Bending properties of hardwood-based layered wood composites bonded with polyurethane adhesive modified by thermosets
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F25%3A102237" target="_blank" >RIV/60460709:41320/25:102237 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27730/25:10256275
Result on the web
<a href="https://doi.org/10.1016/j.conbuildmat.2024.139831" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2024.139831</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.conbuildmat.2024.139831" target="_blank" >10.1016/j.conbuildmat.2024.139831</a>
Alternative languages
Result language
angličtina
Original language name
Bending properties of hardwood-based layered wood composites bonded with polyurethane adhesive modified by thermosets
Original language description
One of the effects of climatic change is a reduction in the availability of traditional wood resources, especially softwood. As a result, hardwood-based layered composites and their ever-increasing use drive the interest in hardwood bonding. However, forming such composites presents several challenges that require modifying adhesive systems. The work presented deals with the modification of a polyurethane (PUR) adhesive to the composition of laminates based on European beech (Fagus sylvatica L.), Common oak (Quercus robur L.), and Black locust (Robinia pseudoacacia L.) wood. The modified adhesive system consists of a PUR adhesive and acrylate water-dilutable penetration based on methacrylic acid esters in the cured state with the addition of thermoset particles. The modified adhesive system was tested under static and dynamic bending at different moisture contents of the test samples. Analyses of the mechanical behavior of materials bonded with modified PUR adhesive systems and the chemistry of the bonded part revealed a mix of advantages and disadvantages of this bonding system for certain hardwoods. For black locusts, in particular, the advantages seem to prevail, for which the MOR at 12 % moisture content averaged 160 MPa, and at increased moisture content, it averaged 147 MPa. And the average IBS for black locust wood was 17 J/cm2 for both moisture content levels. In general, the MOR, MOE, IBS, and delamination were improved by the modified adhesive system.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20502 - Paper and wood
Result continuities
Project
<a href="/en/project/EF16_019%2F0000803" target="_blank" >EF16_019/0000803: Advanced research supporting the forestry and wood-processing sector´s adaptation to global change and the 4th industrial revolution</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
CONSTRUCTION AND BUILDING MATERIALS
ISSN
0950-0618
e-ISSN
0950-0618
Volume of the periodical
460
Issue of the periodical within the volume
JAN 24 2025
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
15
Pages from-to
1-15
UT code for WoS article
001412575900001
EID of the result in the Scopus database
2-s2.0-85214305444