Engineering magnetic type radio-absorbers based on composites with a dual-phase polymer matrix

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F22%3A63554678" target="_blank" >RIV/70883521:28110/22:63554678 - isvavai.cz</a>

Alternative codes found

RIV/70883521:28610/22:63554678

Result on the web

<a href="https://link.springer.com/article/10.1007/s13391-022-00351-x" target="_blank" >https://link.springer.com/article/10.1007/s13391-022-00351-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s13391-022-00351-x" target="_blank" >10.1007/s13391-022-00351-x</a>

Result language

angličtina

Original language name

Engineering magnetic type radio-absorbers based on composites with a dual-phase polymer matrix

Original language description

This work is focused on the optimization of electromagnetic and mechanical properties of magnetic polymer composites for EMI applications as radio absorbers (RAs). Polymer composites with a dual-phase polymer matrix, vinyl-terminated polydimethylsiloxane (PDMS) in epoxy (ER), were investigated for fabricating highlyfilled manganese zinc ferrite (MnZn) and carbonyl iron (CI) composites with respect to radio-absorption and mechanical properties. The dielectric and magnetic properties of the composites were determined by the type, concentration as well as the polymer matrix composition. Increase of the filler and the PDMS concentration leads to an increase in magnetic losses due to a decrease in the demagnetizing field. The electromagnetic properties of the composites were evaluated in the RF band using the impedance method (1 MHz–3 GHz). Based on the complex permittivity (ε*) and the complex permeability (μ*), the reflection loss RL (dB) of single-layer metal-backed RAs were calculated. The RAs with a MnZn ferrite demonstrated a larger bandwidth to thickness ratio in comparison with the CI-based RAs due to a proper ratio between ε* and μ* which leads to the better impedance matching conditions. According to the mechanical analyses (DMA, Charpy impact strength) the significant increase of stiffness up to 125% and the impact strength up to 150% was achieved due to the optimal composition of the polymer matrix and the filler.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/LTAUSA19066" target="_blank" >LTAUSA19066: A study of polymeric memristors based on methacrylate polymers with pendant carbazole moieties</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

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

Name of the periodical

Electronic Materials Letters

ISSN

1738-8090

e-ISSN

2093-6788

Volume of the periodical

18

Issue of the periodical within the volume

Neuveden

Country of publishing house

KR - KOREA, REPUBLIC OF

Number of pages

16

Pages from-to

"345–360"

UT code for WoS article

000807918800001

EID of the result in the Scopus database

2-s2.0-85131570834