Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Martin Zachar"'
Publikováno v:
Polymers, Vol 16, Iss 18, p 2657 (2024)
The study investigates the determination of selected fire properties of spruce wood, specifically the charring rate, using a modified testing method described and registered at the Industrial Property Office of the Slovak Republic PUV 50121-2020, uti
Externí odkaz:
https://doaj.org/article/6222381bd1bf4e1f8fe2ac1467829e61
Autor:
Martin Zachar, Jan Furch
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-16 (2023)
Abstract Engine oil forms a complex system with a number of features. These features consist of hydrocarbons, various natural, or synthetic polymers. The irradiation of polymers becomes an integral part of modern industry. The lubrication, charge, th
Externí odkaz:
https://doaj.org/article/b03621a256e34cf8a5910d5beb3d69f6
Publikováno v:
Polymers, Vol 14, Iss 20, p 4465 (2022)
Particleboards containing waste rubber (tires and mixtures of isolators and carpets) filler were evaluated from the point of view of its flammability. The assessment of the utilization of these composites in the construction industry was analyzed thr
Externí odkaz:
https://doaj.org/article/70151ec3f5484d26b55e25060ea57d18
Publikováno v:
Polymers, Vol 14, Iss 16, p 3284 (2022)
The use of polymer composites as a replacement for commonly applied materials in industry has been on the rise in recent decades. Along with the development of computer software, the desire to predict the behavior of new products is thus increasing.
Externí odkaz:
https://doaj.org/article/79cf2a9e35c94cd0917e2bb973398bde
Publikováno v:
Materials, Vol 14, Iss 17, p 4989 (2021)
The paper assesses the influence of the heat flux on spruce wood (Picea abies L.) behavior. The heat flux was performed at 15, 20, 25, and 30 kW·m−2. The fire-technical properties, such as the mass burning rate, charring thickness, charring rate,
Externí odkaz:
https://doaj.org/article/930e06ef0888402cb62d8945c52ec83a
Publikováno v:
Polymers, Vol 13, Iss 14, p 2286 (2021)
Miniaturization of electronic devices leads to new heat dissipation challenges and traditional cooling methods need to be replaced by new better ones. Polymer heat sinks may, thanks to their unique properties, replace standardly used heat sink materi
Externí odkaz:
https://doaj.org/article/15309660eea8428c930257496d08e649
Publikováno v:
Polymers, Vol 13, Iss 13, p 2059 (2021)
The paper deals with the assessment of the age of oak wood (0, 10, 40, 80 and 120 years) on its fire resistance. Chemical composition of wood (extractives, cellulose, holocellulose, lignin) was determined by wet chemistry methods and elementary analy
Externí odkaz:
https://doaj.org/article/8888167cc98a45bcb1bac123ffe41edb
Importance of Melt Flow Direction during Injection Molding on Polymer Heat Sinks’ Cooling Efficiency
Publikováno v:
Polymers, Vol 13, Iss 8, p 1186 (2021)
Polymers with highly conductive fillers could possibly replace standardly used materials, such as aluminum and copper alloys, for passive cooling purposes. The main problem of the composite polymer-based heat sinks is that their high thermal conducti
Externí odkaz:
https://doaj.org/article/eb0afc92347e446f9c8b359939e11c6b
Autor:
Michal Guzej, Martin Zachar
Publikováno v:
Energies, Vol 12, Iss 13, p 2609 (2019)
In the past decade, the condensation of internal air humidity in automotive headlamps has become more prevalent than ever due to the increased usage of a new light source—LEDs. LEDs emit far less heat than previously-used halogen lamps, which makes
Externí odkaz:
https://doaj.org/article/aa68a26f975c4e6f887e05cb7843daad
Publikováno v:
Drvna Industrija, Vol 63, Iss 3, Pp 217-223 (2012)
This paper deals with the determination of selected fire properties of spruce wood. It describes the general characteristics of spruce wood, microscopic and macroscopic features. Broad application of this material requires the assessment of its prope
Externí odkaz:
https://doaj.org/article/15a8389fefec4d88abcb27a5647f15de