Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Aleksander Prociak"'
Publikováno v:
Journal of Composites Science, Vol 8, Iss 4, p 135 (2024)
In this study, polyurethane-polystyrene composites (RPURF-EPS) were obtained with the co-expansion method. This method consists of utilizing the heat of the exothermic reaction of polyurethane (PUR) formation to expand polystyrene beads (PSBs). The m
Externí odkaz:
https://doaj.org/article/9532280215354c3f8e1e6cead09b8e23
Autor:
Maria Kurańska, Elżbieta Malewska, Hubert Ożóg, Julia Sędzimir, Aleksandra Put, Natalia Kowalik, Sławomir Michałowski, Marcin Zemła, Michał Kucała, Aleksander Prociak
Publikováno v:
Polymers, Vol 16, Iss 8, p 1145 (2024)
Natural oils from watermelon, cherry, black currant, grape and pomegranate fruit seeds were applied in the synthesis of biopolyols using the transesterification reaction. In this manuscript, the preparation possibility of open-cell foams from a polyu
Externí odkaz:
https://doaj.org/article/73bd52c11e1d424b96fa9599b60d6341
Publikováno v:
Materials, Vol 17, Iss 1, p 158 (2023)
The use of alternative raw material sources in polyurethane chemistry is necessary given the limited supply of fossil fuels, their rising prices and the concern for sustainability. The production of biopolyols from edible vegetable oils such as rapes
Externí odkaz:
https://doaj.org/article/cc3d5242bea24b1397c7c7d88aaa2fd9
Publikováno v:
Materials, Vol 16, Iss 22, p 7217 (2023)
In this study, rigid polyurethane foams modified with non-halogenated flame retardant were obtained. The foams were synthesized using two systems containing different blowing agents. In the first one, cyclopentane and water were used as a mixture of
Externí odkaz:
https://doaj.org/article/be7d5ba5d9b14c6eb5e4f7465fe25cac
Autor:
Krzysztof Polaczek, Maria Kurańska, Elżbieta Malewska, Małgorzata Czerwicka-Pach, Aleksander Prociak
Publikováno v:
Materials, Vol 16, Iss 18, p 6139 (2023)
Open-cell spray polyurethane foams are widely used as highly efficient thermal insulation materials with vapor permeability and soundproofing properties. Unfortunately, for the production of commercial foams, mainly non-renewable petrochemical raw ma
Externí odkaz:
https://doaj.org/article/bd9862786d7046ea92656607502b2b09
Publikováno v:
Polymers, Vol 15, Iss 18, p 3660 (2023)
New rigid polyurethane foams (RPURFs) modified with two types of bio-polyols based on rapeseed oil were elaborated and characterized. The effect of the bio-polyols with different functionality, synthesized by the epoxidation and oxirane ring-opening
Externí odkaz:
https://doaj.org/article/35e0f236208849d5b891edcb3fb804d4
Autor:
Maria Kurańska, Mariusz Ptak, Elżbieta Malewska, Aleksander Prociak, Mateusz Barczewski, Mateusz Dymek, Fábio A. O. Fernandes, Ricardo Alves de Sousa, Krzysztof Polaczek, Karolina Studniarz, Katarzyna Uram
Publikováno v:
Materials, Vol 16, Iss 8, p 3032 (2023)
Renewable materials are materials that are replenished naturally and can be used again and again. These materials include things such as bamboo, cork, hemp, and recycled plastic. The use of renewable components helps to reduce the dependence on petro
Externí odkaz:
https://doaj.org/article/2566d70a27214246a55e6f2cf5ecdbba
Autor:
Mateusz Barczewski, Maria Kurańska, Kamila Sałasińska, Joanna Aniśko, Joanna Szulc, Izabela Szafraniak-Wiza, Aleksander Prociak, Krzysztof Polaczek, Katarzyna Uram, Karolina Surmacz, Adam Piasecki
Publikováno v:
Polymers, Vol 14, Iss 22, p 4967 (2022)
This article presents the results of research on obtaining new polyurethane (PUR) foams modified with thermally expanded vermiculite. The filler was added in amount of 3 wt.% up to 15 wt.%. The additionally applied procedure of immersion the non-orga
Externí odkaz:
https://doaj.org/article/cad63c0b1c924abe844f6fd37d626575
Autor:
Marcin Zemła, Aleksander Prociak, Sławomir Michałowski, Ugis Cabulis, Mikelis Kirpluks, Kirils Simakovs
Publikováno v:
International Journal of Molecular Sciences, Vol 23, Iss 20, p 12386 (2022)
In this article, rigid polyurethane foams obtained with the addition of a bio-polyol from rapeseed oil, were modified with the dimethyl propane phosphonate as additive flame retardant and two reactive flame retardants diethyl (hydroxymethyl)phosphona
Externí odkaz:
https://doaj.org/article/79cc3bcdbc2d43db945da622b37bdacb
Autor:
Klaudia Kamińska, Mateusz Barczewski, Maria Kurańska, Elżbieta Malewska, Krzysztof Polaczek, Aleksander Prociak
Publikováno v:
Materials, Vol 15, Iss 17, p 6087 (2022)
This article presents an ecological approach based on climate neutrality to the synthesis of open-cell polyurethane foams with modified used cooking rapeseed oils. Water was used as a chemical blowing agent in the amount of 20–28 wt.% in relation t
Externí odkaz:
https://doaj.org/article/354d1dca4fc54531852a1c4362384e1d