Skip to main content
Disciplines
Automotive Business IT + Informatics Construction + Real Estate Electrical Engineering + Electronics Energy + Sustainability Insurance + Risk Finance + Banking Management + Leadership Marketing + Sales Mechanical Engineering + Materials
Events
DE
EN
Books
Journals
Topic Page
Marketing
Start single access now
Access for companies
EXTENDED SEARCH
Log in
Top
European Journal of Wood and Wood Products
Published in: European Journal of Wood and Wood Products 5/2012

01-09-2012 | Originals Originalarbeiten

Influence of the degree of condensation of urea-formaldehyde adhesives on the tangential penetration into beech and fir and on the shear strength of the adhesive joints

Authors: Ivana Gavrilović-Grmuša, Manfred Dunky, Jovan Miljković, Milanka Djiporović-Momčilović

Published in: European Journal of Wood and Wood Products | Issue 5/2012

Log in

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

The objective of this work was to evaluate the influence of the degree of condensation of urea formaldehyde (UF) resins on the tangential penetration into fir and beech and on the tensile shear bond strength of wood joints.
Tangential penetration was determined by epi-fluorescence microscopy on microtome slides, exposing the bond line on a cross-sectional surface. The higher the degree of condensation (viscosity) of the resins, the lower is the possibility for penetration; beech showed higher penetration than fir.
Bond strengths decreased with increased degree of condensation (viscosity) of the adhesives. Shear strength based on radial penetration was higher than for tangential penetration. The higher the penetration and the thicker, hence, the interphase, the higher was the achieved shear strength.
previous article Influence of resin content and pulping temperature on the formaldehyde release from medium density fibreboards (MDF)
next article Moisture-dependent, viscoelastic creep of European beech wood in longitudinal direction

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Wirtschaft"

Online-Abonnement

Mit Springer Professional "Wirtschaft" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 340 Zeitschriften

aus folgenden Fachgebieten:

  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Versicherung + Risiko




Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

inform now
Literature
Billiani J, Lederer K, Dunky M (1990) Untersuchungen der Molmassenverteilung von Harnstoff-Formaldehyd-Leimharzen mittels GPC gekoppelt mit Lichtstreuung. Angew Makromol Chem 180:199–208 CrossRef
Dunky M, Lederer K (1982) Untersuchungen der Molgewichtsverteilung von Harnstoff-Formaldehyd-Leimharzen. Angew Makromol Chem 102:199–213 CrossRef
Dunky M (2003) Wood adhesives. In: Pizzi A, Mittal KL (eds) Handbook of adhesive technology, 2nd edn. Dekker, New York, pp 887–956
Dunky M, Pizzi A (2003) Wood adhesives. In: Dillard DA, Pocius AV (eds) Adhesion science and engineering. Surfaces, Chemistry and Applications, vol 2. Amsterdam, Elsevier, pp 1039–1103
Gavrilović-Grmuša I, Dunky M, Miljković J, Diporović-Momčilović M (2010a) Radial penetration of urea-formaldehyde adhesive resins into beech (Fagus Moesiaca). J Adhes Sci Technol 24:1753–1768 CrossRef
Gavrilović-Grmuša I, Miljković J, Ðiporović-Momčilović M (2010b) Influence of the degree of condensation on the radial penetration of urea formaldehyde adhesives into Silver Fir (Abies alba, Mill.) wood tissue. J Adhes Sci Technol 24:1437–1453 CrossRef
Johnson SE, Kamke FA (1992) Quantitative analysis of gross adhesive penetration in wood using fluorescence microscopy. J Adhes 40:47–61 CrossRef
Kim MG, No BY, Lee SM, Nieh WL (2003) Examination of selected synthesis and room-temperature storage parameters for wood adhesive-type urea–formaldehyde resins by 13C-NMR spectroscopy V. J Appl Polym Sci 89(7):1896–1917 CrossRef
Marra A (1992) Technology of wood bonding principles in practice. Van Nostrand Reinhold, New York
Niemz P (1993) Physik des Holzes und der Holzwerkstoffe. DRW-Verlag, Leimfelden-Echterdingen
Pizzi A (1999) On the correlation equations of liquid and solid 13C-NMR, thermomechanical analysis, T g , and network strength in polycondensation resins. J Appl Polym Sci 71:1703–1709 CrossRef
Rydholm AS (1967) Pulping processes. Wiley, New York
Scheikl M, Dunky M (1996a) Harnstoff-Formaldehyd-Harze als flüssige Phase bei der Benetzung von Holz. Holzforsch Holzverwert 48:55–57
Scheikl M, Dunky M (1996b) Softwareunterstützte statische und dynamische Kontaktwinkelmeßmethoden bei der Benetzung von Holz. Holz Roh- Werkst 54:113–117 CrossRef
Scheikl M, Dunky M (1998) Measurement of dynamic and static contact angles on wood for the determination of its surface tension and the penetration of liquids into the wood surface. Holzforschung 52:89–94 CrossRef
Sernek M, Resnik J, Kamke FA (1999) Penetration of liquid urea-formaldehyde adhesive into beech wood. Wood Fiber Sci 31(1):41–48
Siau JF (1984) Transport processes in wood. Springer, Heidelberg, New York CrossRef
Suchsland O (1958) Über das Eindringen des Leimes bei der Holzverleimung und die Bedeutung der Eindringtiefe für die Fugenfestigkeit. Holz Roh- Werkst 16:101–108 CrossRef
Zheng J, Fox SC, Frazier CE (2004) Rheological wood penetration, and fracture performance studies of PF/pMDI hybrid resins. For Prod J 54(10):74–81
Metadata
Title
Influence of the degree of condensation of urea-formaldehyde adhesives on the tangential penetration into beech and fir and on the shear strength of the adhesive joints
Authors
Ivana Gavrilović-Grmuša
Manfred Dunky
Jovan Miljković
Milanka Djiporović-Momčilović
Publication date
01-09-2012
Publisher
Springer-Verlag
Published in
European Journal of Wood and Wood Products / Issue 5/2012
Print ISSN: 0018-3768
Electronic ISSN: 1436-736X
DOI
https://doi.org/10.1007/s00107-012-0599-6

Other articles of this Issue 5/2012

European Journal of Wood and Wood Products 5/2012 Go to the issue

Originals Originalarbeiten

Tannin-boron preservatives for wood buildings: mechanical and fire properties

Originals Originalarbeiten

Influence of ageing on mechanical properties of wood to wood bonding with wheat flour glue

Originals Originalarbeiten

Inter-laboratory comparison of formaldehyde emission from particleboard using ASTM D 6007-02 method

Originals Originalarbeiten

The effect of Na+ montmorillonite (NaMMT) nanoclay on thermal properties of medium density fiberboard (MDF)

Originals Originalarbeiten

Influence of resin content and pulping temperature on the formaldehyde release from medium density fibreboards (MDF)

Originals Originalarbeiten

Melaminharzbasierende duromere WPC – Steuerung der Verarbeitung und der Eigenschaften