Thermal curing behavior of MWCNT modified vinyl ester‐polyester resin suspensions prepared with 3‐roll milling technique

Abstract

This study aims to investigate the curing behavior of a vinyl ester-polyester resin suspensions containing 0.3 wt % of multiwalled carbon nanotubes with and without amine functional groups (MWCNTs and MWCNT-NH 2 ). For this purpose, various analytical techniques, including Differential Scanning Calorimetry (DSC), Fourier infrared spectroscopy (FTIR), Raman Spectroscopy, and Thermo Gravimetric Analyzer (TGA) were conducted. The resin suspensions with carbon nanotubes (CNTs) were prepared via 3-roll milling technique. DSC measurements showed that resin suspensions containing CNTs exhibited higher heat of cure (Q), besides lower activation energy (E a ) when compared with neat resin. For the sake of simplicity of interpretation, FTIR investigations were performed on neat vinyl ester resin suspensions containing the same amount of CNTs as resin. As a result, the individual fractional conversion rates of styrene and vinyl ester were interestingly found to be altered dependent on MWCNTs and MWCNT-NH 2 . The findings obtained from RS measurements of the cured samples are highly proportional to those obtained from FTIR measurements. TGA measurements revealed that CNT modified nanocomposites have higher activation energy of degradation (E d ) compared with the cured polymer. The findings obtained revealed that CNTs with and without amine functional groups alter overall thermal curing response of the surrounding matrix resin, which may probably impart distinctive characteristics to mechanical behavior of the corresponding nanocomposites achieved.

Mechanochemistry of fullerenes and related materials

“…Homogeneously dispersed CNTs-polymer nanocomposites such as SWNTs-PLL (poly(L-lysine)), 229a,b SWNTs-PS (polystyrene), 229c MWNTs-PP (polypropylene), 230 MWNTs-PE (polyethylene), 231 MWNTs-PETI-330, 232 CNTs-POM (polyoxymethylene), 233 MWNTs-epoxy resin, 234 MWNTs-vinyl ester-polyester resin, 235 MWNTs-PET (poly(ethylene terephthalate)), 236 MWNTs-pCBT (polybutylene terephthalate) 237 and SWNTs-polyurethane composites 238 have been obtained by incorporation of CNTs into the polymer matrices using mechanical milling methods. The mixer mill, pan-type mill, 3-roll mill, cryogenic mill and planetary ball mill have been used.…”

Effect of carbon nanofibers on the cure kinetics of unsaturated polyester resin: Thermal and chemorheological modelling

“…Very limited information is instead available on the effect of carbon-based nanofillers on the cure reaction of UP resins, although the employment of this kind of fillers in an UP matrix has great potential on modifying the electrical, thermal and mechanical behaviour of the unfilled systems [20][21][22][23][24][25][26][27][28][29][30][31].…”

The synergistic impacts of hybrid nanofillers of graphene nanoplatelets/carbon nanotubes on curing behavior of an epoxy‐vinyl ester interpenetrating polymer network nanocomposite coating

“…25,[84][85][86][87] On the other hand, it depends on the formed interphase among the IPN components as a continuous phase and the nanofillers as a discontinuous phase. Although several investigations about the curing behavior of epoxy and vinyl ester individually filled by carbon-based nanoparticles were reported, 44,[88][89][90][91][92][93][94][95][96][97][98] reports concerning the cure kinetics of epoxy (EP)/vinyl ester (VE) IPNs nanocomposites based on carbon and noncarbon based nanofillers are few. To our knowledge, this is one of the first works to report the parameters of curing kinetics of a nanocomposite based on the EP/VE IPN system by simultaneously incorporating CNTs and GnPs as a nanofillers mixture.…”