Reduced percolation threshold of conductive adhesive through nonuniform filler localization: Monte Carlo simulation and experimental study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F21%3A63542698" target="_blank" >RIV/70883521:28610/21:63542698 - isvavai.cz</a>

Alternative codes found

RIV/70883521:28110/21:63542698

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0266353821003201" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0266353821003201</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compscitech.2021.108964" target="_blank" >10.1016/j.compscitech.2021.108964</a>

Result language

angličtina

Original language name

Reduced percolation threshold of conductive adhesive through nonuniform filler localization: Monte Carlo simulation and experimental study

Original language description

Adhesive nickel based polymer composites were investigated experimentally and by computational modelling with respect to optimization of electrical and mechanical properties. Utilization of polymer blends with an optimized combination of epoxy resin (ER) and polydimethylsiloxane (PDMS) resulted in a reduced electrical percolation threshold (EPT) from 7.9 up to 3.7 vol % of Ni and increased the direct current (DC) conductivity of the composites by 7 orders of magnitude. At the same time, adhesion of the composites was enhanced by 20% and impact strength by 75% due to the PDMS addition. The observed effect of the EPT reduction is determined by the preferred localization of conductive Ni particles near the ER phase, specifically on the ER/PDMS interface. Prior to the composite preparation, the polymer composites were simulated by the Monte Carlo method and were evaluated by two independent methods: i) the growth of the conductive networks was examined by the size of aggregates via aggregation number (script in Python) ii) the conductivity of the polymer composites was calculated via finite element method (FEM, Digimat-FE 6.1.1). The computational simulations correlated well with the experimentally determined EPT and conductivity of the polymer composites.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

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

2021

Confidentiality

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

Name of the periodical

Composites Science and Technology

ISSN

0266-3538

e-ISSN

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Volume of the periodical

214

Issue of the periodical within the volume

Neuveden

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

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UT code for WoS article

000693454800001

EID of the result in the Scopus database

2-s2.0-85111559638