Izboljšanje lastnosti ivernih plošč z dodajanjem naravnih in sintetičnih vlaken : diplomski projekt

Velkavrh, Aleš (author), Medved, Sergej (mentor), Šernek, Milan (reviewer)

Raziskovali smo vpliv dodajanja različnih materialov v 3-slojno iverno ploščo. Izdelali smo več različnih kombinacij okrepljenih plošč. Kot okrepitveni material smo uporabili: furnir, slamo, juto in PVC mrežo. Izdelanim ploščam smo določili upogibno trdnost, modul elastičnosti in gostoto. Pri izvajanju meritev smo upoštevali pravila standardov SIST EN 310 in SIST EN 323. S primerjavo osnovne plošče in plošče z dodanim okrepitvenim materialom smo ovrednotili vpliv dodanega materiala. Pridobljene vrednosti smo primerjali še s predpisanimi vrednostmi za OSB plošče po standardu EN 300. Po naših ugotovitvah je najvišje vrednosti dosegla plošča okrepljena s furnirjem na površini. Postavitev furnirja na mejo slojev ali v sredico mehanskih lastnosti plošč ne spremeni tako izrazito. Potenciala mrežnih materialov nismo uspeli izkoristiti v celoti. Sestavljeni so iz več vlaknatih niti. Vlakna v niti med seboj niso trdno povezana, zato se obremenitev ne prenese na celoten presek.

• Language: Slovenian
• Keywords: lesne plošče, iverne plošče, furnir, mehanske lastnosti
• Work type: Diploma project paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [A. Velkavrh]
• Year: 2013
• Number of pages: X, 39 f., [9] f. pril.
• PID: 20.500.12556/RUL-117566
• UDC: 630*862.2
• COBISS.SI-ID: 2169737
• Publication date in RUL: 16.07.2020

Secondary language

• Language: English
• Title: Improving the properties of particleboard by adding natural and synthetic fibres

Abstract

Effects of the addition of various materials to particleboard were investigated. Many different combinations of reinforced panels were produced. The materials used for reinforcement included: veneer, straw, jute and PVC net. The bending strength, modulus of elasticity and density of the fabricated panels were determined. The measurements were taken in accordance with the EN 310 and EN 323 standards. The reinforced panels were compared to the base panel to evaluate the impact of the additional material. The measurement values obtained were further compared for OSB according to EN 300. It was found that the best panel in terms of the determined properties was the one having the veneer on surface. Placement of the veneer in the board middle or between surface and core layer didnt effect properties significantly. It was not possible to fully exploit the potential of the netting. The netting consisted of several fibrous threads which were not strongly coupled so the load was not transferred to the cross-section

• Keywords: wood-based panels, particle board, veneer, mechanical properties