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Razvoj trdnosti polivinilacetatnega lepilnega spoja pri lepljenju furnirja
ID Šauperl, Toni (Author), ID Saražin, Jaša (Author), ID Šernek, Milan (Author)

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Abstract
V prispevku je predstavljen razvoj strižne trdnosti dveh polivinilacetatnih (PVAc) lepil: Mekol D3 in Mekol SPECIAL pri lepljenju furnirja v odvisnosti od časa stiskanja. Poleg testiranja trdnosti lepilnega spoja po vročem stiskanju smo proučevali tudi vpliv hlajenja na končno trdnost PVAc lepilnega spoja. Graditev strižne trdnosti PVAc lepilnega spoja med vročim stiskanjem smo ugotavljali s pomočjo sistema za avtomatizirano vrednotenje zlepljenosti (ABES). Temperatura stiskanja je bila konstantna in je znašala 80 °C medtem, ko smo čas stiskanja povečevali od 30 do 300 sekund s 30-sekundnim intervalom. Vpliv hlajenja na končno trdnost PVAc lepilnega spoja smo ugotavljali po 5-sekundnem in 30-sekundnem hlajenju. Na podlagi raziskave smo ugotovili, da je strižna trdnost PVAc lepilnih spojev naraščala s časom stiskanja in se je po določenem času približala konstantni vrednosti. Ugotovili smo značilne razlike v trdnosti spojev, zlepljenjih z Mekol D3 in Mekol SPECIAL ter statistično značilen vpliv hlajenja na trdnost lepilnih spojev.

Language:Slovenian
Keywords:ABES, furnir, lepilni spoji, PVAc, strižna trdnost, temperatura
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publication status:Published
Publication version:Version of Record
Year:2020
Number of pages:Str. 97-106
Numbering:Let. 69, št. 2
PID:20.500.12556/RUL-125681 This link opens in a new window
UDC:630*824.839
ISSN on article:0024-1067
URN:URN:NBN:SI:doc-NNHL7PS0
DOI:10.26614/les-wood.2020.v69n02a04 This link opens in a new window
COBISS.SI-ID:44527875 This link opens in a new window
Publication date in RUL:01.04.2021
Views:1112
Downloads:264
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Record is a part of a journal

Title:Les
Shortened title:Les
Publisher:Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze
ISSN:0024-1067
COBISS.SI-ID:13940224 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:01.04.2021

Secondary language

Language:English
Title:Development of polyvinyl acetate adhesive bond strength at gluing of veneer
Abstract:
This article presents the development of the shear strength of two polyvinyl acetate (PVAc) adhesives: Mekol D3 and Mekol SPECIAL when bonding veneer depending on pressing time. Besides testing the strength of the adhesive bond after hot pressing, we also investigated the effect of cooling on the final strength of PVAc adhesive bonds. The shear strength development of the PVAc adhesive bond during hot pressing was determined using an Automated Bonding Evaluation System (ABES). The pressing temperature was constant and was 80 °C, while the pressing time was extended from 30 to 300 seconds in 30-second intervals. The effect of cooling on the final strength of the PVAc adhesive bond was determined after cooling time of 5 and 30 seconds, respectively. Based on the investigations, we found that the shear strength of PVAc adhesive bonds increased with the pressing time and approached to a constant value after a certain time. We found significant differences in the strength of adhesive bonds glued with Mekol D3 and Mekol SPECIAL and a statistically significant effect of cooling on the strength of the adhesive bonds.

Keywords:veneer, adhesive bond, shear strength, temperature

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