Utjecaj kemijske obrade drvene vune na zapaljivost drvo-cementnog kompozita

master's thesis

• Title (english): Influence of chemical treatment of wood wool on wood-cement composite flammability
• Author: Ivan Bratanović
• Mentor: Juraj Šipušić (mentor)
• Committee member: Juraj Šipušić (predsjednik povjerenstva)
• Committee member: Jasna Prlić Kardum (član povjerenstva)
• Committee member: Nevenka Vrbos (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2017-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering; Chemical Engineering in Material Development

Abstract

U ovom radu ispitana su toplinska svojstva pripravljenog drvo-cementnog kompozita. Za izradu ispitnih uzoraka korištena je drvena vuna dobivena od crnogoričnog drveća te komercijalni portland cement, CEM II. Drvena vuna korištena za ispitivanje dobre je kvalitete i mehanička svojstva uzorka su zadovoljavajuća pri svakom ispitanom omjeru drvena vuna/cement. Povećanjem udjela cementa u uzorku bolja je prekrivenost drvene vune cementom, a toplinska svojstva se relativno manje mijenjaju. Rezultati dobiveni testom gorenja pokazuju da cementni kompozit, zbog manjeg udjela gorive tvari, oslobađa manje topline u odnosu na čistu drvenu vunu. Cilj ovog rada je stjecanje teoretskog i praktičnog znanja o mjerenju toplinskih svojstava izolacijskih materijala, načinima mjerenja, normiranim metodama, te prednostima i nedostatcima tih metoda. Toplinska svojstva su ispitana pomoću više aparatura vlastite izrade. Dobiveni rezultati ukazuju na odlična izolacijska svojstva dobivenog kompozitnog materijala gustoće 300-400 kg/m^3, no neke metode je potrebno unaprijediti u daljnjim istraživanjima.

Abstract (english)

In this study thermal properties of wood-cement compound are tested. Wood wool made from pine tree is used to make samples blend with Portland cement, CEM II. Wood wool used in this paper is made from high quality tree so that her mechanical properties are satisfying in any given wood wool / cement ratio. With increase in ratio of cement in compound we can see better covering of surface of wool with cement, thermal properties aren’t changed a lot. Results gotten with burning test show that cement compound, duo to less flammable material, releases less heat compared to wood wool without cement. Priority of this work is to get some theoretical and experimental knowledge about measuring thermal properties of insolation materials, ways of measurement, standardized methods, and benefits and disadvantages of those methods. Thermal properties are tested by use of apparatus of our own making. Given results point to great insolation properties of compound material of 300-400 kg/m^3 density, but some methods are needed to be improved by farther researches.

• Keywords: drvena vuna; cement; cementni kompozit; toplinska svojstva
• Keywords (english): wood wool; cement; cement composite; thermal properties
• Language: croatian
• URN:NBN: urn:nbn:hr:149:306849
• Study programme: Title: Materials Science and Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-04-27 10:56:32