Cure kinetics of carbon nanotube/tetrafunctional epoxy nanocomposites by isothermal differential scanning calorimetry

Xie, Hongfeng; Liu, Binghua; Zhou, Yuan; Shen, Jianyi; Cheng, Rongshi

doi:10.1002/polb.20220

Cited by 139 publications

(122 citation statements)

References 31 publications

(50 reference statements)

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“…Many researchers have paid attention to this topic, demonstrating that no simple and univocal cure behaviour trend can be encountered when nanoparticles are mixed with a thermoset [8][9][10][11]. In particular, most of the studies were performed on epoxy systems, whereas according to our investigation, less attention has been focused on polyester-based nanocomposites.…”

Section: Introductionmentioning

confidence: 87%

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

Monti

Puglia

Natali

et al. 2011

Composites Science and Technology

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Please cite this article as: Monti, M., Puglia, D., Natali, M., Torre, L., Kenny, J.M., Effect of carbon nanofibers on the cure kinetics of unsaturated polyester resin: thermal and chemorheological modelling, Composites Science and Technology (2011), doi: 10.1016/j.compscitech.2011 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractWe report the study of the effects of carbon nanofibers (CNFs) on the cure kinetics and on the chemorheology of unsaturated polyester resins (UP). Two main experimental techniques were utilized: differential scanning calorimetry and rheometry. Isothermal and dynamic tests were performed on the neat polyester resin and on two nanocomposite systems, with 0.5 and 1.0 wt% of CNFs. Furthermore, a TGA study of the selected systems at different isothermal temperatures was performed to evaluate the styrene consumption and related loss rate during the curing process. Subsequently, a phenomenological model (autocatalytic approach) was applied to the experimental data, both in isothermal and dynamic conditions. In the case of dynamic curing, the evidence of multiple peaks in the heat flow curves was studied through the deconvolution of the overall reaction thermogram in single reaction steps. An empirical rheological model coupled with the reaction kinetics was successfully applied to simulate the viscosity changes of the UP matrix. Experimental and modelling results demonstrate the presence of a delay effect of the CNFs on the cure of the UP resin matrix.

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Section: Introductionmentioning

confidence: 87%

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

Monti

Puglia

Natali

et al. 2011

Composites Science and Technology

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“…Relevant characteristics are continuously investigated in the area of RAM: durability, low density, low cost, performance on a wide range of frequencies and also the ease of application 7,8,13,14 . Epoxy resins are the most important thermosets, widely used as adhesives, coatings, and composite materials [15][16][17][18] . In recent years, the use of carbon nanotubes (CNTs) in epoxy resin/carbon nanotube composites has attracted a great deal of attention [19][20][21][22][23][24][25][26] .…”

Section: Introductionmentioning

confidence: 99%

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

et al. 2013

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Nanostructured polymer composites have opened up new perspectives for multifunctional materials. In particular, carbon nanotubes (CNTs) present potential applications in order to improve mechanical and electrical performance in composites with aerospace application. The combination of epoxy resin with multiwalled carbon nanotubes results in a new functional material with enhanced electromagnetic properties. The objective of this work was the processing of radar absorbing materials based on formulations containing different quantities of carbon nanotubes in an epoxy resin matrix. To reach this objective the adequate concentration of CNTs in the resin matrix was determined. The processed structures were characterized by scanning electron microscopy, rheology, thermal and reflectivity in the frequency range of 8.2 to 12.4 GHz analyses. The microwave attenuation was up to 99.7%, using only 0.5% (w/w) of CNT, showing that these materials present advantages in performance associated with low additive concentrations.

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“…Differential scanning calorimetry (DSC) may be considered as one of the most interesting techniques for kinetic analysis of cure reactions of thermosetting systems [13][14][15]. Numerous studies on cure kinetics of epoxy in presence of carbon-based nanofillers have been investigated [16][17][18][19][20][21][22][23][24][25]. Recently, Allaoui and El Bounia [16] had reviewed the influence of CNTs on the cure kinetics of epoxy resin.…”

mentioning

confidence: 99%

Effects of graphene oxides on the cure behaviors of a tetrafunctional epoxy resin

Qiu¹,

Wang²,

Wang³

et al. 2011

Express Polym. Lett.

137

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The influence of graphene oxides (GOs) on the cure behavior and thermal stability of a tetrafunctional tetraglycidyl-4,4’-diaminodiphenylmethane cured with 4,4’-diaminodiphenylsulfone was investigated by using dynamic differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The dynamic DSC results showed that the initial reaction temperature and exothermal peak temperature decreased with the increase of GO contents. Furthermore, the addition of GO increased the enthalpy of epoxy cure reaction. Results from activation energy method showed that activation energies of GO/epoxy nanocomposites greatly decreased with the GO content in the latter stage, indicating that GOs significantly hindered the occurrence of vitrification. The oxygen functionalities, such as hydroxyl and carboxyl groups, on the surface of GOs acted as catalysts and facilitated the curing reaction and the catalytic effect increased with the GO contents. TGA results revealed that the addition of GOs decreased the thermal stability of epoxy

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Cure kinetics of carbon nanotube/tetrafunctional epoxy nanocomposites by isothermal differential scanning calorimetry

Cited by 139 publications

References 31 publications

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

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

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

Effects of graphene oxides on the cure behaviors of a tetrafunctional epoxy resin

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