Regularities of Impact Failure of Epoxy Composites with Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; Microfiller and their Analysis on the Basis of External Surface Layer Concept

Букетов, А. В.; Stukhlyak, P. D.; Maruschak, Pavlo; Panin, S. V.; Menou, Abdellah

doi:10.4028/www.scientific.net/kem.712.149

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…As a result, the polymer loses the ability to dissolve in physically and chemically active environments [9]. The low values of water absorption of all the studied specimens can be explained by the presence of fillers (mica, hexagonal boron nitride), which are characterized by high modulus and low relaxation rate [14,[21][22]. Reducing of the impact strength and energy, spent on destruction of the specimen, which was kept in petrol, can be due to the wash-out of the low molecular weight fraction of the polymer [9].…”

Section: Resultsmentioning

confidence: 99%

“…It is known that behavior of the polymers on fatigue cracks is usually divided in three discrete phases: first -the threshold phase indicating the initiation of the crack (I); second -the phase of stable crack propagation (II); third -the phase of fast and unstable growth of cracks (III) (Figure 2, a) [16]. Analogous phases of the crack growth are indicated in works [14,17], which allows to assert about the reliability of the obtained results.…”

Section: Methodsmentioning

confidence: 99%

“…Processes of localization of deformations and destruction of the CM were investigated. The shock characteristics of the CM, modified by the energy and magnetic fields, ultraviolet irradiation, by addition of fillers of varying dispersion and nature were investigated by authors [14]. Literature analysis showed that most studies were conducted under normal conditions (pressure, temperature, humidity).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Impact Strength of the Epoxy-Polyester Material for Using in Aggressive Environments in the Water Transport

Yakushchenko¹,

Brailo²,

Букетов³

et al. 2021

Komunikácie

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The influence of the aggressive environments of river water, seawater, oil petrol and sodium hydroxide on the impact strength of epoxy-polyester composite was investigated. Testing was conducted by two different methods. It was determined that the impact strength of specimens that were kept at air was W' = 4.2 kJ/m2 (by the second method - W'' = 7.0 kJ/m2). The energy spent on destruction of the control specimen was E = 0.92 J. The main regularities of the crack propagation process in the studied material were found and qualitatively described. The time of a crack propagation (τ = 0.16 μs) was determined. The maximum load, which leads to destruction of the specimen was P max = 2.47 kN. The comparative analysis of investigated specimens was conducted by the IR-spectroscopy method. It was found, that the biggest decrease in material properties was observed for the specimen that was kept in the petrol environment.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of the Impact Strength of the Epoxy-Polyester Material for Using in Aggressive Environments in the Water Transport

Yakushchenko¹,

Brailo²,

Букетов³

et al. 2021

Komunikácie

Self Cite

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Investigation of epoxycomposites linking kinetics during ultrasonic treatment

2021

Funct.Mater.

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Research of properties of protective coating applied to the surface of reaction-sintered ceramic materials

Kovbashyn¹,

Bochar²

2021

Visnyk TNTU

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The study describes the properties of the protective coating deposited on the surface of the reaction-sintered silicon carbide and molybdenum disilicide. The technology of increasing the protective ability of the coating of products deposited on the surface on the basis of reactive sintered carbide of silicon and molybdenum disilicide, which operate in an oxidizing environment at high temperature and a sharp change of thermal regime, is investigated. The obtained results showed that the presence of a protective slip layer significantly increases the stability of the deposited silicoboride coating, thus blocking the interaction of silicon hexaboride with the environment, slowing down almost all diffusion processes at the transition of the interaction of diffusion. It has been established that the simultaneous use of both diffusion and slurry coatings enables maximum protection of reaction-sintered ceramic materials based on silicon carbide and molybdenum disilicide against high-temperature gas corrosion. The developed coating ensures maximum resistance to repeated changes in temperature conditions, while cyclic changes destroy products of silicon carbide and molybdenum disilicide without applied protective coating. The proposed protective coating can be recommended for the protection of reaction-sintered ceramic materials operated in high temperatures.

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Regularities of Impact Failure of Epoxy Composites with Al<sub>2</sub>O<sub>3</sub> Microfiller and their Analysis on the Basis of External Surface Layer Concept

Abstract: Impact toughness of epoxy composite materials reinforced with Al2O3 microparticles of various concentrations were investigated. It is shown that the external (outer) surface layers that form around disperse filler particles is one of the factor responsible their mechanical properties.

Cited by 7 publications

References 11 publications

Investigation of the Impact Strength of the Epoxy-Polyester Material for Using in Aggressive Environments in the Water Transport

Investigation of the Impact Strength of the Epoxy-Polyester Material for Using in Aggressive Environments in the Water Transport

Investigation of epoxycomposites linking kinetics during ultrasonic treatment

Research of properties of protective coating applied to the surface of reaction-sintered ceramic materials

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