Utjecaj temperature i vremena sušenja na upojnost papira

Damjanović, Pavao (2011) Utjecaj temperature i vremena sušenja na upojnost papira. Diploma work - Pre-Bologna programme. Grafički fakultet. [Mentor: Barbarić-Mikočević, Željka].

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Abstract

U ovom radu za ispitivanje upojnosti fotokopirnih papira Cobbovom metodom korišteni su papiri različitih proizvođača dostupni na hrvatskom tržištu: Report, Biromax i IQ. Papirima je određen maseni udio vlage, pepela i kalcijevog karbonata. Tijekom određivanja upojnosti mijenjani su uvjeti ubrzanog starenja, tj. vrijeme (od 4,5 do 0,5 sati) i temperatura (od 22 do 120OC). Rezultati su pokazali kako se upojnost znatno mijenja s promjenom uvjeta ubrzanog starenja fotokopirnih papira. S porastom temperature od 22 do 120OC upojnost Report fotokopinog papira moguće je odrediti starenjem u vremenu od 4,5 sata, Biromax fotokopirnog papira u vremenu starenja od 1,0 sata, a IQ fotokopirnog papira u vremenu starenja od samo 0,5 sati.

Item Type:	Diploma work - Pre-Bologna programme
Mentor name:	Barbarić-Mikočević, Željka
Defence date:	19 July 2011
Abstract in english:	This paper examines photocopier paper absorption of different types of paper that are available on Croatian market: Report, Biromax and IQ. After determination of mass percentage of moisture, ash and calcium carbonate of the photocopier paper the absorption examination is made using the Cobb method. During the process of evaluation of paper absorption, we change condition of rapid aging, time (from 4,5 h to 0,5 h) and temperature (from 22°C to 120°C). Results show that absorption is signifi cantly changing in accordance with the change of rapid aging time of photocopier paper. When the temperature increased (from 22°C to 120°C) the aging period of Report photocopier paper at 120°C was 4,5 h, Biromax photocopier paper at 120°C was 1 h and that of IQ photocopier paper at 120°C was only 0,5 h.
Uncontrolled Keywords:	fotokopirni papir, upojnost, ubrzano starenje
Keywords in english:	photocopier paper, absorption, rapid aging
Subjects:	TECHNICAL SCIENCES > Graphic Technology
Institution:	Grafički fakultet
City:	Zagreb
Number of Pages:	49
Callnumber:	bar 2011 dam
Inventory number:	D924
Status:	Unpublished
Date Deposited:	15 Nov 2013 21:44
Last Modified:	30 Apr 2014 13:26
URI:	http://eprints.grf.unizg.hr/id/eprint/1259

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