Your search resulted in 417 documents. Displaying 25 entries per page.
Bio-based thermoset resins for bonding and eco-friendly preservation in the wood industry
2013 - IRG/WP 13-40650
…Mechanical properties of resins were analyzed by shear strength test on plywood. Depending on formulations, results confirmed the high potential of yellow dextrins and tannins reticulated by epichlorhydrin, to glue wood. Moreover, the biodegradation tests of cross-linked samples showed that the network…
C Motillon, A Allal, A Visse, F Charrier, B Charrier, A Baldé
Influence addition of boron compounds to adhesives on the bonding quality and fungicidal properties of glued wood
2010 - IRG/WP 10-40497
…These issues have been overcome with the development of bonding and wood preservation. The preservation of glued wood is elucidated in this paper. Through the addition of boric acid to adhesives, we tried to improve the fungicidal properties of glued wood. The results of mechanical testing (shear strength and…
M Humar, B Lesar, A Ugovsek, M Kariz, P Kralj, M Šernek
Wettability and bonding strength of wood thermally-treated with different combinations of soy oil and chemical additives
2009 - IRG/WP 09-40454
Thermal treatment is a method which has gained wider acceptability as an alternative to the chemical treatment in wood preservation. In order to maximize the benefits of this technique several options have been adopted including the use of soy oil in transferr…
L Awoyemi, P A Cooper, T Ung
Decay Resistance and Bonding Properties of Structural Flakeboard
2002 - IRG/WP 02-40233
…system did not appreciably promote decay or reduce IB strength. As expected, panels produced with a higher ratio of recycled CCA-treated wood furnish, were generally subject to less weight loss during decay tests for brown rot (Gloeophyllum trabeum, ATCC 11539) and white rot (Trametes versicolor, ATCC 42462)…
T F Shupe, Chung-Yun Hse
Antifungal properties and bonding of menthoxymethylimidazolium ionic liquids with Scots pine wood
2013 - IRG/WP 13-30627
Antifungal activities of five chiral ionic liquids - menthoxymethylimidazolium derivates against brown-rot decay fungus (Coniophora puteana), white-rot decay fungus (Trametes versicolor) and blue-stain fungus (Sclerophoma pithyophila) were determined using sc…
J Zabielska-Matejuk, J Feder-Kubis, A Stangierska
Enhancing strength, fire and biological resistance of wood through structural and chemical modification
2025 - IRG/WP 25-30831
…the properties of wood to improve its durability, strength, and resistance to environmental factors has been a critical area of research. Recent studies demonstrate that delignification, chemical impregnation, and densification significantly improve the performance of wood composites by enhancing…
R Abouzeid, M S Koo, Q Wu
Transformation of bamboo: From multiscale fibers to robust and degradable cellulose-based materials for plastic substitution
2025 - IRG/WP 25-41032
…shape-shifting of bamboo while retaining its high strength and degradability remains challenging. This study used multiscale interface engineering to transform bamboo into a robust, biodegradable, and moldable bamboo cellulose-based material. We first deconstructed natural bamboo into cellulose fibres,…
J Hu, Y Zhang, Y He, Z Su, W Lao, S Zhang, Y Yu, W Yu, Y Huang
Preliminary assessment of imidazole as an adhesion system for particleboards
2025 - IRG/WP 25-41043
…after 24 h of water immersion was 6.3% and the internal bonding strength was 0.57 MPa. The modulus of rupture and modulus of elasticity were 3.3 MPa and 1.1 GPa, respectively. Cyclic accelerated weathering showed exceptional stability with a thickness change after boiling and drying of only 2.1% compared to the…
A Scharf, H Dernagård, J Oja, G Ormondroyd, S Medved, D Jones
Longitudinal tensile shear properties of polyurethane-bonded preservative-impregnated Eucalyptus grandis laminates subjected to varied simulated climatic conditions
2023 - IRG/WP 23-40967
Bonding process adaptations have yielded improvements in the adhesive bonding of Eucalyptus grandis wood for manufacturing hardwood laminates. However, there are still concerns over the adhesive-bond performance, particularly preservative-impregnated E.…
A A Alade, C B Wessels
Elucidation of reactive sites of wood modified with acetic anhydride: Insights from density functional theory calculations
2020 - IRG/WP 20-40892
…(NCI) plots were used to analyse the intermolecular bonding characteristics. Cellulose was modelled with a cellobiose unit (dimer of glucose) and dibenzodioxocin was used to represent lignin model. This typical lignin model has three predominant linkages such as β-O-4, α-O-4 and 5-5’. All DFT calculations…
V Ponnuchamy, A Sandak, J Sandak, R Herrera Diaz
Physico-Mechanical and Biological Properties of Cement Bonded Particleboards from Nordmann Fir
2017 - IRG/WP 17-40798
…(modulus of elasticity, modulus of rupture, internal bonding strength and screw withdrawal strength) of the boards and decay resistance (brown rot fungi) properties were determined according to EN323, ASTM D1037, EN 317, EN 310, EN 319, EN 320 and EN 113, respectively. The results show that the better…
H Yel, U Aras, H Kalaycioglu
Role of cell wall specific moisture content on the brown-rot fungal attack on wood
2016 - IRG/WP 16-40736
…groups that attract moisture through hydrogen bonding. Moisture content varies with changing moisture content in its environment. The moisture content in wood is responsible for many of the performance properties we observe. The strength properties of wood are dependent on the moisture content as does…
R M Rowell
The effect of UV irradiation on some technological properties of different polyurethane varnishes coated plywood panels from veneers dried at different temperatures
2014 - IRG/WP 14-40661
…resin with 54% solid content. UV irradiation process, bonding strength, color measurement and surface roughness tests were conducted on plywood panels according to ASTM G53, EN 314, ISO 7724-2 and DIN 4768 standards, respectively. Polyurethane varnish (ingredients: 37% polyurethane, 63% water) coated plywood…
Ö Özgenç, C Demirkir, Ü C Yildiz, G Çolakoğlu
Curing kinetics of nano cupric oxide (CuO) modified PF resin as wood adhesive: Effect of surfactant
2013 - IRG/WP 13-40620
…kinetics of phenol formaldehyde (PF) resin, as well as the bonding strength of plywood prepared using the modified resin were investigated in this study using dynamic and isothermal differential scanning calorimetry (DSC). The result showed that the incorporation of nano CuO along with alkane surfactant made in the…
Wei Gao, Guanben Du
Physical and Mechanical Properties of Bamboo Oriented Strand Board Treated with Copper-based Preservatives
2009 - IRG/WP 09-40482
…of rupture, modulus of elasticity, and internal bond strength. The results indicated that the experimental panels had excellent mechanical properties and extremely low thickness swelling. According to the China Standard LY/T 1580-2000 ‘Oriented strand board’, all panels treated with CuAz and CuN met the…
Juwan Jin, Daochun Qin
The susceptibility of hardwood plywood to white rot
2008 - IRG/WP 08-40397
…determination of mass loss caused by the fungus and bonding quality determination by shearing test before and after the fungus growth. Almost none of all tested plywood was resistant to decay caused by the fungus according to test based on EN 113. The results of fungi growth were mass losses of about 14 to 38%…
A Fojutowski, A Kropacz
Mechanical resistance of Pinus radiata CCA treated and face jointed with PVA adhesive
1999 - IRG/WP 99-40140
…of the CCA treatment up to 4 kg oxide/m3 prior to the bonding produced a decrease in the mechanical strength of the joint in both types of roughness. Treated and machined samples had similar behaviour as rough untreated samples. The selected adhesive is not good in applications on weather exposed service of…
M C Rose, L Reyes, P León
DURALARCH – Suitability of selected coloured coniferous heartwoods of different origin for their use in outdoor applications
2025 - IRG/WP 25-11064
…a few softwoods available that also have high density and strength characteristics. One of the most important timbers with these material properties is Siberian larch (Larix sibirica, Larix gmelinii), which is available in sufficient quantities due to its large distribution area. Imports of Siberian larch from…
C Brischke, J Appelt, G Koch, S Majer, M Nopens, R Stirling, D Wong
Improvement and practical application of dry-type pressure treatment method
2025 - IRG/WP 25-20734
…In response to this, the authors conducted adhesion strength tests, dimensional change measurements between before and after dry-treatment, and durability tests assuming the foundation environment of conventional construction methods to evaluate dry-treating engineered wood. As a result, it was found that the…
D Tezuka, C Igarashi
Mitigating the risk of decay in CLT buildings affected by trapped construction moisture using a diffusible borate preservative
2025 - IRG/WP 25-20735
…oriented perpendicular to the one below it. This enhances strength, stability and dimensional rigidity. CLT is seen as an excellent ‘low carbon’ alternative to using steel and concrete and is growing in popularity as a sustainable construction material. It has opened up a sector that was previously limited to…
J R Williams
Functionalization of wood with nano-sized titanium dioxide – Efficacy against mould growth and effect on cell wall integrity
2025 - IRG/WP 25-20740
…Zero-span tensile testing showed a slight reduction in strength for nano TiO2-treated veneers exposed to UV light, while no such effect was observed in unexposed specimens. This indicates that UV-induced radicals contribute to cell wall degradation rather than cross-linking effects caused by nano TiO2.
U Hundhausen, S Bollmus, L Ross
CIOL Wood - Scientific Innovations in Wood Modification for Enhanced Performance and Usage
2025 - IRG/WP 25-20743
…of various tests, including fire resistance, mechanical strength, and marine testing, are discussed, along with the potential of CIOL® treated wood for use in sustainable applications such as construction, outdoor furniture, bicycle frames, and marine structures. The paper also outlines the ongoing development…
E Larnøy, A Treu, M Diraison, M Smith, A Audouin, P T Lewandowski, J Biørnstad
A novel anti-fungal wood crack repairing agent based on CQDs/PVA
2025 - IRG/WP 25-20744
…the overall robustness of the repairing, with a dry shear strength reaching 2.8 MPa. Furthermore, the cured wood demonstrates outstanding decay resistance due to the fungicidal character of N-CQDs, which exhibit a minimum inhibitory concentration (MIC) ranging from 120 to 180 ppm. This technique not only offers…
X Zhao, Z Zhang, Y Peng, W Wang, J Cao
Durability Analysis of Bio-based Phenol-Formaldehyde Resin-Treated Wood
2025 - IRG/WP 25-20753
…After six months of outdoor exposure, the bending strength of untreated wood varied significantly across different degradation periods, whereas resin-treated specimens maintained their strength, so it verifies the feasibility and stability of resin-treated wood for outdoor use.
T-H Lin, P-Y Kuo
The Impact of Drying Techniques on the Quality of Thermally Modified Wood
2025 - IRG/WP 25-30813
…of rupture (MOR), modulus of elasticity (MOE), compression strength parallel to the grain and impact resistance, were measured. Physical properties were also assessed, such as volumetric swelling and equilibrium moisture content (EMC). The impact resistance of ThermoWood® produced from wood dried in a mild…
M Ghorbanian Far, N Sharifi, A Nikoutadbir, A Tarmian, M Humar