Enhanced electrical conductivity of immiscible blends filled with nickel particles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F19%3A63524305" target="_blank" >RIV/70883521:28110/19:63524305 - isvavai.cz</a>

Alternative codes found

RIV/70883521:28610/19:63524305

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Enhanced electrical conductivity of immiscible blends filled with nickel particles

Original language description

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 .

Czech name

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Czech description

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Type

O - Miscellaneous

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2019

Confidentiality

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