A study of epoxide–polysulfone polymer systems for high-strength adhesives of aviation purpose

Каблов, Е. Н.; Chursova, L. V.; Lukina, N. F.; Kutsevich, K. E.; Rubtsova, E. V.; Petrova, A. P.

doi:10.1134/s1995421217030066

Cited by 12 publications

(3 citation statements)

References 6 publications

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“…4-13. DOI: https://doi.org/10.18698/0236-3941-2018-3-4-13 [4] Каблов Е.Н., Чурсова Л.В., Лукина Н.Ф. и др.…”

Section: рис 2 режим отвержденияunclassified

“…Для выравнивания значений градиентов температур и степени отверждения на всех участках изделия предлагается проводить нагрев с различной скоростью. В результате проведенных исследований установлены оптимальные технологические режимы, обеспечивающие минимальные значения градиентов температур Углепластик, баллон, моделирование, кинетика, градиент температур, отверждение ких конструкций (по сравнению с металлическими) являются высокие удельные характеристики (удельные прочность и жесткость), длительная стойкость к агрессивным средам, хорошие трибологические свойства и другие [4][5][6].…”

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Investigating Curing Kinetics for a Thin-Walled Carbon Fibre Structure

Maung

Malysheva

2020

HoBMSTU.SME

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The paper presents a computational method and an example of using it to derive parameters of a high-pressure filament-wound carbon fibre vessel designed for unmanned aerial vehicle applications. A feature of the vessel design is its variable thickness, which may result in temperature gradients, residual stresses, and diminished strength. We propose a method for assessing curing kinetics that takes into account the heat emitted during this process. We used the ESI PAM-RTM software package for simulation and determined that at the initial stage of the curing process the temperature and degree of curing in the thinner part of the product exceed those in its thicker part. As the degree of curing increases, the exothermic reaction taking place affects the temperature fields, which leads to an increase in temperatures and degree of curing in the thicker regions. In order to level the temperature gradients and degree of curing over the whole vessel, we propose to heat it at different rates. Our investigation results allowed us to establish the optimum manufacturing conditions ensuring the minimum temperature gradient values

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“…4-13. DOI: https://doi.org/10.18698/0236-3941-2018-3-4-13 [4] Каблов Е.Н., Чурсова Л.В., Лукина Н.Ф. и др.…”

Section: рис 2 режим отвержденияunclassified

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Investigating Curing Kinetics for a Thin-Walled Carbon Fibre Structure

Maung

Malysheva

2020

HoBMSTU.SME

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“…Composite materials are becoming more widespread in various fields of technology, especially in those where it is necessary to achieve a low weight with sufficient strength and dynamic parameters: in aviation, rocket and space technology. Currently, composite materials are widely used in the construction of aviation technology, including in helicopter construction, where the use of composite blades has been thoroughly studied and widely used [1][2][3][4][5][6][7][8][9][10][11][12][13]. At the same time, composite materials are not used in aircraft engine blades; therefore, research in this area is an important and relevant topic.…”

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confidence: 99%

Composite materials in aircraft engine blades

Khayrnasov

2021

PNRPU Mechanics Bulletin

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The article investigates the strength of the propeller blades made of a multilayer composite material, subjected to centrifugal and gas loads with various combinations of fiberglass and carbon fiber and orientation of the material base. The finite element method is used as a research method. A propeller blade used in turbines of jet engines and compressors, made of composite materials, is considered as a naturally twisted rod, provided that the hypothesis of flat sections across the thickness of a multilayer composite package is valid under conditions of rigid contact at the boundary of layers. The propfan blade model is modeled by four-node finite elements of natural curvature with forty-eight degrees of freedom, taking into account the compression of the normal. The applied method for calculating the strength makes it possible to assess the strength of an arbitrarily reinforced blade in sections and layer by layer. The blades of hydrodynamic engines of the first and second stages were considered under the action of centrifugal and gas loads. The stress was determined at 17 points of 21 cross-sections in layers. As a result of the study, the strength parameters of the blades with different ratios of the dissimilar materials of the layers of the multilayer composite material were obtained. Conclusions are drawn, based on the fact that the blades made of composite material have significant advantages in terms of strength and weight characteristics compared to blades made of materials traditionally used in technology in the manufacture of propfans. © PNRPUФинансирование. Исследование не имело спонсорской поддержки. Конфликт интересов. Авторы заявляют об отсутствии конфликта интересов.

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Copolyesters based on 3,5-dibrom-4-hydroxybenzoic acid chloranhydride

Хараев

Бажева

Sultigova

et al. 2021

J. Phys.: Conf. Ser.

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Modified copolyesters using 3,5-dibromo-4-hydroxybenzoic acid chloride have been synthesized by the method of low-temperature polycondensation (acceptor-catalytic polycondensation). The main laws governing the synthesis of copolyesters have been studied. It was found that the presence of bromine atoms reduces the reactivity of the hydroxyl group due to the steric effect, as well as due to the possible formation of a weak hydrogen bond between the bromine and hydrogen atoms of the hydroxyl group. The main physical and mechanical characteristics of the synthesized copolyesters have been investigated. Copolyesters are heat- and fire-resistant high-strength polymers that can be used in various industries as non-combustible heat-resistant structural polymer materials.

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A study of epoxide–polysulfone polymer systems for high-strength adhesives of aviation purpose

Cited by 12 publications

References 6 publications

Investigating Curing Kinetics for a Thin-Walled Carbon Fibre Structure

Investigating Curing Kinetics for a Thin-Walled Carbon Fibre Structure

Composite materials in aircraft engine blades

Copolyesters based on 3,5-dibrom-4-hydroxybenzoic acid chloranhydride

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