Characterization of epoxy functionalized graphite nanoparticles and the physical properties of epoxy matrix nanocomposites

The development of aerospace and automotive industries requests lightweight, high-paformance materials, and polymer nanocomposites are ideal candidates in this case, which is shown by the increasingly more publications in this research field over the past two decades. However, the performance of nanocompositenot only depend on the properties of their individual constituents, but on their morphology and surface characteristics of fillers as well. Selections of nanofille~ geometries, e.g. particulate, fibrous or layered have a tremendous influence on the properties of nanocomposites and their processing methods. In this paper, we review the chronological works performed in the field of polymer nanocomposites, in particular epoxy nanocomposites reinforced with layered fillers, such as clay and gitiphene. Surprisingly layered fillers are commercially available and more costeffective than nanoparticles and carbon nanofibres, and these make them to the most extensively studied fillers that can be geared toward future applications, particularly in large-scale polymer nanocomposite production.

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“…Two landmark studies include: (1) [96] NIA NIA t4. 9 Miller et al [97] 1 wt?? 52 % t4.10 Rafiee et al [48] 0.1 Wto?…”

Section: Prospect Of Applicationsmentioning

confidence: 99%

From clay to graphene for polymer nanocomposites—a survey

et al. 2014

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“…However, several studies have focused on improving the dispersion and interface interaction of graphene in a polymeric matrix using functionalised graphene. Novel method for functionalization of GP has been presented by Miller [96] using a coupling agent to form covalent bonding between fillers and soft matrix (0.78 GPa Young's modulus), resulting in 50% modulus improvement at 1 wt % filler fraction. Chiang and Hsu [97] have improved the fire resistance of epoxy/GP nanocomposite following a similar method.…”

Section: Graphene As Green Corrosion Inhibitor In Anticorrosion Coatingmentioning

confidence: 99%

Emerging Corrosion Inhibitors for Interfacial Coating

2017

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Abstract:Corrosion is a deterioration of a metal due to reaction with environment. The use of corrosion inhibitors is one of the most effective ways of protecting metal surfaces against corrosion. Their effectiveness is related to the chemical composition, their molecular structures and affinities for adsorption on the metal surface. This review focuses on the potential of ionic liquid, polyionic liquid (PIL) and graphene as promising corrosion inhibitors in emerging coatings due to their remarkable properties and various embedment or fabrication strategies. The review begins with a precise description of the synthesis, characterization and structure-property-performance relationship of such inhibitors for anti-corrosion coatings. It establishes a platform for the formation of new generation of PIL based coatings and shows that PIL corrosion inhibitors with various heteroatoms in different form can be employed for corrosion protection with higher barrier properties and protection of metal surface. However, such study is still in its infancy and there is significant scope to further develop new structures of PIL based corrosion inhibitors and coatings and study their behaviour in protection of metals. Besides, it is identified that the combination of ionic liquid, PIL and graphene could possibly contribute to the development of the ultimate corrosion inhibitor based coating.

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“…The high aspect ratio of the CNTs, the high surface area (high interfacial area between nanofiller and polymer) and their excellent mechanical properties: elastic modulus of around 0.8 TPa, tensile strength of around 150 GPa and elongation at break larger than 10%, contributed to the increase of the tensile properties of the epoxy gelcoats [27][28][29][30]. While the layered exfoliated structure and the platelet shape of the nanographite is responsible for the enhanced tensile properties [31][32][33][34]. The reinforcing mechanisms of ceramic fillers like the titanium dioxide and the montmorillonite clay that were used in the present study have been attributed to their large surface area and surface reactivity of the inorganic phase, the corresponding restricted mobility of the polymer chains and to the increase in the effective particle volume fraction in the nanocomposite [35][36][37].…”

Section: Resultsmentioning

confidence: 99%

“…CNTs are able to create a critical path to diffuse thermal energy at this loading level. Based on an experimental study on thermally conductive composites filled with platelet-shaped boron nitride particles, it was suggested that fillers with platelet shape offer advantages over other spherical or cylindrical morphologies because they can overlap with a large contact area permitting much closer contact between adjacent platelets and reducing the thermal contact resistance [17,[34][35][36][37][38][39]. In addition, Table 4 depicts the data obtained for the coefficient of linear thermal expansion (CLTE) tests.…”

Section: Resultsmentioning

confidence: 99%

Effect of nanofillers on the properties of a state of the art epoxy gelcoat

Karapappas¹,

Tsotra²,

Scobbie³

2011

Express Polym. Lett.

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Abstract. In this work, the effect of the inclusion of electrically conductive and non-conductive nanofillers in a state of the art epoxy gelcoat was studied. The conductive fillers used were multi-wall carbon nanotubes and exfoliated nanographite. The non-conductive ones were nanoclay and nano-titanium dioxide. The content of the nanofillers was 0.65% per weight and their inclusion took place using high shear mixing devices. The conductive fillers showed an increase in tensile and fracture properties, as well as in the thermal properties whereas the non-conductive fillers did not show any improvement on the fracture properties. The glass transition temperature was practically unaffected by the presence of the nanofillers while conversly, the coefficient of thermal expansion was decreased for all the nanofillers for temperatures above the glass transition temperature. Finally, weatherometer tests showed that the nanofillers contribute into less weight losses in comparison with the reference epoxy gelcoat.

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Characterization of epoxy functionalized graphite nanoparticles and the physical properties of epoxy matrix nanocomposites

Abstract: Young's modulus by 50%. These results were realized without compromise to the resin toughness.35

Cited by 110 publications

References 28 publications

From clay to graphene for polymer nanocomposites—a survey

From clay to graphene for polymer nanocomposites—a survey

Emerging Corrosion Inhibitors for Interfacial Coating

Effect of nanofillers on the properties of a state of the art epoxy gelcoat

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