magistrsko delo
Andraž Nadler (Author), Matija Tomšič (Mentor), Barbara Novosel (Thesis defence commission member), Simon Schnabl (Thesis defence commission member), Klementina Zupan (Co-mentor)

Abstract

Gasilska služba je v Sloveniji zelo razširjena, zato je zaščita gasilca v funkciji zmanjševanja tveganja ključnega pomena pri zagotavljanju varnosti. S kvalitetno zaščitno obleko lahko gasilca bolje zaščitimo za primer dela v okolju s povišanimi temperaturami. Na trgu je dostopnih vedno več materialov, ki so zdravju prijazni, hkrati pa prenesejo ekstremno povišane temperature. V razvoj takšnih materialov in raziskave za izboljšanje lastnosti tkanin proizvajalci vlagajo vedno več sredstev. V okviru dela smo preverili, kako se izgled vlaken tkanine zaščitnih gasilskih oblek spreminja ob izpostavljenosti povišanim temperaturam. Termična analiza je pokazala, da se pri izpostavljenosti povišanim temperaturam masa vzorcev manjša. Na izgubo mase vpliva tudi čas izpostavljenosti pogojem. Primerjali smo rezultate termične analize za različne vzorce novih tkanin. Izkazalo se je, da imajo vzorci različno termično obstojnost. Vzorce različnih materialov smo mikroskopsko analizirali ter jih primerjali z mikroskopsko analiziranimi vzorci uporabljenih gasilskih oblek z delno znano zgodovino. Izvedli smo tudi mikroskopsko analizo na vzorcih novih tkanin in rezultate primerjali med seboj. Ugotovili smo, da povišana temperatura vpliva na izgled vlaken in izgubo mase, daljša izpostavljenost pri isti povišani temperaturi pa izgled vlaken še dodatno spremeni. V slednjem primeru se poveča tudi izguba mase vzorca. Z mikroskopsko analizo smo ugotovili, da se vlakno tkanine zaščitne gasilske obleke pri izpostavljenosti povišani temperaturi tanjša, kar je povezano z izgubo mase vzorca. Tanjše vlakno tkanine zagotovo vpliva na mehanske in zaščitne lastnosti obleke ter posledično na varnost gasilca. Zaščitna gasilska obleka bi morala biti po vsaki uporabi, še posebej kadar je bila izpostavljena povišani temperaturi, globinsko pregledana in po potrebi zamenjana z novo.

Keywords

gasilstvo;gasilska osebna varovalna oprema;gasilska obleka;termična stabilnost;konfokalna mikroskopija;termična analiza;magistrska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [A. Nadler]
UDC: 614.84(043.2)
COBISS: 15242755 Link will open in a new window
Views: 558
Downloads: 166
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Other data

Secondary language: English
Secondary title: The impact of temperature and use of firefighter's protecting clothes on appearance of fabric fibers
Secondary abstract: Firefighting is quite widespread in Slovenia therefore protecting firefighters and reducing the risk they find themselves in is crucial for ensuring their safety. With high-quality protective clothing firefighters can be better protected in extreme temperature events. Health friendly materials that can withstand extremely high temperatures are nowadays commonly available on the market. Manufacturers are increasing their investment in research and development of materials to improve the properties of their fabrics. As part of this assignment, we examined how fibre properties of firefighter protective clothing change when exposed to elevated temperatures. Thermal analysis showed that exposure to elevated temperatures results in the mass loss of the samples. The mass loss depends also on the exposure time. We compared thermal analyses between the samples of different layered fabrics. It turned out that the mass loss varies with specimen type. The samples were further analysed utilizing the optical microscope and the results were also compared to the ones obtained for the fabrics cut from the used firefighting suits. We used the optical microscope analysis on new material samples and compared the results. We showed that the exposure to elevated temperatures affects the appearance of fibres and their mass loss. Longer exposure to high temperatures additionally affected the appearance of fibres and their mass loss increased. Similarly, with the exposure to high temperatures the fibres of the protective firefighter suits became thinner, which certainly affects the temperature and mechanical resistance of the suit and correspondingly the safety of the firefighters. When exposed to elevated temperatures, the protective firefighter suits should be thoroughly inspected and replaced with new ones, if necessary.
Secondary keywords: firefighter protective clothing;thermal stability;confocal microscopy;thermal analysis;
Type (COBISS): Master's thesis/paper
Study programme: 1000378
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Tehniška varnost
Pages: 52 str.
ID: 11683044