The effect of catalyst addition on the structure, electrical and mechanical properties of the cross-linked polyurethane/carbon nanotube composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10371405" target="_blank" >RIV/00216208:11320/17:10371405 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.compscitech.2017.03.034" target="_blank" >http://dx.doi.org/10.1016/j.compscitech.2017.03.034</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compscitech.2017.03.034" target="_blank" >10.1016/j.compscitech.2017.03.034</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of catalyst addition on the structure, electrical and mechanical properties of the cross-linked polyurethane/carbon nanotube composites

Popis výsledku v původním jazyce

Uniform distribution of filler particles in a polymer matrix is crucial to the improvement of properties of polymer composites. In this work, we have shown that control of the polymerization rate by addition of the catalyst (Fe(acac)3) hinders filler aggregation and enhances electrical and mechanical properties of polyurethane/nanotube composites. Thus, a percolation threshold value of 0.02 wt % obtained for the composites with the catalyst was much lower than the value of 0.65 wt % for the composites without the catalyst. Moreover, the electrical conductivity of the catalytically prepared composites at a nanotube content of 3 wt % was two orders of magnitude higher than that of the non-catalytically prepared ones. The tensile strength of both types of composites showed an improvement at lower filler concentrations, however, the increase of filler content led to deterioration of the mechanical properties for the non catalytically prepared composites. Structure of the composites was investigated by means of optical and scanning electron microscopy. Additionally, the current-voltage characteristics (J-E) of the composites were studied.

Název v anglickém jazyce

The effect of catalyst addition on the structure, electrical and mechanical properties of the cross-linked polyurethane/carbon nanotube composites

Popis výsledku anglicky

Uniform distribution of filler particles in a polymer matrix is crucial to the improvement of properties of polymer composites. In this work, we have shown that control of the polymerization rate by addition of the catalyst (Fe(acac)3) hinders filler aggregation and enhances electrical and mechanical properties of polyurethane/nanotube composites. Thus, a percolation threshold value of 0.02 wt % obtained for the composites with the catalyst was much lower than the value of 0.65 wt % for the composites without the catalyst. Moreover, the electrical conductivity of the catalytically prepared composites at a nanotube content of 3 wt % was two orders of magnitude higher than that of the non-catalytically prepared ones. The tensile strength of both types of composites showed an improvement at lower filler concentrations, however, the increase of filler content led to deterioration of the mechanical properties for the non catalytically prepared composites. Structure of the composites was investigated by means of optical and scanning electron microscopy. Additionally, the current-voltage characteristics (J-E) of the composites were studied.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Composites Science and Technology

ISSN

0266-3538

e-ISSN

—

Svazek periodika

144

Číslo periodika v rámci svazku

26. května

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

208-214

Kód UT WoS článku

000401205900025

EID výsledku v databázi Scopus

2-s2.0-85016140315