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Wyświetlanie 1-4 z 4
Tytuł:
Characteristics of Polymer Materials with New Smart Utilities
Autorzy:
Głogowska, Karolina
Klepka, Tomasz
Dulebova, Ludmila
Powiązania:
https://bibliotekanauki.pl/articles/102277.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
polymer materials
stimuli-responsive smart polymer materials
mechanical properties
materiały polimerowe
inteligentne materiały polimerowe reagujące na bodźce
właściwości mechaniczne
Opis:
Modern technologies increasingly often rely on the use of intelligent (also known as “smart”) materials exhibiting unique utilities and properties. The state of knowledge on intelligent polymers ranges from diagnostic research to a more extensive body of knowledge, combined with the knowledge of the practical methods for manufacturing these materials. On the basis of a review of the subject literature, this paper describes the existing smart polymer materials. It also presents the examples of applications for these new materials. In the further part of the paper, an example of how the concept of smart materials can be used in new polymeric products to influence the selected mechanical properties when the surrounding temperature changes. The new material or the acquisition of different properties was created by undercutting or selecting the correct thickness and type of polymer layer from which the new product is made. The example of own research, apart from their analysis, ends with the conclusions of an applicative nature.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 4; 96-103
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Manufacturing of Composite Materials in the Matrix of Modified Phenol-Formaldehyde Resins
Autorzy:
Krasinskyi, Volodymyr
Jachowicz, Tomasz
Dulebova, Ludmila
Gajdoš, Ivan
Malinowski, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/2023485.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
modification
polyvinylpyrrolidone
phenol-formaldehyde resins
epoxy resin
adhesion strength
modyfikacja
poliwinylopirolidon
żywice fenolowo-formaldehydowe
żywica epoksydowa
siła przylegania
Opis:
The work develops the method of obtaining new composite materials based on novolac phenol-formaldehyde resin with improved adhesion properties and heat resistance. The composites were obtained by chemical modification of phenol-formaldehyde resin by epoxy resin and polyvinylpyrrolidone during the hardening of the composition. The mechanism of resins modification and hardening has been determined. It is shown that due to the modification, the heat resistance and adhesive strength of the obtained enamels and coatings have significantly increased. In particular, with the polyvinylpyrrolidone content from 0.5 to 1 wt% and epoxy resin from 25 to 50 wt%, the adhesive strength of the compositions increases 5-7 times.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 4; 267-272
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of the Properties of Modified Phenol-Formaldehyde Composites Using Mathematical Modeling of the Composition of the Polymer Mixture
Autorzy:
Krasinskyi, Volodymyr
Jachowicz, Tomasz
Malinowski, Rafał
Bajer, Krzysztof
Dulebova, Ludmila
Powiązania:
https://bibliotekanauki.pl/articles/2201811.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
phenol-formaldehyde resins
epoxy resin
polyvinylpyrrolidone
adhesion strength
regression equation
Scheffe test
Scheffe’s method
Opis:
The paper presents the results of studies of adhesive strength under shearing, thermal stability, and the content of the gel fraction of adhesive materials and enamels based on modified phenol-formaldehyde resins. Epoxy resin and polyvinylpyrrolidone were used to modify the phenol-formaldehyde resin. The influence of the content of components in the phenol-formaldehyde composition and the curing conditions on the properties of the obtained adhesive materials and coatings is analyzed. The effect of polyvinylpyrrolidone on internal stresses in adhesive joints has been established. By mathematical planning, the isolines of the characteristics of composite materials based on modified phenol-formaldehyde resin depending on their component’s compositions are plotted, and the regression coefficients are found, enabling one to get materials with predicted properties. From a technical and economic point of view, the following content of additives in modified phenol-formaldehyde resin is most optimal: epoxy resin from 25 to 50 wt%, polyvinylpyrrolidone from 0.5 to 1.0 wt%, curing catalyst from 1 to 2.5 wt%.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 4; 138--146
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanocomposites Based on Polyamide and Montmorillonite Obtained from a Solution
Autorzy:
Krasinskyi, Volodymyr
Suberlyak, Oleh
Kochubei, Viktoria
Jachowicz, Tomasz
Dulebova, Ludmila
Zemke, Viktoria
Powiązania:
https://bibliotekanauki.pl/articles/101953.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
polyamide
montmorillonite
polyvinylpyrrolidone
nanocomposite
modification in solution
structure
poliamid
montmorylonit
poliwinylopirolidon
nanokompozyt
modyfikacja w roztworze
struktura
Opis:
This work deals with the development of a method for obtaining polyamide and montmorillonite based nanocomposite, which was modified with polyvinylpyrrolidone by mixing in a formic acid solution. The structure and thermophysical properties of the obtained nanocomposites were investigated by means of the X-ray, differentialthermal, thermogravimetric and IR spectroscopic analyses. It was found that nanomodified polycaproamide has a higher crystallinity and higher thermal stability than the original PA-6, and is characterized by considerably higher melt fluidity. The presence of polyvinylpyrrolidone and exfoliated montmorillonite in the nanocomposite structure was confirmed experimentally.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 3; 192-198
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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