Vpliv deleža zunanjega sloja iverne plošče na njene fizikalne in mehanske lastnosti : diplomsko delo (univerzitetni študij) = Impact of the particleboard surface layer proportion on its physical and mechanical qualities : graduation thesis (university studies)
Tomažič, Miro
Izdelali smo 5 različic laboratorijske 3-slojne iverne plošče nazivne debeline 16,0 mm in prostorninske mase 0,7 g/cm3, pri katerih smo spreminjali razmerje med zunanjim in srednjim slojem. Plošče so ...imele 15, 25, 35, 50 in 65 % delež zunanjega sloja. Za izdelavo plošč smo uporabili iverje iz proizvodnje, ki je bilo odvzeto pred strojem za oblepljanje iverja, za oblepljanje iverja smo uporabili urea-formaldehidno lepilo. Faktor oblepljanja v zunanjem sloju je bil 11,5%, v srednjem pa 7,5 %.Na izdelanih ploščah smo ugotavljali debelino, prostorninsko maso, upogibno trdnost, modul elastičnosti, razslojno trdnost, debelinski nabrek ter vertikalno porazdelitev prostorninske mase. Prostorninske mase so pri vseh različicah v povprečju enake. Upogibna trdnost in modul elastičnosti naraščata z naraščajočo povprečno prostorninsko maso plošče. Z naraščanjem deleža zunanjega soja se veča upogibna trdnost plošč. Debelinski nabrek se z naraščajočim deležem zunanjega soja zmanjšuje; vendar pa narašča, če narašča prostorninska masa srednjega sloja. Ni nobene korelacije med razslojno trdnostjo in deležem zunanjega sloja.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [M. Tomažič], 2001
Knjižnica BF za lesarstvo dn 0000000702 IN: 020010107
Knjižnica BF za lesarstvo dn 702 IN: 020010107
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