Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Leszek Czechowski"'
Publikováno v:
Materials, Vol 17, Iss 8, p 1829 (2024)
The subject of this research is the development of epoxy composites with a defined service life for the purpose of seat elements in rail vehicles, which will be more environmentally friendly. The produced materials based on epoxy resin filled with PL
Externí odkaz:
https://doaj.org/article/c1b37a18e71d4ed8819efeef60abada8
Publikováno v:
Materials, Vol 17, Iss 7, p 1592 (2024)
Epoxy resin compositions are used in modern railways, replacing other materials. However, epoxy composites in public transport are subject to many requirements, including that they should be flame retardant and resistant to weather conditions. The ai
Externí odkaz:
https://doaj.org/article/3c9cb2897c7f4784a320c44192776509
Publikováno v:
Archives of Civil Engineering, Vol vol. 69, Iss No 3 (2023)
The work includes the results of numerical, analytical-numerical and experimental study into the influence of load eccentricities with regard to major axis on post-buckling behaviour and load-carrying capacity of thin-walled cold-formed steel lipped
Externí odkaz:
https://doaj.org/article/492cbe480f7940d2a64ba381ca9f15a4
Publikováno v:
Materials, Vol 17, Iss 5, p 1069 (2024)
The aim of this work was to obtain epoxy-based composite structures with good mechanical performance, high aging resistance, and an improved degradability profile. For this purpose, powdered polylactide in the amount of 5, 10, 20, 30, and 40 phr was
Externí odkaz:
https://doaj.org/article/ef9691868e82425ebf68bc65bdc4d24e
Autor:
Malgorzata Latos-Brozio, Anna Masek, Leszek Czechowski, Aleksandra Jastrzębska, Sebastian Miszczak
Publikováno v:
Molecules, Vol 29, Iss 2, p 512 (2024)
This research concerns the modification of commercially available epoxy resin with flame retardants in order to obtain aging-resistant and antimicrobial polymeric materials with a plant stabilizer dedicated to use in rail transport. Polymer compositi
Externí odkaz:
https://doaj.org/article/2b23d682402d4aa7af44ca99778fb88e
Publikováno v:
Materials, Vol 16, Iss 24, p 7513 (2023)
The study aims to present the results of paper compression under an axial load. Different heights of samples subjected to compression were taken into account. The main goal of the analysis was to determine experimentally the maximum compression load.
Externí odkaz:
https://doaj.org/article/95bbb75e1c654df2b83982ed2bf7debe
Epoxy Resin-Based Materials Containing Natural Additives of Plant Origin Dedicated to Rail Transport
Autor:
Anna Masek, Olga Olejnik, Leszek Czechowski, Filip Kaźmierczyk, Sebastian Miszczak, Aleksandra Węgier, Sławomir Krauze
Publikováno v:
Materials, Vol 16, Iss 22, p 7080 (2023)
The presented study is focused on the modification of commercially available epoxy resin with flame retardants by means of using natural substances, including quercetin hydrate and potato starch. The main aim was to obtain environmentally friendly ma
Externí odkaz:
https://doaj.org/article/0c56f094504e48d3bc3d24bee12807ce
Autor:
Leszek Czechowski, Slawomir Kedziora, Elvin Museyibov, Markus Schlienz, Piotr Szatkowski, Martyna Szatkowska, Jacek Gralewski
Publikováno v:
Materials, Vol 15, Iss 22, p 8135 (2022)
The present paper analyses the properties of printed polylactic acid (PLA) samples with admixtures of graphene nanopowder (GNP) at wt. 1%, 2% and 4%. The pure polylactide and admixed polylactide printed samples were examined to determine their chemic
Externí odkaz:
https://doaj.org/article/d38d92d301e14b1787597597d73971e2
Publikováno v:
Materials, Vol 15, Iss 20, p 7167 (2022)
This study aims to present various forms of cellulose, whose shape depends on the source of origin, and to demonstrate the differences in the influence on the properties of materials produced with its participation. For this purpose, composites with
Externí odkaz:
https://doaj.org/article/ed4df55e064e421fac304ca761c53289
Autor:
Leszek Czechowski, Gabriela Kmita-Fudalej, Włodzimierz Szewczyk, Jacek Gralewski, Maria Bienkowska
Publikováno v:
Materials, Vol 14, Iss 23, p 7453 (2021)
This paper concerns the analysis of five-layer corrugated paperboard subjected to a four-point bending test. The segment of paperboard was tested to determine the bending stiffness. The investigations were conducted experimentally and numerically. Th
Externí odkaz:
https://doaj.org/article/f6a94fc9bdf5401c91c40f12988c1a0d