Nanocomposites based on epoxy resin and silicon dioxide particles

Barabanova, A. I.; Shevnin, P. L.; Pryakhina, T. A.; Бычко, К. А.; Казанцева, В. В.; Zavin, B. G.; Vygodskii, Ya. S.; Askadskii, A. A.; Philippova, Olga E.; Khokhlov, Alexei R.

doi:10.1134/s0965545x08070110

Cited by 20 publications

(7 citation statements)

References 7 publications

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“…However, it is not evident that this mechanism would lead to the enhanced properties of thermoset—in this case, nanoparticles could hinder network formation during curing and work as defects worsening properties of the resulting materials. And in fact, contradictory data could be found in the literature on the properties of nanofilled epoxy matrices, considering, for example, behavior of glass transition temperature of nanocomposites , and so on.…”

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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“…The curing process, -called the cross-linking process, operates under two main mechanisms, namely, the connection of the resin molecules with a catalytic homopolymerization or the linkage with a reactive known as a curing agent, such as polyamines, polyamides, polyphenols and anhydrides [13,14]. A higher amount of curing agent is usually required for epoxy resins with a resin to hardener ratio of 1 : 1 or 2 : 1, as compared to polyester or vinyl ester resins catalyzed with a small amount of catalyst [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Investigation and assessment of epoxy resin adhesives using Fourier‐transform infrared spectrometry

Şengül

Tüzün

2023

Materialwissenschaft Werkst

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Epoxy resin adhesives are very attractive for many industries, especially in the aerospace and automotive industries because they eliminate heavy connection elements, such as bolts and screws, and reduce the total weight. This study assesses developed epoxy resin adhesives using Fourier‐transform infrared spectrometry. The curing reaction between Epikote 828 epoxy resin and Epikure polyamidoamine curing agent 3090, and the chemical structure of the additives (CAB‐O‐SIL TS‐720) used for rheology control and six different types of fillers (calcite with particle diameters of 700 nm, 5 μm, and 10 μm, coated calcite with a particle diameter of 900 nm, and barite and calcite with a particle diameter of 5 μm) employed in the adhesives are investigated. The Fourier‐transform infrared spectrometry results of the epoxy resin and curing agent demonstrate that 83.5 % epoxy conversion is achieved at a temperature of 25 °C. The chemical composition of the additives with six different types of fillers and 1 %, 3 %, and 5 % additions of CAB‐O‐SIL TS‐720 prepared in both nujol mull and potassium bromide discs is characterized using Fourier‐transform infrared spectrometry. The potassium bromide discs yield higher intensities owing to good packing of cubic particles of potassium bromide with nano particle size CAB‐O‐SIL TS‐720 and all filler types.

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“…Within the epoxy resins, the most conventional ones are glycidyl ethers of bisphenol A (DGEBA) and cycloaliphatic epoxies. DGEBA-based resins are cured thermally via an addition mechanism with diamines, while cycloaliphatic epoxies are commonly cured with anhydrides [15][16][17] or homopolymerised via a cationic mechanism [18][19][20] initiated by UV radiation.…”

Section: Introductionmentioning

confidence: 99%

The use of montmorillonite organoclay in preparation of UV-cured DGBA epoxy anticorrosive coatings

Varela-Caselis

Rosas

Juárez

et al. 2018

Corrosion Engineering, Science and Technology

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In this study, montmorillonite organoclay (OMMT) at various concentrations were tested as nanofillers in preparation of UV-cured DGEBA epoxy anticorrosive coatings and applied on carbon steel substrates. The effect of incorporating different compositions of OMMT in UV-cured Araldite 506 coatings on the aqueous corrosion resistance of carbon steel in 5 wt-% aqueous NaCl electrolyte was evaluated. Analysis showed that the OMMT was homogenously dispersed in the polymer matrix. The result of X-ray diffraction showed that a certain degree of intercalation occurred for the OMMT in the polymer matrix. The OMMT addition affects the UV cured of the Araldite 506, as evidenced by Fourier transform infrared spectroscopy. The anticorrosive properties were evaluated by electrochemical impedance spectroscopy at various exposure periods. Coatings with 3 wt-% OMMT possessed the best corrosion performance among the coating specimens. In fact, the NC3 coating provided corrosion protection properties even after a long exposure to NaCl solution.

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Nanocomposites based on epoxy resin and silicon dioxide particles

Cited by 20 publications

References 7 publications

Epoxy nanocomposites as matrices for aramid fiber‐reinforced plastics

Epoxy nanocomposites as matrices for aramid fiber‐reinforced plastics

Investigation and assessment of epoxy resin adhesives using Fourier‐transform infrared spectrometry

The use of montmorillonite organoclay in preparation of UV-cured DGBA epoxy anticorrosive coatings

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