.7 GHz with a thickness of 7 mm and EAB of 1.3 GHz. The study suggests that adding conductive graphite flakes or MnFe2O4 spinel ferrite magnetic fillers into cement can provide efficient microwave absorption characteristics. The electromagnetic parameters, such as complex permittivity and permeability, dielectric loss, and magnetic loss, were also analyzed. In addition, the results of this study implied that the graphite flakes or MnFe2O4 nanoparticle-incorporated cement composite might be used to create buildings with greater resistance to electromagnetic radiation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20100 - Civil engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Construction and Building Materials

ISSN

0950-0618

e-ISSN

1879-0526

Svazek periodika

—

Číslo periodika v rámci svazku

471

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

001442881800001

EID výsledku v databázi Scopus

—