Temat: wytwarzanie materiałów - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The possibility of using wood fiber mats in products manufacturing made of polymer composites based on numerical simulations
Autorzy:: Frącz, W.
Janowski, G.
Ryzińska, G.
Powiązania:: https://bibliotekanauki.pl/articles/117977.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Tematy:: GFPR composite
wood-fiber-polyester resin composites
homogenization methods
Digimat software
kompozyty polimerowe
włókno drzewne
wytwarzanie materiałów
homogenizacja numeryczna
Opis:: In this work the calculations for predicting the properties of wood fiber mats – polyester resin composite using numerical homogenization method were performed. For this purpose, the microstructural strength properties were calculated using DIGIMAT FE commercial code. In addition, for com-parative purposes a calculation of polyester resin – glass fiber composites was conducted. This allowed to compare the properties of two types of com-positions. In addition, the obtained strength properties were used to simulate the work of product made of these composites. This study was performed using the Ansys commercial code. Usability of the polyester resin – wood fiber mat composite and knowledge of its properties will allow to find a correct application of this composite type and can provide an alternative way to other polymeric resin reinforced by mat.
Źródło:: Applied Computer Science; 2017, 13, 4; 65-75
1895-3735
Pojawia się w:: Applied Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Material investigations on poly(ethylene glycol) diacrylate-based hydrogels for additive manufacturing considering different molecular weights
Autorzy:: Klimaschewski, Sven F.
Küpperbusch, Janine
Kunze, Annika
Vehse, Mark
Powiązania:: https://bibliotekanauki.pl/articles/2106437.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: additive manufacturing
stereolithography
PEGDA
molecular weight
material properties
biocompatible hydrogel
wytwarzanie przyrostowe
stereolitografia
masa cząsteczkowa
właściwości materiałów
hydrożel
Opis:: The aim of this case study is to generate several poly(ethylene glycol) diacrylate-based hydrogels using additive manufacturing processes. The interest here is in determining different material properties. The test specimens are produced using a commercial stereolithography system. For this purpose, three formulations are prepared. The basis in each case is PEGDA with average molecular weights of 700 Mn, 575 Mn and 250 Mn. A photoinitiator and a UV absorber are added to ensure spatial and temporal cross-linking. Furthermore, the formulations are tested for their material properties according to ISO standards using tensile, compression and hardness tests. An equivalence can be found in the tensile and compression tests. The results with the molecular weights of 700 Mn and 575 Mn show values close to each other. However, the results of the material tests with the molecular weight of 250 Mn are ten times higher. The Shore A hardness values also correlate with the previous tests. These results between molecular weight and material property are particularly striking. A novel aspect of this method could be that the properties determined of these tailor-made high-performance polymers can be applied to different areas of application in an organism.
Źródło:: Journal of Mechanical and Energy Engineering; 2022, 6, 1; 33--42
2544-0780
2544-1671
Pojawia się w:: Journal of Mechanical and Energy Engineering
Dostawca treści:: Biblioteka Nauki

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