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Vpliv površine iverne plošče na oprijemnost dekorativnega papirja : diplomsko delo
Cimerman, Žiga (Author), Medved, Sergej (Mentor) More about this mentor... This link opens in a new window, Petrič, Marko (Reviewer)

URLURL - Presentation file, Visit http://www.digitalna-knjiznica.bf.uni-lj.si/dn_cimerman_ziga.pdf This link opens in a new window

Abstract
Raziskovali smo vpliv površine iverne plošče na oprijemnost dekorativnega papirja. Vpliv smo ugotavljali na nebrušeni in brušeni 3-slojni iverni plošči debeline 18 mm, obloženi z belim dekorativnim papirjem gramature 70 g/m2. V laboratorijski stiskalnici smo obložili 5 nebrušenih in 5 brušenih ivernih plošč in jih po kondicioniranju analizirali. Analizirali smo tudi surovo nebrušeno in brušeno iverno ploščo. Ugotovili smo, da imata vlaga in visoka temperatura v fazi stiskanja velik vpliv na površino plošče. Z FT-IR spektroskopijo smo ugotovili, da pride do največjih kemijskih sprememb med valovnima številoma od 1155 cm-1 do 1731 cm-1. Kemijske spremembe imajo vpliv na kontaktni kot destilirane vode in vrednost pH. Vrednosti kontaktnega kota so bile pri nebrušeni iverni plošči okoli 90°, pri brušeni pa okoli 50°. Meritve vrednosti pH so pokazale, da se pH lesa s časom spreminja. Na oblepljenih ploščah smo izvedli test čvrstosti površine, otrdelosti, odpornosti proti vodni pari in test odpornosti proti substancam. Dobljeni rezultati so bili boljši na zgornji strani obeh tipov ivernih plošč, razen pri testu otrdelosti površine. Pokazali so, da je bila v našem primeru nebrušena iverna plošča v primerjavi z brušeno boljša.

Language:Slovenian
Keywords:iverna plošča, FT-IR spektroskopija, kontaktni kot, vrednost pH, lastnosti površine
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2008
Publisher:[Ž. Cimerman]
Number of pages:VII, 42 f.
Place:Ljubljana
UDC:630*862.2
COBISS.SI-ID:1688713 Link is opened in a new window
Views:698
Downloads:210
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Secondary language

Language:English
Abstract:
Our aim was to find influence of particleboard surface on adhesion of decorative paper. We compared non-sanded and sanded particleboards. We used 3-layer particleboard (18 mm thick) and white impregnated decorative paper (70g/m2). 5 non-sanded and 5 sanded particleboards were pressed on a laboratory press. Raw non-sanded and sanded particleboards were also analysed. It was found out that moisture and high temperature in the pressing phase have influence on particleboard surface. Using FT-IR spectroscopy we found out that the largest chemical changes are on wave range from 1155 cm-1 to 1731 cm-1, having influence on contact angle and pH value. The non-sanded particleboard had contact angle of water around 90°, and the sanded one around 50°. Measurements of pH value showed that pH value changes after few days. Surfaced paricleboards were tested on surface hardness, the degree of hardening, resistance of steam and resistance of stain. It was found out that the upper side of both types of particleboards is better than lower, except in the case of hardening degree. The results show that non-sanded particleboards are better than sanded ones.

Keywords:particleboard, FT-IR spectroscopy, contact angle, pH value, surface properties

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