Mechanical Properties of Glass Microsphere/Epoxy Foams Modified by Carbon Nanotubes and Nanosilica

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F16%3AN0000030" target="_blank" >RIV/26232511:_____/16:N0000030 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Mechanical Properties of Glass Microsphere/Epoxy Foams Modified by Carbon Nanotubes and Nanosilica

Popis výsledku v původním jazyce

Highly effective blast-absorbing materials are demanded by the industry, as they can improve blast resistance of structures. There are two ways of improving the blast resistance of a structure – either to enhance the performance of the structural materials, or to use sacrificial cladding structures with the core made of the highly blast-absorbing material. Presented study deals with the influence of nanoparticle addition on physico-mechanical properties of a foam composite designed for blast energy absorbing applications. Specific porous lightweight foam with high volume fraction of microspheres was prepared and modified by 1 to 5 vol. parts of multi-wall carbon nanotubes or nanosilica. Two types of microspheres with different wall thickness and strength were used. Nanoparticles dispersion quality was evaluated in relation to the mixing procedure using scanning electron microscope observation. Compressive and flexural strength tests were conducted at quasi-static load. The mixtures containing nanosilica exhibited an increasing trend in both flexural and compressive strength with increasing nanoparticle content up to 4 vol. parts. The addition of carbon nanotubes also increased flexural strength (again up to 4 vol. parts, crossing this concentration, a significant drop was observed), whereas the compressive strength was less affected. Nanoparticle modification was more effective in the foams with microspheres with higher thickness and thus strength. The test results showed that the properties of glass/epoxy foams can be tailored by adding nanoscale fillers.

Název v anglickém jazyce

Mechanical Properties of Glass Microsphere/Epoxy Foams Modified by Carbon Nanotubes and Nanosilica

Popis výsledku anglicky

Highly effective blast-absorbing materials are demanded by the industry, as they can improve blast resistance of structures. There are two ways of improving the blast resistance of a structure – either to enhance the performance of the structural materials, or to use sacrificial cladding structures with the core made of the highly blast-absorbing material. Presented study deals with the influence of nanoparticle addition on physico-mechanical properties of a foam composite designed for blast energy absorbing applications. Specific porous lightweight foam with high volume fraction of microspheres was prepared and modified by 1 to 5 vol. parts of multi-wall carbon nanotubes or nanosilica. Two types of microspheres with different wall thickness and strength were used. Nanoparticles dispersion quality was evaluated in relation to the mixing procedure using scanning electron microscope observation. Compressive and flexural strength tests were conducted at quasi-static load. The mixtures containing nanosilica exhibited an increasing trend in both flexural and compressive strength with increasing nanoparticle content up to 4 vol. parts. The addition of carbon nanotubes also increased flexural strength (again up to 4 vol. parts, crossing this concentration, a significant drop was observed), whereas the compressive strength was less affected. Nanoparticle modification was more effective in the foams with microspheres with higher thickness and thus strength. The test results showed that the properties of glass/epoxy foams can be tailored by adding nanoscale fillers.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-22945S" target="_blank" >GA13-22945S: Výzkum pokročilých konstrukcí pro absorpci rázové energie a jejich chování při vysokých rychlostech deformace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Scientific and Industrial Research

ISSN

0022-4456

e-ISSN

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Svazek periodika

2016

Číslo periodika v rámci svazku

75

Stát vydavatele periodika

IN - Indická republika

Počet stran výsledku

6

Strana od-do

365-370

Kód UT WoS článku

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EID výsledku v databázi Scopus

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