The effect of silica nanoparticles, thermal stability, and modeling of the curing kinetics of epoxy/silica nanocomposite

Arabli, Vahid; Aghili, Alireza

doi:10.1080/09243046.2014.944254

Cited by 23 publications

(17 citation statements)

References 31 publications

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“…At higher temperatures, the SNPs move toward the surface because of silica's low surface potential energy. This silica acts as a thermal insulator and protects the polymer [29][30][31].…”

Section: Field Emission Scanning Electron Microscopy (Fe-sem)mentioning

confidence: 99%

Enhancement in Nanomechanical, Thermal, and Abrasion Properties of SiO2 Nanoparticle-Modified Epoxy Coatings

et al. 2020

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Epoxy formulations containing 1%, 3%, and 5% SiO2 nanoparticles (SNPs) were produced and applied to mild steel substrates in order to improve their thermal, nanomechanical, and abrasion resistance. Field emission scanning electron microscopy (FE-SEM) was used to analyze the dispersion of nanoparticles in the final coating samples, and Energy-dispersive X-ray spectroscopy (EDX) was used to confirm the presence of nanoparticles. Thermogravimetric analysis (TGA) was employed to measure the thermal resistance of the prepared coatings. Conventional techniques were used to measure the impact and scratch resistance. For nanomechanical testing, nanoindentation was performed using a Berkovich-type indenter. Using a taber abraser, the abrasion properties of the coatings were measured. The FE-SEM images indicated good dispersion of the nanoparticles at all three different loading levels. The scratch, impact, and hardness of coatings improved with the addition of the SNPs. Nanomechanical properties, such as hardness and elastic modulus, improved when compared to the unmodified coatings. The thermal and abrasion resistances of the coatings improved with the increase in the SNPs content of the coatings. The highest mechanical, thermal, and abrasion properties were obtained for the coatings with 5% SNP content.

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“…At higher temperatures, the SNPs move toward the surface because of silica's low surface potential energy. This silica acts as a thermal insulator and protects the polymer [29][30][31].…”

Section: Field Emission Scanning Electron Microscopy (Fe-sem)mentioning

confidence: 99%

Enhancement in Nanomechanical, Thermal, and Abrasion Properties of SiO2 Nanoparticle-Modified Epoxy Coatings

et al. 2020

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“…It has been proven that the addition of nanoparticles to polymers can improve many of their final properties, so nanocomposites have attracted more attention, and on that basis, many applications have been developed . Many researchers have studied different nanofillers, such as carbon black, fumed silica, titanium oxide, calcium carbonate, calcium silicate, and alumina, in recent years . There have been many investigations on the improvement of the mechanical, thermal, and electrical properties of epoxy resin .…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have studied different nanofillers, such as carbon black, fumed silica, titanium oxide, calcium carbonate, calcium silicate, and alumina, in recent years . There have been many investigations on the improvement of the mechanical, thermal, and electrical properties of epoxy resin . Tarrio‐Saavedra et al .…”

Section: Introductionmentioning

confidence: 99%

“…These researchers claimed that the fracture toughness of the composites increased more than 50% because of the strong effect of fumed silica particles on the crack propagation resistance. Arabi and Aghili investigated the effect of silica nanoparticles on the curing kinetics of epoxy resin with the differential scanning calorimetry method. The results show that the curing energy decreased because the silica nanoparticles acted as a catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical, thermal, and hydrophobic properties of silica aerogel–epoxy composites

Maghsoudi

Motahari

2017

J of Applied Polymer Sci

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Epoxy composites were prepared with different contents of hydrophobic silica aerogel particles to investigate their mechanical, thermal, and hydrophobic properties. The composites, particularly the one containing 1 wt % silica aerogel, showed remarkable toughness and yielding behaviors compared to neat epoxy, with its brittle behavior. As the content of silica aerogel increased, the thermal properties of the composites (e.g., thermal conductivity and thermal stability) improved. This was due to the very low thermal conductivity and high thermal stability of the silica aerogel particles. Moreover, the use of the hydrophobic silica aerogel led to the development of composites with hydrophobic properties. To examine the hydrophobicity more deeply, a series of water‐uptake tests were performed, and the results show that the composite with 3 wt % silica aerogel absorbed 50% less water than the neat epoxy. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45706.

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“…One possible explanation for this discrepancy may be that the nanoparticles used by Xie et al are larger (60 nm) than those used by Ghosh et al (50 nm). Arabli and Aghili reported a small increase in the IDT for epoxy nanocomposites containing SiO 2 , which is corroborated by Liu et al However, Alzina et al presented the opposite, showing decreased thermal stability with a lower IDT. Guo et al showed small changes in the thermal stability dependent on the type of surface modification used.…”

Section: The Structure–property Relations In Epoxy Nanocompositesmentioning

confidence: 60%

Epoxy‐Based Nanocomposites for High‐Voltage Insulation: A Review

Adnan

Tveten

Glaum

et al. 2018

Adv Elect Materials

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Epoxy nanocomposites, with inorganic oxide nanoparticles as filler, can exhibit novel property combinations, such as enhanced mechanical strength, higher thermal conductivity, increased dielectric breakdown strength, and reduced complex permittivity. Therefore, they have interesting applications in nanodielectrics, such as high‐voltage insulation materials or in microelectromechanical systems. The primary challenge in the processing of nanocomposites is achieving a homogeneous dispersion of the nanoparticles. The dispersion quality affects the interfaces between the organic and the inorganic components, which can determine the final properties of the nanocomposite. Here, the processing methods and the resulting dielectric, mechanical, and thermal properties of epoxy nanocomposites with inorganic oxide fillers are presented. Functionalization of the nanoparticle generally improves the dispersion of the particles in the polymer matrix. Different oxide fillers are observed to have similar effects on the properties of the nanocomposites. Epoxy‐based nanocomposites exhibit improved dielectric breakdown strength and lower complex permittivity with inorganic oxide nanoparticles at low filler contents, compared to conventional composites with micrometer‐sized particles. While there are some inconsistencies in the findings, which may be attributed to differences in the dispersion quality, an improved understanding of the nanoparticle–epoxy interfaces in nanocomposites will enable tailoring of the desired properties, opening new avenues for application.

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The effect of silica nanoparticles, thermal stability, and modeling of the curing kinetics of epoxy/silica nanocomposite

Cited by 23 publications

References 31 publications

Enhancement in Nanomechanical, Thermal, and Abrasion Properties of SiO2 Nanoparticle-Modified Epoxy Coatings

Enhancement in Nanomechanical, Thermal, and Abrasion Properties of SiO2 Nanoparticle-Modified Epoxy Coatings

Mechanical, thermal, and hydrophobic properties of silica aerogel–epoxy composites

Epoxy‐Based Nanocomposites for High‐Voltage Insulation: A Review

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