Author(s):
1. Marica Dugić, Rafinerija ulja Modriča, Republic of Srpska, Bosnia and Herzegovina
2. Branko Despotović, Rafinerija ulja Modriča, Republic of Srpska, Bosnia and Herzegovina
3. Pero Dugić, Republic of Srpska, Bosnia and Herzegovina
4. Novak Damjanović, Republic of Srpska, Bosnia and Herzegovina
5. Mirko Petković, Rafinerija ulja Modriča, Republic of Srpska, Bosnia and Herzegovina

Abstract:
Većina hidrauličnih sistema projektovana je za primjenu hidrauličnih fluida na bazi mineralnih ulja. Kod hidrauličnih sistema koji rade pod visokim pritiscima moguće je prskanje i isticanje fluida, a u okruženjima sa potencijalnim izvorima paljenja (iskre, otvoreni plamen, vruć metal) može doći do izazivanja požara. Alternativa je korišćenje fluida koji eliminišu ili značajno smanjuju ovu opasnost, a u praksi se nazivaju vatrootporni fluidi. Njihov razvoj tekao je uvođenjem mliječnih emulzija, prozirnih mikroemulzija, uvođenjem vode u fluide na bazi glikola, te uključivanjem različitih sintetskih komponenata bez vode, tako da se izborom fluida značajnije ne smanje performanse odgovarajućih hidrauličnih sistema. Uticajem strožijih propisa za zaštitu okoline i sigurnijim radnim uslovima, ograničava se izbor komponenata za formulisanje fluida otpornih na vatru, poput fosfatnih estara (zamjenjuju ih nove generacije sintetskih estara, poliol-estri) i mliječnih emulzija na bazi ulja (zamjenjuju ih sintetski vodeni rastvori). U radu su prikazani rezul tati ispitivanja uticaja sastava na funkcionalne karakteristike različitih tipova vatrootpornih fluida formulisanih na bazi ekološki prihvatljivih komponenata, koji se koriste u rudnicima, čeličanama, raznim mašinama i vozilima. Most hydraulic systems are designed for use of hydraulic fluids based on mineral oils. In hydraulic systems that operate under high pressures there is a possibility of spills and leakage of fluid, and in environments with potential sources of ignition (sparks, open flames, hot metal) there is a possibility of fire. An alternative is the use of fluid that eliminates or significantly reduces this hazard, and in practice are called fireproof fluids. Their development was through the introduction of milky emulsions, transparent microemulsions, introduction of water into glycol based fluids, and incorporation of various synthetic water-free components, so that the choice of fluids does not significantly reduce the performance of the corresponding hydraulic systems. Influence of stricter regulations for environmental protection and safer working conditions, limits the choice of components for the formulation of fire resistant fluids, such as phosphate esters (replacing them with new generations of synthetic esters, polyol esters) and milky oil based emulsions (replacing them with synthetic water dissolved). This paper presents the results of the study of the influence of composition on the functional characteristics of various types of fire-resistant fluids formulated on the basis of ecologically acceptable components used in mines, steel factories, various machines and vehicles.

Key words:
hidraulični sistem,otpornost na vatru,hidraulični fluidi,hydraulic system,fire resistance,hydraulic fluids

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
18.06.2018.

Conference:
Contemporary Materials 2018 - Savremeni Materijali