Vpliv plazemske obdelave površine lesa na lepljenje bukovine s poliuretanskim lepilom

Capuder, Martin (author), Bizjak Štrus, Neja (author), Dahle, Sebastian (author), Šega, Bogdan (author), Šernek, Milan (author)

V raziskavi je bil proučen vpliv plazemske obdelave površine na lepljenje bukovine s konstrukcijskim enokomponentnim poliuretanskim lepilom. Uporabljen je bil les navadne bukve (Fagus sylvatica L.) brez obarvanja in les bukve z rdečim srcem, učinkovitost lepilnih spojev pa je bila ovrednotena s testiranjem strižne trdnosti in delaminacije v skladu s standardom SIST EN 14080:2013. Rezultati so pokazali, da je plazemska obdelava izboljšala omočljivost površine, vendar ni prispevala k izboljšanju kakovosti lepilnih spojev. Pri bukovini z rdečim srcem je bila ugotovljena višja stopnja loma po lesu, pri čemer pa so bile strižne trdnosti lepilnega spoja nižje. Z uporabo poliuretanskega lepila pri lepljenju bukovine smo v večini primerov dosegli zahteve standarda glede strižne trdnosti lepilnega spoja, vendar pa lepilni spoji niso dosegli zahtev standarda za delaminacijo lepilnih spojev. Raziskava ni pokazala večjih razlik med lepljenjem bukovine brez obarvanj in bukovine z rdečim srcem.

• Language: Slovenian
• Keywords: konstrukcijsko lepljenje, les, navadna bukev, Fagus sylvatica, rdeče srce, plazemska obdelava površine, poliuretansko lepilo
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: Str. 35-48
• Numbering: Let. 73, št. 2
• PID: 20.500.12556/RUL-165652
• UDC: 630*824.85:52-726
• ISSN on article: 2590-9932
• DOI: 10.26614/les-wood.2024.v73n02a04
• COBISS.SI-ID: 218585603
• Publication date in RUL: 11.12.2024

Record is a part of a journal

• Title: Les
• Publisher: Biotehniška fakulteta, Oddelek za lesarstvo, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze v Ljubljani
• ISSN: 2590-9932
• COBISS.SI-ID: 290940672

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: English
• Title: Influence of plasma surface treatment on bonding of beech wood with polyurethane adhesive

Abstract

The study investigated the effects of plasma surface treatment on bonding beech wood with structural one-component polyurethane adhesive. The wood used included European beech (Fagus sylvatica L.) without discolouration and red-heart beech, and the efficiency of the adhesive joints was evaluated by testing shear strength and delamination according to the SIST EN 14080:2013 standard. The results showed that plasma treatment improved the wettability of the surface but did not contribute to enhancing the quality of the adhesive joints. In the case of red-heart beech, a higher degree of wood failure was observed, while the shear strengths of the adhesive joints were lower. Using polyurethane adhesive for bonding beech wood did not meet the standard requirements for adhesive joint delamination. The study did not show significant differences in bonding between beech wood without discolouration and red-heart beech.

• Keywords: structural bonding, wood, European beech, red heart, plasma surface treatment, polyurethane adhesive