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Razvoj trdnosti urea-formaldehidnega lepilnega spoja pri lepljenju furnirja : diplomsko delo = Development of urea-formaldehyde adhesive bond at gluing of veneer : B. Sc. thesisČerne, Gregor MatijaV diplomski nalogi smo raziskovali razvoj trdnosti urea-formaldehidnega (UF) lepilnega spoja pri lepljenju bukovega furnirja. Lepilno mešanico smo pripravili iz 5 delov UF lepila v prahu in 3 delov ... vode. Furnir smo narezali na trakove z dolžino 117 mm in širino 20 mm ter jih uporabili za izdelavo dvoslojnega preizkušanca za strižni test. Testiranja smo opravili v laboratorijskih pogojih pri temperaturi 24,5 °C in relativni zračni vlažnosti 38,5 % ter vlažnosti furnirja 5,9 %. Naprej smo testirali preizkušance iz 0,9 mm debelih furnirjev, ki smo jih z UF lepilom lepili pri temperaturah 75 °C, 100 °C, 125 °C in 150 °C s sistemom za avtomatizirano vrednotenje zlepljenosti (ABES). Ugotovili smo, da je optimalna temperatura stiskanja bila 100 °C, saj smo pri tej temperaturi dosegli največjo povprečno strižno trdnost UF lepilnega spoja. Maksimalna strižna trdnost UF lepilnega spoja je bila najprej dosežena pri 150 °C in najkasneje pri 75 °C. Nato smo preverili vpliv treh debelin furnirja (0,5 mm, 0,9 mm in 1,4 mm) na razvoj trdnosti UF lepilnega spoja. Testiranja smo opravili z ABES napravo pri temperaturi 100 °C. Ugotovili smo, da se je utrjevanje UF lepila pri 0,5 mm debelem furnirju začelo najprej, pri 1,4 mm debelem furnirju pa najkasneje, kar je posledica daljšega časa segrevanja lepilnega spoja pri debelejših furnirjih.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [G. M. Černe], 2021Language - slovenianCOBISS.SI-ID - 64254723
Author
Černe, Gregor Matija
Other authors
Šernek, Milan |
Kariž, Mirko
Topics
urea-formaldehidno lepilo |
ABES |
strižna trdnost |
furnir |
debelina |
temperatura stiskanja |
urea-formaldehyde adhesive |
ABES |
shear strength |
veneer |
thickness |
press temperature
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Černe, Gregor Matija | |
Šernek, Milan | 16382 |
Kariž, Mirko | 29227 |
Source: Personal bibliographies
and: SICRIS
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