POLYMERIC COMPOSITE MATERIALS OF NEW GENERATION ON THE BASIS OF BINDER VSE-1212 AND THE FILLING AGENTS ALTERNATIVE TO ONES OF Porcher Ind. AND Toho Tenax

Gunyaeva, A.G.; Sidorina, A. I.; Kurnosov, Kurnosov; Klimenko, O.N.

doi:10.18577/2071-9140-2018-0-3-18-26

Cited by 6 publications

(2 citation statements)

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“…In particular, the current development trends in the field of production and application of reinforced plastics based on high-strength fibers for aviation industry are given in works [1][2][3]. In [4] the feasibility and experience of using perspective polymer composites in constructions of nodes and parts of aviation power plants and rocket and space equipment are considered. The works [5,6] are devoted to consideration of innovative development of advanced technologies to be implemented in automated processes of manufacturing three-dimensional reinforced aerospace composite structures.…”

Section: Introductionmentioning

confidence: 99%

Nonlinearity of mechanical behavior of 3D-reinforced composites under compression

Slovikov,

Babushkin,

Gusina

2023

Frattura Ed Integrità Strutturale

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Modern technological capabilities make it possible to produce 3D spatially-reinforced for polymer composite materials. The tasks of experimental research and analysis of the deformation process of new composite materials for aviation purposes taking into account the nonlinearity of mechanical behavior become actual. The paper presents an experimental study of the mechanical compression behavior of composite material specimens made of 3D woven carbon fiber preforms using the pressure impregnation technology (Resin Transfer Molding method with a pairwise interlayer reinforcement and a longitudinal layer). Compression mechanical tests were carried out on specimens using a universal system of electromechanical testing Instron 5882 and a system of 3D analysis of displacement and strain fields on the surface. Tests were conducted in accordance with ASTM D 3410 recommendations and using specialized tooling. Consideration of nonlinearity parameter during experimental data processing is proposed. The importance of determining the values of critical deformation in compression as a parameter characterizing the moment of the beginning of fracture is noted. Comparison of carbon fiber composite materials made by the same technology from fibers and binders of different manufacturers has been carried out. The experimental diagrams "stress-strain" and their approximating dependences taking into account the nonlinearity function w are obtained. The type of functions w of the studied materials is defined, the linear approximation of dependence of functions w on deformation is substantiated. Values of strength limits, elastic modulus, nonlinearity coefficient and critical damage were obtained, statistical processing of the obtained results and their analysis were carried out.

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Section: Introductionmentioning

confidence: 99%

Nonlinearity of mechanical behavior of 3D-reinforced composites under compression

Slovikov,

Babushkin,

Gusina

2023

Frattura Ed Integrità Strutturale

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“…The mechanical properties of carbon fi ber composite depend both on the values of these characteris tics of reinforcing carbon filler and resin, and the magnitude of adhesion of carbon filaments to epoxy resin (ER). Table 1 shows that thermosetting resin has low rates of elasticity and strength [4,5].…”

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confidence: 99%

Study on the effect of plasticizers and thermoplastics on the strength and toughness of epoxy resins

Mustafa¹,

Ismailov²,

Sanin³

2020

Nauk. visn. nat. hirn. univ.

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stuDy on the effect of plAstIcIZers AnD therMoplAstIcs on the strenGth AnD touGhness of epoxy resIns purpose. To increase the strength and toughness of epoxy resins of "cold hardening" and "hot hardening" by using modified plasticizers and thermoplastic polymers. Methodology. Epoxy resins of "cold hardening" of ED20 and "hot hardening" of Etal InjectT, modified with three types of plasticizers and four types of thermoplastic polymers, were investigated. The toughness and compressive strength of unmodified and modified resins were determined with the help of the Charpy impact test at various modifier contents. findings. Among all studied plasticizers, tricresyl phosphate has the most significant effect on the strength and toughness of both types of resins. The best combination of strength and toughness of ED20 resin is obtained with 5 % tricresyl phosphate con tent, whereas its higher content reduces the strength of the material. For Etal InjectT, high values of these properties are obtained with 15 % tricresyl phosphate content, whereas adding a smaller amount of a modifier does not change the material strength. The modification with thermoplastic polymers has a less obvious effect on the properties of epoxy resins than the modification with plasticizers does. The most effective additives to ED20 are hightemperature polycarbonate (5 %) and polysulfone (10 and 15 %), the addition of which causes a simultaneous increase in both properties. A significant increase in the toughness of Etal InjectT is observed by adding 5-15 % polycarbonate, but the strength of the resin hardly changes. The complex modification of resins with a mixture of plasticizer and thermoplastic leads to a decrease in the toughness and compressive strength of both types of resins. originality. When the polymer mixture hardens, plasticizer molecules dispersed into the environment of epoxy macromole cules weaken the rigid spatial crosslinking of macromolecules and make them more active. As a result, toughness increases; in certain cases so does resistance due to directed reorientation of macromolecules under deformation. The change in mechanical properties of epoxy resin when modified with thermoplastics is defined by the bonding strength of the resin and dispersed particles of thermoplastic polymer as well as by the degree of heterophase of the produced mixture. practical value. The results of changing the mechanical properties of epoxy resin while being modified with plasticizers and thermoplastics can be used to produce impactresistant composite materials for structural purposes, including those for aviation and spacerocket technology.

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Manufacturers of Carbon Fabrics: An Overview

Sidorina

2021

Fibre Chem

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POLYMERIC COMPOSITE MATERIALS OF NEW GENERATION ON THE BASIS OF BINDER VSE-1212 AND THE FILLING AGENTS ALTERNATIVE TO ONES OF Porcher Ind. AND Toho Tenax

Cited by 6 publications

References 0 publications

Nonlinearity of mechanical behavior of 3D-reinforced composites under compression

Nonlinearity of mechanical behavior of 3D-reinforced composites under compression

Study on the effect of plasticizers and thermoplastics on the strength and toughness of epoxy resins

Manufacturers of Carbon Fabrics: An Overview

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