The Conditions for Obtaining Self-Organized Structures on the Tribological Surfaces of Composite Materials Based on Polytetrafluoroethylene Which Is Used in Automotive and Other Demanding Technologies

Panda, Anton; Dyadyura, Konstantyn; Harničárová, Marta; Valíček, Ján; Pandová, Iveta; Palková, Zuzana

doi:10.17973/mmsj.2019_12_2019031

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…Today there are hundreds of brands of polyurethanes in the world, thousands of names of the initial products from which they are synthesized [2,3]. This diversity, on the one hand, has great potential for variations with the composition of macromolecules, and hence their properties, and on the other hand, it significantly complicates the systematization of data on their relationship [4].…”

Section: Literature Reviewmentioning

confidence: 99%

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Wear Resistance Improvement of Linear Block-Polyurethanes Under Conditions of Liquid Friction

Panda

Anisimov

Dyadyura

2021

Management Systems in Production Engineering

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A significant disadvantage of parts made of linear block polyurethanes under conditions of friction contact in the presence of an aqueous medium is the intensification of hydrolysis processes and decrease in volume strength. It was proposed to slow down the hydrolysis of polyurethanes in three ways: by directed changes in chemical structure, by electromagnetic radiation of different intensities and by creation of composite materials, based on the principle of additional intermolecular crosslinking at the manufacturing and hot processing stages. The conditions for the formation of a smooth wear-resistant surface that protects the material from rapid destruction are revealed.

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Section: Literature Reviewmentioning

confidence: 99%

“…A significant disadvantage of BPU is their low hydrolytic stability under friction contact conditions. Previous studies have shown that the magnitude of wear rate of the oligesters-based BPU when adding water to the contact zone increases more than an order of magnitude [3].…”

Section: Introductionmentioning

confidence: 97%

Wear Resistance Improvement of Linear Block-Polyurethanes Under Conditions of Liquid Friction

Panda

Anisimov

Dyadyura

2021

Management Systems in Production Engineering

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“…Materials engineering is currently one of the fastest developing and most promising branches of technical sciences, which focuses primarily on the topic of materials in the context of research, development, design of their most suitable properties, identification of modern technological processes for their processing, control of their properties and qualities in concurrence with the possibilities of their most appropriate implementation [1]. The above-mentioned topic of material engineering is dynamically developing not only as a separate branch of technical sciences in the field of engineering, chemistry, medicine and the like, but also as an interdisciplinary technical science combining industrial biotechnology, engineering, medical engineering and others.…”

Section: Introduction *mentioning

confidence: 99%

New Ways of Materials Engineering Implementation in the Selection Processes of Biomaterials Intended for the Production of Dental Implants – Narrative Literature Review

Duplák

Dupláková

Mitaľ

et al. 2023

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The usage of knowledge obtained by connecting various scientific areas provides new opportunities for developing multidisciplinary branches to improve processes, procedures, technologies, and products. The present paper is devoted to the description of new approaches to material engineering and its possibilities in the process of the selection of materials intended for the production of dental implants. To ensure the conciseness of the article, a selection of state-of-the-art of scientific contributions is created in the introductory part in the form of a summary table, based on which the following parts of the article are elaborated. The first view of new ways of materials engineering is provided through the elaboration of the categorization of the setting of biological materials used in the production of dental implants, while taking into account current trends, technologies and findings. The second view of new ways of materials engineering is an extended complex process of selection and implementation of biomaterials intended for the production of dental implants originally created and adopted by the American Dental Association. Future studies should investigate the comprehensive analysis of technologies for the production of dental implant materials and also analysis of ways of digitization in the production of dental implants.

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“…The fast development of modern industry, in particular, the transport industry, leads to a continuous increase in requirements for the properties of used materials [1][2][3][4][5][6]. The increase in requirements is conditioned by the reliability of parts and mechanisms by reducing failure probability, their durability and reducing the inter-repair operational period [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Development of Epoxy-polyester Nanocomposite Materials with Improved Physical and Mechanical Properties for Increasing Transport Vehicle Reliability

Brailo¹,

Букетов²,

Yakushchenko³

et al. 2021

J. Nano- Electron. Phys.

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The significant attention is paid to the development of new composite materials which can be widely used in the manufacturing and repairing details and their components in different branches of industry including water transport. Intensity of cargo transportation by the water transport, an increase in the frequency of loading operations, their operation under the influence of aggressive environments put forward requirements for the improvement of indicators of resource saving of vehicle units and increasing the interresource period of work. In this context, the epoxy composite materials are one of the most promising materials, which meet the requirements of modern transport industry, due to their performance characteristics, which in most cases are better than traditional metals and alloys. Therefore, in the work, the physical and mechanical properties of composite materials with nanodispersed additives based on the epoxypolyester matrix, were studied. An oxidized nanoparticle additive and pyrogenic silicon dioxide were used as fillers. It was found that epoxy-polyester composites are characterized by improved properties at significant amount of the oxidized nanoparticle additive. An optimal ratio of the epoxy-polyester binder and additive was 100:0.06-0.08 pts. wt. It was ascertained that the introduction of pyrogenic silicon dioxide leads to a decrease in values of investigated properties of composite materials. In particular, the fracture surface of epoxy-polyester materials was analyzed with the method of optical microscopy. It was stated that composite materials filled with pyrogenic silicon dioxide were characterized by high residual stresses. The presence of low amount of fracture lines on the surface of composite materials filled with nanodispersed additive was revealed. Therefore, composite materials with nanofiller are characterized by higher resistance for fracture and impact loads.

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The Conditions for Obtaining Self-Organized Structures on the Tribological Surfaces of Composite Materials Based on Polytetrafluoroethylene Which Is Used in Automotive and Other Demanding Technologies

Cited by 4 publications

References 8 publications

Wear Resistance Improvement of Linear Block-Polyurethanes Under Conditions of Liquid Friction

Wear Resistance Improvement of Linear Block-Polyurethanes Under Conditions of Liquid Friction

New Ways of Materials Engineering Implementation in the Selection Processes of Biomaterials Intended for the Production of Dental Implants – Narrative Literature Review

Development of Epoxy-polyester Nanocomposite Materials with Improved Physical and Mechanical Properties for Increasing Transport Vehicle Reliability

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