Adhesive performance of woods treated with alternative preservatives

Lee, Dong-heub; Lee, Myung Jae; Son, Dong–Won; Park, Byung‐Dae

doi:10.1007/s00226-005-0036-7

Cited by 24 publications

(21 citation statements)

References 5 publications

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“…Muchos factores pueden contribuir al desarrollo de una insuficiente resistencia en la línea de adhesivo. La presencia de preservantes y estabilizantes pueden interferir en la adhesión interfacial entre la madera y el adhesivo (Lee et al, 2006;Örs et al, 2004;Özçifçi, 2008). Se ha reportado que para lograr uniones estables con adhesivos del tipo PF en maderas tratadas con PEG fue necesario remover el PEG de las capas superficiales (Unger et al, 2001).…”

Section: Resultados Y Discusiónunclassified

“…Many factors may contribute to insufficient glue-line strength. The presence of preservatives and stabilizers can interfere with the interfacial adhesion between wood and adhesive (Lee et al, 2006;Örs et al, 2004;Özçifçi, 2008). It has been reported that to achieve stable bonds with PF-type adhesives in PEG-treated wood, it was necessary to remove the PEG from the surface layers (Unger et al, 2001).…”

Section: Resultados Y Discusiónmentioning

confidence: 99%

“…Although Aspidosperma quebracho-blanco is a dense wood (> 700 kg·m -3 ) of diffuse porosity, this property alone can not explain the results explained in this study. Indeed, Lee et al (2006) worked with pine (Pinus korainensis) and larch (Larix leptolepis) wood samples of similar densities and under the same operating conditions and found that the glue-line resistance values were dependent on the species. The weakest bonds were obtained with PF adhesives for pine and UF ones for larch.…”

Section: Resultados Y Discusiónmentioning

confidence: 99%

“…Adherence is a complex process influenced by both physical and chemical wood properties and the adhesive (Lee et al, 2006;Pizzi, 2000;Kamke and Lee, 2007). The resistance of the glue line in the material is crucial for determining the performance of the board structure.…”

Section: Studies Of Aspidosperma Quebracho-blanco Havementioning

confidence: 99%

“…La adhesión es un proceso complejo que está influenciado por las propiedades físicas y químicas tanto de la madera como del adhesivo (Lee et al, 2006;Pizzi, 2000;Kamke y Lee, 2007). La resistencia de la línea de adhesivo en el material es crucial en la determinación del desempeño de la estructura del tablero.…”

Section: Introductionunclassified

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EVALUACIÓN DE TRES ADHESIVOS EN LA FABRICACIÓN DE TABLEROS ENLISTONADOS DE Aspidosperma quebracho blanco ESTABILIZADO CON POLIETILENGLICOL

Sanabria¹,

Cayre²,

Frank³

2011

rchscfa

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RESUMENEn este trabajo se evaluó que tipo de adhesivo es factible de utilizar en la fabricación de tableros enlistonados de madera de Aspidosperma quebracho-blanco impregnada con polietilengliol (PEG). Se analizaron tres tipos de adhesivos: polivinil acetato (PVAc), urea-formaldehído (UF) y fenol-formaldehído (PF) para conformar los tableros. La calidad adhesiva se determinó mediante la resistencia de la línea de adhesivo en tableros fabricados con madera impregnada y sin impregnar. El uso de PEG como estabilizante de la madera de Aspidosperma quebracho-blanco no interfirió en el proceso de adhesión cuando se utilizaron adhesivos UF y PF. Con el adhesivo PVAc provocó una disminución (< 15 %) de la resistencia en la línea de adhesivo respecto de la madera sin impregnar. El adhesivo que mejor se comportó de acuerdo a la Norma Española UNE 56-777-92. Determinación de la resistencia en la línea de adhesivo, fue el UF. Los adhesivos PVAc y PF no lograron pasar las especificaciones mínimas de 10 N·mm -2 aún en los tableros fabricados con madera sin impregnar. ABSTRACTThis study analyzed what type of adhesive is most suitable for use in the manufacture of Aspidosperma quebracho-blanco wood blockboards impregnated with polyethylene glycol (PEG). Three types of adhesives that could potentially be used to form the boards were analyzed: polyvinyl acetate (PVAc), urea-formaldehyde (UF) and phenol-formaldehyde (PF). Bond quality was determined by the glue-line strength in boards made with impregnated and non-impregnated wood. The use of PEG as a stabilizer of Aspidosperma quebracho-blanco wood did not interfere in the adhesion process when UF and PF adhesives were tested. The PVAc adhesive decreased (<15%) the resistance of the glue line in comparison with the non-impregnated wood. The adhesive that performed the best according to the Spanish standard UNE 56-777-92, pertaining to the determination of glue-line strength, was the UF one. The PVAc and PF adhesives failed to reach the minimum specifications of 10 N·mm -2 even in those boards manufactured with non-impregnated wood.

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Section: Resultados Y Discusiónunclassified

Section: Resultados Y Discusiónmentioning

confidence: 99%

Section: Resultados Y Discusiónmentioning

confidence: 99%

Section: Studies Of Aspidosperma Quebracho-blanco Havementioning

confidence: 99%

Section: Introductionunclassified

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EVALUACIÓN DE TRES ADHESIVOS EN LA FABRICACIÓN DE TABLEROS ENLISTONADOS DE Aspidosperma quebracho blanco ESTABILIZADO CON POLIETILENGLICOL

Sanabria¹,

Cayre²,

Frank³

2011

rchscfa

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Determination of some physical and mechanical properties of laminated veneer lumber impregnated with boron compounds

Özçi̇fçi̇

Örs

Uysal

2007

J of Applied Polymer Sci

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The aim of this study was to determine the effects of Tanalith‐C 3310 (T‐C 3310), borax (Bo), boric acid (Ba), borax + boric acid (Bo + Ba), and diammonium phosphate (D) impregnations for some physical and mechanical properties of laminated veneer lumber (LVL). The veneers used for the LVL samples (based on BS EN 204) were cut from Scots pine (Pinus sylvestris L.), oriental beech (Fagus orientalis L.), and poplar (Populus nigra). They were impregnated with full‐cell method according to ASTM‐D 1413 standards and bonded with phenol formaldehyde (PF) and melamine formaldehyde (MF) adhesives. The following parameters have been tested: density, compression strength, bending strength, modulus of elasticity (MOE) in bending, and shear strength tests. Test results obtained from this study showed that impregnation with Boric acid and Tanalith‐C 3310 (based acidic characteristic) affected the strength of LVL negatively, when the wood material is impregnated with acidic impregnations and bonded with PF, which is an alkali, the glue‐line becomes more elastic, the bonding strength of adhesive weakens. Boric acid and Tanalith‐C 3310 impregnations could not be recommended for LVL elements exposed to bending or shear strength. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007

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Development of a chitosan‐based adhesive. Application to wood bonding

Patel

Michaud

Petit

et al. 2012

J of Applied Polymer Sci

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The potential of chitosan (CS) as wood adhesive was investigated in this study. The measurement of the bond strength of different CS-based formulations was carried out using double-lap shear tests. The best formulation tested was an adhesive composed of 6% of CS, 1% of glycerol, and 5 mmol/L of trisodium citrate dehydrate. Best bond strength from this formulation was found to be equal to 6.0 MPa in dried conditions and 1.6 MPa in wet conditions (specimens immersed for 3 h at 30 C in water). The failure in the double-lap joint tests mainly occurred in wood. Finally, the penetration of the rhodamine-labeled CS at 4% in the pinewood matrix was also studied using microtome and microscopy techniques to show interactions between CS-based adhesive and wood.

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Adhesive performance of woods treated with alternative preservatives

Cited by 24 publications

References 5 publications

EVALUACIÓN DE TRES ADHESIVOS EN LA FABRICACIÓN DE TABLEROS ENLISTONADOS DE Aspidosperma quebracho blanco ESTABILIZADO CON POLIETILENGLICOL

EVALUACIÓN DE TRES ADHESIVOS EN LA FABRICACIÓN DE TABLEROS ENLISTONADOS DE Aspidosperma quebracho blanco ESTABILIZADO CON POLIETILENGLICOL

Determination of some physical and mechanical properties of laminated veneer lumber impregnated with boron compounds

Development of a chitosan‐based adhesive. Application to wood bonding

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