Uporaba visokofrekvenčne tehnologije za lepljenje furnirnih vezanih plošč z mešanicami utekočinjenega lesa in MUF lepila : diplomsko delo - visokošolski strokovni študij = The use of high-frequency technology for bonding veneer plywood with mixtures od liquefied wood and MUF adhesives : graduation thesis - higher professional studies
Veberič, Rok
Proučevali smo mehanske in fizikalne lastnosti furnirnih bukovih vezanih plošč, ki so bile z visokofrekvenčno tehnologijo (VF) zlepljene z različnimi mešanicami melamin-urea-formaldehidnega (MUF) ...lepila in utekočinjenega lesa (UL). Iskali smo primerno mešanico MUF in UL, ki še ustreza standardu SIST EN 314-2:1996, kjer mora strižna trdnost spoja za izpolnjevanje zahtev dosegati večje ali enako vrednost 1 N/mm2. Pripravili smo 5 lepilnih mešanic z različnim deležem UL in MUF lepila. Uporabili smo razmerja: 100MUF+0UL, 90MUF+10UL, 80MUF+20UL, 70MUF+30UL in 60MUF+40UL. Iz pripravljenih 3-slojnih furnirnih vezanih plošč dimenzij 500 mm x 500 mm x 4,8 mm smo izžagali preskušance za ugotavljanje strižne trdnosti lepilnega spoja, upogibne trdnosti in modul elastičnosti ter za določitev gostote in vlažnosti zlepljenih plošč. Zahtevam standarda SIST EN 314-2 za uporabo v vlažnih in zunanjih pogojih so ustrezale plošče zlepljenje z mešanicami 100MUF+0UL, 90MUF+10UL in MUF80+UL20, torej z majhnim deležem UL (do 20 delov). Za lepljenje furnirnih plošč za uporabo v suhih pogojih pa so ustrezala vsa uporabljena razmerja med MUF in UL.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [R. Veberič], 2015
Knjižnica BF za lesarstvo vsn 0000000384 IN: 020150027
Knjižnica BF za lesarstvo vsn 384 IN: 020150027
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