Effect of graphite fillers on electrical and thermal conductivity in epoxy-based composites: Percolation behavior and analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00618850" target="_blank" >RIV/68378271:_____/25:00618850 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10501549

Výsledek na webu

<a href="https://doi.org/10.1016/j.materresbull.2024.113186" target="_blank" >https://doi.org/10.1016/j.materresbull.2024.113186</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.materresbull.2024.113186" target="_blank" >10.1016/j.materresbull.2024.113186</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of graphite fillers on electrical and thermal conductivity in epoxy-based composites: Percolation behavior and analysis

Popis výsledku v původním jazyce

This work investigated a method for producing epoxy-based composites using various graphite fillers, such as natural, synthetic, and thermally expanded graphite. The study aimed to determine the impact of the filler type, size, and volume fraction on the composites’ thermal and electrical conductivity. Results indicate that the percolation model accurately represents electrical and thermal conductivity behavior, with graphite fillers forming conductive clusters in the polymer matrix. The percolation threshold for electrical conductivity varies between 2.8 and 8.5 vol.%, while for thermal conductivity, it ranges from 5.0 to 18.0 vol.%. This is due to both the electron transfer tunneling effect and the necessity of higher filler content to facilitating effective phonon transport. Understanding percolation behavior facilitates the prediction and optimization of composites with specific electrical and thermal properties for diverse applications.

Název v anglickém jazyce

Effect of graphite fillers on electrical and thermal conductivity in epoxy-based composites: Percolation behavior and analysis

Popis výsledku anglicky

This work investigated a method for producing epoxy-based composites using various graphite fillers, such as natural, synthetic, and thermally expanded graphite. The study aimed to determine the impact of the filler type, size, and volume fraction on the composites’ thermal and electrical conductivity. Results indicate that the percolation model accurately represents electrical and thermal conductivity behavior, with graphite fillers forming conductive clusters in the polymer matrix. The percolation threshold for electrical conductivity varies between 2.8 and 8.5 vol.%, while for thermal conductivity, it ranges from 5.0 to 18.0 vol.%. This is due to both the electron transfer tunneling effect and the necessity of higher filler content to facilitating effective phonon transport. Understanding percolation behavior facilitates the prediction and optimization of composites with specific electrical and thermal properties for diverse applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

Materials Research Bulletin

ISSN

0025-5408

e-ISSN

1873-4227

Svazek periodika

183

Číslo periodika v rámci svazku

Mar

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

113186

Kód UT WoS článku

001359590000001

EID výsledku v databázi Scopus

2-s2.0-85209083113