Epoxy reinforcement with silicate particles: Rheological and adhesive properties – Part I: Characterization of composites with natural and organically modified montmorillonites

Ilyin, Sergey O.; Brantseva, T. V.; Gorbunova, I. Yu.; Korolev, Yu. M.; Kerber, M. L.

doi:10.1016/j.ijadhadh.2015.05.008

Cited by 41 publications

(16 citation statements)

References 28 publications

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“…A few publications could be found on the adhesion of nanofilled systems to the reinforcing fibers and on the final properties of the nanofilled reinforced plastics , but the number of such papers is growing . Two groups of factors should be taken into account when considering the probable effect of the nanofillers on the matrix adhesion to the reinforcing fiber: those influencing formation and debonding of adhesion joints.…”

Section: Introductionmentioning

confidence: 99%

Epoxy nanocomposites as matrices for aramid fiber‐reinforced plastics

et al. 2017

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Rheological and mechanical properties of nanofilled epoxy resin were studied, including adhesion to aramid fibers and strength of impregnated aramid strands. Light scattering and rheological measurements data imply that nanodiamonds (NDs) and multiwall carbon nanotubes form stable nanosized agglomerates in epoxy resin, whereas for epoxy‐organomodified montmorillonite systems, individual clay platelets orientation might be present. Also, according to the rheology of these systems, formation of the networks of epoxy molecules adsorbed on the NDs particle surface is suggested. Increase in the viscosity of the epoxy oligomers due to the nanoparticles incorporation results in the worsening of the impregnation of the aramid fibers by these formulations. However, enhanced adhesion properties could be obtained when using nanofillers, with a maximum at 1–2 wt% of nanofillers. A 25–35% growth of the pull‐out adhesion strength is also achieved. Increased cohesive strength and decreased residual stresses are supposed to be the reasons of adhesion strength decrease according to the literature. Adhesion strength increase was accompanied by a 10% enhancement of the strength of impregnated aramid strands. Moreover, a notable effect—up to a fourfold increase—was observed for the impact toughness of epoxy‐nanofillers samples. POLYM. COMPOS., 39:E2167–E2174, 2018. © 2017 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Epoxy nanocomposites as matrices for aramid fiber‐reinforced plastics

et al. 2017

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“…Epoxy/Clay Nanocomposite Characterization. A few publications described the preparation of epoxy/clay nanocomposites with the incorporation of unmodified clay [57] or minerals [58]. Herein, we studied the dispersion of some natural clays in the absence of organic modification within the epoxy resin matrix and described the chemical and physical characterization of the nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Epoxy/Nanocomposites Based on Natural Moroccan Clays with High Antimicrobial Activity: Morphological, Thermal and Mechanical Properties

Monsif

Zerouale

Kandri

et al. 2019

Journal of Nanomaterials

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In this study, a series of new epoxy/clay nanocomposites (ECN) has been prepared and characterized in order to investigate the properties and compare the effect of the unmodified Moroccan clay on the structure and properties of the composite materials. Five natural clays have been used to reinforce the neat epoxy resin with 1% wt and 5% wt achieving the clay dispersion only through strong milling and mechanical stirring without previous organic modifications of the clays. The quality of clay dispersion in the epoxy matrix and the morphology of nanocomposites have been studied by transmission electron microscopy (TEM), environmental scanning electron microscopy (ESEM), and X-ray diffraction (XRD). The mechanical and thermal properties have also been investigated. The antimicrobial activity of the nanocomposites has been tested against E. coli and S. aureus in order to evaluate their applicability as advanced antimicrobial materials. The results showed that the epoxy/crude clay nanocomposites exhibited a high inhibition action attending 99% against both bacteria in the case of the clay labeled A5.

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“…Many efforts have been made in order to improve the nanodispersion of HNT expecting an improvement in the matrix toughening. On the one hand, different mixing methods have been reported, like mechanical agitation, ball milling, ultrasonic treatments, solvent assistance, and so forth. On the other hand, there are strategies oriented to improve the filler–matrix physicochemical interaction through the surface modification of the halloysite .…”

Section: Introductionmentioning

confidence: 99%

Chemical reactions affecting halloysite dispersion in epoxy nanocomposites

Sánchez

Uicich

Arenas

et al. 2019

J of Applied Polymer Sci

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Halloysite nanotubes (HNTs) have attracted a technologic and scientific attention as reinforcements of epoxy-based nanocomposites. However, their reported interaction with epoxy matrices is varied and the controlled dispersion of HNTs is still a challenge. In this work, we study the effect of chemical reactions taking place in the dispersion process of halloysite and their possible influence in the composite's properties. HNTs' surface was modified through an alkaline treatment and by grafting two aminosilanes with different chain lengths and functionality numbers. Evidence of homopolymerization and degradation reactions was found, depending on the surface treatment. The rheological study indicated that an interconnected network can be achieved in epoxy/HNTs blends depending on the surface chemical characteristics of the nanofillers and the blending method. The better dispersion was accomplished when ultrasonicating with the aid of a solvent. Nevertheless, the mechanical properties of the nanocomposites are not warranted by selecting a dispersion method.During the last decade, scientists and engineers have discovered and developed a large range of exciting new applications for these unique, cheap, and abundantly available naturally occurring clays. 17,18 Regarding the production of reinforced polymers, one key factor needed to obtain a composite material that successfully fulfill the required service life performance, is to control nanofiller dispersion and nanofiller/matrix interaction. Due to their lower number of surface hydroxyl groups, it is expected that HNTs will disperse better than other silicates such as montmorillonite and kaolinite. It is reported that HNTs can be dispersed quite uniformly by a direct melt-blending Additional Supporting Information may be found in the online version of this article.

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Epoxy reinforcement with silicate particles: Rheological and adhesive properties – Part I: Characterization of composites with natural and organically modified montmorillonites

Cited by 41 publications

References 28 publications

Epoxy nanocomposites as matrices for aramid fiber‐reinforced plastics

Epoxy nanocomposites as matrices for aramid fiber‐reinforced plastics

Multifunctional Epoxy/Nanocomposites Based on Natural Moroccan Clays with High Antimicrobial Activity: Morphological, Thermal and Mechanical Properties

Chemical reactions affecting halloysite dispersion in epoxy nanocomposites

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