Utjecaj temperature i vremena sušenja na upojnost papira

master's thesis

• Author: Pavao Damjanović
• Mentor: Željka Barbarić-Mikočević (mentor)
• Committee member: Željka Barbarić-Mikočević (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2011-07-19, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

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.

Abstract (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.

• Keywords: fotokopirni papir; upojnost; ubrzano starenje
• Keywords (english): photocopier paper; absorption; rapid aging
• Language: croatian
• URN:NBN: urn:nbn:hr:216:527128
• Study programme: Title: Graphic technology; specializations in: Graphic technology, Design of graphic products; Course: Graphic technology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-04-17 09:26:08