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1
Content available The Effect of Cryogenic Cycling on the Mechanical Properties of Epoxy-Glass Composites
Krzak Anna, Nowak Agnieszka J., Gołombek Klaudiusz
Advances in Science and Technology. Research Journal
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2024
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Vol. 18, no 4
149--162
EN
Glass-epoxy laminates are characterized by exceptional properties such as high thermal insulation, resistance to mechanical damage, and stability at low temperatures. These crucial characteristics make them suitable for diverse applications, including cryogenics. Their application in cryogenics allows them to maintain low temperatures in research and industrial processes. This article ana-lyzes the effect of cryogenic cycles on the functional properties of composite materials. The study investigated the influence of cryogenic cycles on the mechanical properties of glass-epoxy laminates. Three sets of cycles were employed, each consisting of 1, 5, and 10 cycles. After each set of cycles, the mechanical properties, including impact strength, flexural strength, and Young's modulus, were measured and compared. Additionally, after each series, scanning electron microscopy (SEM) was used to carefully observe the material's surface and detect possible changes in its appearance and structure, such as cracks or deformations. Conclusions from the conducted research provide essential information on the correlation between cryogenic cycles and the functional properties of composites obtained by coating. The research results can be used to design and improve these materials in various industrial applications. This work determines the effect of a different composition of resin reinforced with glass fabric weighing 205 g/m2 on the mechanical properties of composite materials subjected to cryogenic cycles. This research aims to create innovative materials adapted to work in cryogenic environments.
2
Content available Autocatalytic Metallization of Polymer Materials Produced by the Additive Technology
Gocki Michał, Nowak Agnieszka J.
Advances in Science and Technology. Research Journal
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2024
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Vol. 18, no 4
97--110
EN
The article describes each stage of the autocatalytic electroless metallization process of thermoplastic polymers produced with 3D printing technology. In particular, the influence of the preparation of the sample's surface layer on the quality of the finished metallic coating was assessed. Samples made of polylactide filament and polylactide with the addition of copper were subjected to metallization. In the metallization process, six different etching solutions were prepared to etch the polymer’s surface layer. The concentration of sulfuric acid VI was 200g/dm³ or 100g/dm³, sodium hydroxide 100g/dm³, and potassium permanganate 50g/dm³ or 20 g/dm³. The microscopic analysis and measurement of the arithmetic mean of the ordinates of the surface roughness profile of the samples for the selected process steps are presented.
3
Wpływ rodzaju napełniacza naturalnego na strukturę i własności kompozytów polimerowych
Nowak Agnieszka J., Drynda Paulina, Wolny Justyna
Modelowanie Inżynierskie
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2021
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T. 42, nr 73
21--29
PL
W artykule przedstawiono zagadnienia dotyczące kompozytów polimerowych z naturalnym wzmocnieniem, w tym kompozytów biodegradowalnych. W ramach pracy własnej wytworzono kompozyty o osnowie polimeru biodegradowalnego BIOPLAST GS 2189 z napełniaczem w postaci mączki drzewnej oraz odpadowego przemiału kawy o zawartości do 20% obj. Próbki do badań uformowano w technologii wtrysku. Zbadano wpływ rodzaju oraz zawartości procentowej napełniacza na strukturę, własności mechaniczne oraz nasiąkliwość wody wytworzonych materiałów.
EN
The article presents issues related to polymer composites with natural reinforcement, including biodegradable composites. As part of our own work, composites based on the biodegradable polymer BIOPLAST GS 2189 with a filler in the form of wood flour and waste coffee ground with a content of up to 20% by volume were produced. The test specimens were formed in the injection technology. The influence of the type and percentage of the filler on the structure, mechanical properties and water absorption of the produced materials was investigated.
4
Metody badań elektrochemicznych urządzeń do magazynowania energii
Gocki Michał, Nowak Agnieszka J.
LAB Laboratoria, Aparatura, Badania
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2021
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R. 26, nr 2
38--42
5
Własności przetwórcze materiałów polimerowych - oznaczenie współczynnika szybkości płynięcia (MFI)
Nowak Agnieszka J., Lis Andżelika
LAB Laboratoria, Aparatura, Badania
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2020
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R. 25, nr 4
26--29
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