diplomsko delo
Alexander Simić (Author), Bogdan Šega (Reviewer), Sergej Medved (Mentor)

Abstract

Ugotavljali smo možnost uporabe visoke-frekvence za izdelavo lesno-plastičnega kompozita ter določitev optimalnih pogojev za stiskanje lesno-plastičnih kompozitov v visoko-frekvenčni stiskalnici. Uporabili smo frakcije iveri manjše od 1 mm. Kot vezivno smo uporabili polietilen (PE). Za določitev optimalnih pogojev stiskanja smo izdelali 3 serije plošč, kjer smo spreminjali čas stiskanja, vlažnost iveri in delež lesa. Osnova za določitev najbolj primernih pogojev stiskanja in strukture plošče sta bili natezna in upogibna trdnost. Za izdelavo lesno-plastičnih kompozitov v visoko-frekvenčni stiskalnici se je kot optimalna izkazala vlažnost iveri 26 %, čas stiskanja 17,5 min pri izbirnem stikalu moči 3, anodnem toku 1 A in mrežnem toku 0,5 A. Optimalen delež lesa v kompozitu je med 50 % in 75 %. Izdelali smo še eno serijo kjer smo primerjali lastnosti kompozita izdelanega v klasični in visoko-frekvenčni stiskalnici. Kompozit izdelan v visoko-frekvenčni stiskalnici je imel boljše lastnosti kot kompozit izdelan v klasični stiskalnici.

Keywords

visoka frekvenca;lesno-plastični kompozit;polietilen;les;iverje;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [A. Simić]
UDC: 630*862
COBISS: 166608131 Link will open in a new window
Views: 26
Downloads: 3
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Other data

Secondary language: English
Secondary title: Manufacturing of wood-plastic composites with a high-frequency press
Secondary abstract: We investigated the possibility of using high-frequency technology for the production of wood-plastic composites and determining the optimal conditions for compressing such composites in a high-frequency press. We used wood chip fractions smaller than 1 mm and polyethylene (PE) as the binding material. We created three series of panels to determine the optimal compression conditions, varying compression time, wood chip moisture content, and wood content. The basis for determining the most suitable compression conditions and panel structure was tensile and flexural strength. For the production of wood-plastic composites in a high-frequency press, we found that the optimal wood chip moisture content was 26%, with an optimal compression time of 17.5 minutes using a power selection switch set to 3, an anodic current of 1 A, and a mesh current of 0.5 A. The optimal wood content in the composite was found to be between 50% and 75%. We also produced another series to compare the properties of composites made in a traditional press and a high-frequency press. The composite made in the high-frequency press exhibited better properties than the one made in the traditional press.
Secondary keywords: high frequency;wood-plastic composite;polyethylene;wood;chips;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages: 1 spletni vir (1 datoteka PDF (X, 33 str., [11] str. pril.))
ID: 19963957