Modification of adhesive materials based on epoxy oligomers with fluorinated organic compounds

Пестов, А. В.; Пузырев, И. С.; Мехаев, А. В.; Gorbunova, T. I.; Салоутин, В. И.; Смирнов, С. В.; Вичужанин, Д. И.; Matafonov, P. P.

doi:10.1134/s10704272140400132

Cited by 9 publications

(2 citation statements)

References 40 publications

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“…Thus, the analysis of the obtained experimental data provides a chemical explanation for the influence of the composition of the metal surfaces on the strength of their adhesion to each other; this influence was previously observed and exemplified in [39,40]. Besides, the detailed specification of anisotropy in the chemistry of adhesion by means of mechanical testing enables us to design targeted epoxy materials with a required chemical structure depending on the metal surfaces to be bonded and the conditions of mechanical loading.…”

Section: Results and Analysismentioning

confidence: 75%

Effect of the Stress State on the Adhesive Strength of an Epoxy-Bonded Assembly

Смирнов

Коновалов

Veretennikova

et al. 2021

Frattura Ed Integrità Strutturale

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The paper studies the adhesive strength of aluminum alloy specimens bonded with the use of an epoxy adhesive, under the tensile-shear stress state, depending on the testing temperature. Tension of modified Arcan specimens with load angles of 0, 22.5, 45, 67.5, and 90° with respect to the plane of adhesion is chosen as the experimental method. Experiments were performed at temperatures of −50, +23, and +50 °С. The analysis of the obtained results yields a linear fracture criterion and a fracture locus for the adhesive failure strain energy density, which takes into account the ratio of the elastic properties of the adhesive to those of the substrate. The region bounded by the fracture loci of adhesive strength and ultimate strain energy density determines the conditions for the safe loading of the bonded assembly in terms of the energy and force criteria of adhesive failure. The proposed fracture loci can be used, preferably simultaneously, to estimate the in-service strength and reliability of adhesively bonded assemblies.

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Section: Results and Analysismentioning

confidence: 75%

Effect of the Stress State on the Adhesive Strength of an Epoxy-Bonded Assembly

Смирнов

Коновалов

Veretennikova

et al. 2021

Frattura Ed Integrità Strutturale

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“…The production and use of fluorine-containing benzoyl peroxides for the vulcanisation of rubbers makes it possible to introduce additional fluorinated groups into the elastomer macromolecules, promoting an increase in the cold and chemical resistance of rubber compounds based on fluoroelastomers [3,4]. However, when the fluorine-containing benzoyl peroxides break down in the process of vulcanisation, fluorine-containing benzoic acids are formed, and these accelerate the ageing of the rubber compounds, which has prompted a search for new fluoroperoxides without these shortcomings.…”

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confidence: 99%

Features of the Structure Formation of Fluoroelastomers by Fluoroperoxides

Chapurkin

Medvedev

Chapurkin

2016

International Polymer Science and Technology

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Fluorocarbon elastomers, owing to the fluorine atoms they contain, ensure high thermal stability, resistance to fuels, oils, lubricants, and hydraulic fluids, and also chemical inertness and weather resistance of the rubber compounds based on them [1]. However, the properties of rubber compounds depend considerably on the structure-forming agents used for their vulcanisation. Peroxide initiators are being used increasingly for the structure formation of fluoroelastomers [2, 3]. During service in corrosive media, the advantage of peroxide vulcanisation is undeniable, as bisphenol vulcanising systems can be used only in the presence of calcium hydroxide, and interaction of the latter with acids causes rubber compounds to swell in them.

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