Uporaba polimernih kompozitov v ladjedelništvu

zaključna naloga Razvojno raziskovalnega programa I. stopnje Strojništvo

Vesna Škrlj (Author), Lidija Slemenik Perše (Mentor)

Abstract

Polimerni kompoziti se v ladjedelništvu uporabljajo že dobrega pol stoletja, saj omogočajo gradnjo bolj ekonomičnih in trajnejših plovil. Kompoziti imajo mnoge prednosti ter tudi nekaj pomanjkljivosti. Ena od večjih pomanjkljivosti polimernih kompozitov je gorljivost, ki smo jo v predstavljeni nalogi testirali na izbranih materialih na podlagi standarda UL 94 % horizontalni test. Za testiranje smo izbrali dve epoksi smoli z visoko temperaturo steklastega prehoda, katerima smo dodajali zaviralec gorenja, aluminijev hidroksid. Po testiranju smo prišli do ugotovitve, da se večja koncentracija zaviralca gorenja odraža v boljši odpornosti na gorenje. Z večanjem vsebnosti aditiva smo dosegli nižjo hitrost gorenja in manjšo količino zgorelega materiala. Aditivi prav tako vplivajo na mehanske lastnosti materialov, zato smo pri proučevanih vzorcih izvedli natezni test, čigar rezultati so pokazali, da se togost in krhkost smole načeloma povečujeta z večanjem vsebnosti aditiva. Kljub izbiri materiala z visoko temperaturo steklastega prehoda in dodatku zaviralca gorenja zaenkrat pri uporabi proučevanih polimernih kompozitov še ne moremo zagotavljati enake požarne varnosti, kot jo zagotavlja jeklo.

Keywords

diplomske naloge;ladjedelništvo;polimerni kompoziti;test gorljivosti;termoseti;zaviralci gorenja;gorljivost;

Data

Language:	Slovenian
Year of publishing:	2019
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[V. Škrlj]
UDC:	629.5:678.6:539.918(043.2)
COBISS:	16950811
Views:	1392
Downloads:	292
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Use of polymer compoistes in shipbuilding
Secondary abstract:	Polymer composites have been used in shipbuilding for over half a century, as they enable more economical and durable ship construction. Composites have numerous advantages, but also some disadvantages. Their biggest shortcoming is their flammability, which was tested in the presented thesis with selected material samples in accordance with the UL 94 standard - Horizontal Test. For the purpose of testing, two epoxy resins with a high glass transition temperature were chosen. A flame retardant, aluminium hydroxide, was added in various concentrations. The results showed that a higher concentration of flame retardant resulted in a slower rate of combustion and less material was burnt. Because additives affect the mechanical properties of materials, tensile tests on the chosen samples were performed. The results showed that stiffness and brittleness increase with increasing additive content. Despite choosing a material with a relatively high glass transition temperature and the addition of a flame retardant, we still cannot guarantee the same fire safety as that of steel when using the studied material composites.
Secondary keywords:	shipbuilding;polymer composites;burning test;thermosets;flame retardants;flammability;
Type (COBISS):	Final paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XIV, 36 f.
ID:	11221970