Enhanced electrical conductivity of immiscible blends filled with nickel particles

Kód výsledku v IS VaVaI

RIV/70883521:28110/19:63524305 - isvavai.cz

Nalezeny alternativní kódy

RIV/70883521:28610/19:63524305

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced electrical conductivity of immiscible blends filled with nickel particles

Popis výsledku v původním jazyce

Conductive polymer composites can be used in widespread electrical and electronic applications such as antistatic materials, conductive glues and lightweight shielding materials. The DC conductivity of polymer blends composed of epoxy resin (ER) (diglycidyl ether bisphenol A cured by diethylenetriamine) and vinyl-terminated polydimethylsiloxane (PDMS), where a conductive nickel particles (Ni) had been preferentially blended into the ER, were investigated to establish the percolation characteristics. The blends exhibited reduced percolation thresholds and enhanced conductivities above that of the individually Ni filled ER and· PDMS. The percolation threshold of the ER/PDMS/Ni composites was about 3.7 vol. % nickel particles, where the DC conductivity changed by 7 orders of magnitude. This threshold is at a significantly lower nickel content and thereby weight than the individually filled ER (7.9 vol. %) or PDMS. At a nickel particles loading of 4 vol. %, the ER/PDMS/Ni composite exhibits a DC conductivity which is approximately 8 orders of magnitude lower than the ER/Ni system, at the same level of incorporated nickel particles. Prior to actual preparation of polymer composites, the behaviour was simulated using MonteCarlo method. lt was found, that at low PDMS concentrations, the simulations were quite precise, however at higher content of PDMS, the real material was performing better than the simulation. The performance of composites as a conductive nickel glue WqS tested by lap shear test and it was found, that composites with 30 vol. % of PDMS perform better adhesion to the metal plates than composites without PDMS .

Název v anglickém jazyce

Enhanced electrical conductivity of immiscible blends filled with nickel particles

Popis výsledku anglicky

Conductive polymer composites can be used in widespread electrical and electronic applications such as antistatic materials, conductive glues and lightweight shielding materials. The DC conductivity of polymer blends composed of epoxy resin (ER) (diglycidyl ether bisphenol A cured by diethylenetriamine) and vinyl-terminated polydimethylsiloxane (PDMS), where a conductive nickel particles (Ni) had been preferentially blended into the ER, were investigated to establish the percolation characteristics. The blends exhibited reduced percolation thresholds and enhanced conductivities above that of the individually Ni filled ER and· PDMS. The percolation threshold of the ER/PDMS/Ni composites was about 3.7 vol. % nickel particles, where the DC conductivity changed by 7 orders of magnitude. This threshold is at a significantly lower nickel content and thereby weight than the individually filled ER (7.9 vol. %) or PDMS. At a nickel particles loading of 4 vol. %, the ER/PDMS/Ni composite exhibits a DC conductivity which is approximately 8 orders of magnitude lower than the ER/Ni system, at the same level of incorporated nickel particles. Prior to actual preparation of polymer composites, the behaviour was simulated using MonteCarlo method. lt was found, that at low PDMS concentrations, the simulations were quite precise, however at higher content of PDMS, the real material was performing better than the simulation. The performance of composites as a conductive nickel glue WqS tested by lap shear test and it was found, that composites with 30 vol. % of PDMS perform better adhesion to the metal plates than composites without PDMS .

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

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

Projekt

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

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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