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Lesne plošče in ekstremni pogoji uporabe
Ogrinc, Nives (Author), Medved, Sergej (Mentor) More about this mentor... This link opens in a new window, Lesar, Boštjan (Co-mentor)

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Abstract
Uporabnost lesnih ploščnih kompozitov je pogosto omejena oz. kritizirana zaradi njihovega obnašanja v prisotnosti vode. Velikokrat so te kritike upravičene, vendar lahko s primerno izbiro kompozita in ustrezno obdelavo površine vpliv vode na odpornost kompozita proti vodi signifikantno izboljšamo. S tem namenom smo izbrane lesne ploščne kompozite (iverna plošča za pohištvene namene, konstrukcijska iverna plošča, OSB in furnirna plošča) izpostavili površinskemu delovanju vode. Analizirali smo stični kot (kot omočitve), površinsko vpijanje in odpornost proti delovanju vode površinsko nezaščitenih in zaščitenih preskušancev. Za zaščito površine smo uporabili melaminsko smolo, mešanico melaminske smole in voska ter melaminske smole in parafinske emulzije. Ugotovili smo, da lahko z zaščito površine signifikanto izboljšamo odpornost proti delovanju vode. Najboljši rezultat smo dobili pri uporabi mešanice melaminske smole in voska. Največjo odpornost proti delovanju vode smo ugotovili pri furnirni plošči, zaščiteni z mešanico melaminske smole in voska.

Language:Slovenian
Keywords:ekstremni pogoji, kompoziti, kontaktni kot, navzem vode, zaščita
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2017
Publisher:[N. Ogrinc]
UDC:630*862.9
COBISS.SI-ID:2812809 Link is opened in a new window
Views:584
Downloads:361
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Secondary language

Language:English
Title:WOOD PANEL COMPOSITES AND EXTREME CONDITIONS
Abstract:
Use of wood based composites is often limited or criticized for their behavior in the presence of water. These criticisms are often justified by choosing the appropriate composite and proper surface treatment so the influence of water on the overall performance of the composite can be significantly improved. That is why we performed surface water absorption on selected wood based composites (plywood, particleboard, OSB and particle board for construction use). We analyzed the contact angle, surface absorption and resistance of water on surface-unprotected and protected specimens. We used melamine resin, a mixture of melamine resin and wax, and melamine resin and paraffin emulsion to protect the surface. We have found that protecting the surface can significantly improve water resistance. The best result was obtained using a mixture of melamine resin and wax. The highest resistance of water was found in plywood protected with a mixture of melamine resin and wax.

Keywords:extreme conditions, composites, contact angle, surface absorption, protection

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