Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Rafał Kozdrach"'
Autor:
Jolanta Drabik, Kamil Korasiak, Justyna Chrobak, Julia Woch, Natalia Brzeźniak, Wioletta Barszcz, Rafał Kozdrach, Jolanta Iłowska
Publikováno v:
Molecules, Vol 29, Iss 1, p 122 (2023)
The lubricating properties of the lubricants were tested under boundary friction conditions; it was found that the surface-active additives had reduced the wear mark and thus the value of the Goz/40 parameter (limiting load of wear). The introduction
Externí odkaz:
https://doaj.org/article/10094c85a37a48c2b388b34c4e481491
Publikováno v:
Molecules, Vol 28, Iss 7, p 3033 (2023)
Bio-greases were developed on the basis of vegetable oil obtained from Crambe Abyssinic seeds. An important aspect of this research is to monitor changes in their quality taking place under the influence of external factors. Raman spectroscopy was us
Externí odkaz:
https://doaj.org/article/caef24305e5b4af2a130cb9a48922633
Autor:
Michał Szmatoła, Justyna Chrobak, Rafał Grabowski, Jolanta Iłowska, Julia Woch, Iwona Szwach, Izabela Semeniuk, Jolanta Drabik, Małgorzata Wrona, Rafał Kozdrach, Beata Orlińska, Mirosława Grymel
Publikováno v:
Molecules, Vol 23, Iss 12, p 3243 (2018)
Raw vegetable oil from Crambe abyssinica was subjected to oxidative treatment to enhance its viscosity. The oxidation processes were carried out in the presence of N-hydroxyphthalimide with or without supercritical CO2 as a solvent. Four spectroscopi
Externí odkaz:
https://doaj.org/article/fea09868c05d4f0f9bc7059d6bccec6e
Autor:
Jolanta Iłowska, Justyna Chrobak, Rafał Grabowski, Michał Szmatoła, Julia Woch, Iwona Szwach, Jolanta Drabik, Magdalena Trzos, Rafał Kozdrach, Małgorzata Wrona
Publikováno v:
Molecules, Vol 23, Iss 8, p 2025 (2018)
Lubricants that are based on renewable raw materials have drawn increased attention in various applications, especially those related to the food industry. Due to the high requirements of environmental protection, there is a need to develop biodegrad
Externí odkaz:
https://doaj.org/article/7c1dd42857304676a4aa608c20a0bd41
Publikováno v:
Tribologia. 302:17-22
On the base of rheological tests, the resistance to deformation of lubricants elaborated on the base of Crambe abyssinica seed oil was evaluated. The developed lubricants were subjected to thermal and mechanical stresses, which allowed the evaluation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7e81dc2c4d4f0bab59af816077bdc3e
https://doi.org/10.5604/01.3001.0016.1604
https://doi.org/10.5604/01.3001.0016.1604
Autor:
Rafał Kozdrach
Publikováno v:
Nafta-Gaz. 77:127-135
The article presents the results of research on the influence the type of base oil in lubricating compositions has on the rheological parameters of selected lubricants. Vegetable, mineral, and synthetic dispersion phases were used to produce lubricat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::075ad7197a01fcadbfa9a461f94973a0
https://doi.org/10.18668/ng.2021.02.07
https://doi.org/10.18668/ng.2021.02.07
Autor:
Rafal Kozdrach
Publikováno v:
Tribology in Industry, Vol 46, Iss 1, Pp 80-96 (2024)
The article presents the results of tribological and rheological research of lubricating composition modified of various content of titanium dioxide. The analysis of anti-wear properties during the test for the tested lubricating composition indicat
Externí odkaz:
https://doaj.org/article/fdb9733419b74b55bb43d4d57a365c89
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract The diffusing wave spectroscopy (DWS) method made it possible to identify changes in the dynamics of the free movement of particles in the grease under the influence of temperature, which changed the viscoelastic properties of the grease. Ch
Externí odkaz:
https://doaj.org/article/5eff973e1d7b4d6290bb71cc569de7a0
Autor:
Rafał Kozdrach
Publikováno v:
Tribologia. 270:57-67
The paper discusses the influence of the vegetable dispersion phase on the rolling contact fatigue of bearings lubricated with ecological lubricating compositions. Four vegetable oils were used for the production of lubricating greases: rapeseed, sun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8baaa2cd916c5406537a0d6900b488e
https://doi.org/10.5604/01.3001.0010.6716
https://doi.org/10.5604/01.3001.0010.6716
Autor:
Rafal Kozdrach, Andrzej Stepien
Publikováno v:
C, Vol 8, Iss 2, p 28 (2022)
The article presents the test results of the co-firing process of a glycerine fraction derived from the production of liquid biofuels (fatty acid methyl esters) with coal. The test was performed in industrial conditions using a steam boiler with a ca
Externí odkaz:
https://doaj.org/article/083d7390ce454687a2483915232c2a00