nach oben

Wood Science and Technology

Erschienen in:

01.07.2012 | Original

Micromechanical properties of the interphase in pMDI and UF bond lines

verfasst von: Frank Stöckel, Johannes Konnerth, Johann Moser, Wolfgang Kantner, Wolfgang Gindl-Altmutter

Erschienen in: Wood Science and Technology | Ausgabe 4/2012

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config

KI-gestützte Suche

Aus

Abstract

Micromechanical properties of cured polymeric diphenylmethane diisocyanate (pMDI) and urea formaldehyde (UF) adhesive and wood cell walls (beech) in adhesive contact compared with cell walls without adhesive contact were measured in situ by means of nanoindentation. Using UV-microphotometry obtained absorbance spectra of micromechanical investigated cell wall regions gave a strong indicator for the presence of pMDI compounds in wood cell walls. Nanoindentation results reveal that both pure UF and UF-penetrated cell walls show a very brittle character. In contrast, pMDI adhesive is very tough and soft at the same time, and when diffused in cell walls, it does not mechanically embrittle the cell structure.

Vorheriger Artikel Strain fields around knots in Norway spruce specimens exposed to tensile forces

Nächster Artikel Resonance of scantlings indicates the stiffness even of small specimens of Eucalyptus from plantations

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

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!

Jetzt informieren

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!

Jetzt informieren

Bao S, Daunch WA, Sun Y, Rinaldi PL, Marcinko JJ, Phanopoulos C (2003) Solid state two-dimensional NMR studies of polymeric diphenylmethane diisocyanate (PMDI) reaction in wood. Forest Prod J 53:63–71

Bolton AJ, Dinwoodie JM, Davies DA (1988) The validity of the use of SEM/EDAX as a tool for the detection of UF resin penetration into wood cell walls in particleboard. Wood Sci Technol 22:345–356CrossRef

Buckley CJ, Phanopoulos C, Khaleque N, Engelen A, Holwill MEJ, Michette AG (2002) Examination of the penetration of polymeric methylene di-phenyl-di-isocyanate (pMDI) into wood structure using chemical-state x-ray microscopy. Holzforschung 56:215–222CrossRef

Cyr PL, Riedl B, Wang XM, Shaler S (2006) Urea-melamine-formaldehyde (UMF) resin penetration in medium-density fiberboard (MDF) wood fibers. J Adhes Sci Technol 20:787–801CrossRef

Fergus BJ, Procter AR, Scott JAN, Goring DAI (1969) The distribution of lignin in sprucewood as determined by ultraviolet microscopy. Wood Sci Technol 3:117–138CrossRef

Frazier CE (2003) Isocyanate wood binders. In: Pizzi A, Mittal KL (eds) Handbook of adhesive technology, 2nd edn. Marcel Dekker, Inc., New York, pp 681–694

Frazier CE, Ni J (1998) On the occurrence of network interpenetration in the wood-isocyanate adhesive interphase. Int J Adhes Adhes 18:81–87CrossRef

Frihart CR (2009) Adhesive groups and how they relate to the durability of bonded wood. J Adhes Sci Technol 23:601–617CrossRef

Gierlinger N, Hansmann C, Röder T, Sixta H, Gindl W, Wimmer R (2005) Comparison of UV and confocal Raman microscopy to measure the melamine-formaldehyde resin content within cell walls of impregnated spruce wood. Holzforschung 59:210–213CrossRef

Gindl W, Gupta HS (2002) Cell-wall hardness and young’s modulus of melamine-modified spruce wood by nano-indentation. Compos Part A Appl S 33:1141–1145CrossRef

Gindl W, Dessipri E, Wimmer R (2002) Using UV-microscopy to study diffusion of melamine-urea-formaldehyde resin in cell walls of spruce wood. Holzforschung 56:103–107CrossRef

Gindl W, Gupta HS, Schöberl T, Lichtenegger HC, Fratzl P (2004a) Mechanical properties of spruce wood cell walls by nanoindentation. Appl Phys A Mater Sci Process 79:2069–2073

Gindl W, Schöberl T, Jeronimidis G (2004b) Corrigendum to “The interphase in phenol-formaldehyde (PF) and polymeric methylene di-phenyl-di-isocyanate (pMDI) glue lines in wood” (vol 24, p 279, 2004). Int J Adhes Adhes 24:535

Gindl W, Schöberl T, Jeronimidis G (2004c) The interphase in phenol-formaldehyde and polymeric methylene di-phenyl-di-isocyanate glue lines in wood. Int J Adhes Adhes 24:279–286CrossRef

Gruver TM, Brown NR (2006) Penetration and performance of isocyanate wood binders on selected wood species. Bioresources 1:233–247

Humphrey PE (1993) A device to test adhesive bonds. USA Patent 5.176.028, Jan. 5, 1993

Kamke FA, Lee JN (2007) Adhesive penetration in wood—a review. Wood Fiber Sci 39:205–220

Konnerth J, Gindl W (2006) Mechanical characterisation of wood-adhesive interphase cell walls by nanoindentation. Holzforschung 60:429–433CrossRef

Konnerth J, Jäger A, Eberhardsteiner J, Müller U, Gindl W (2006) Elastic properties of adhesive polymers. II. Polymer films and bond lines by means of nanoindentation. J Appl Polym Sci 102:1234–1239CrossRef

Konnerth J, Harper D, Lee SH, Rials TG, Gindl W (2008) Adhesive penetration of wood cell walls investigated by scanning thermal microscopy (SThM). Holzforschung 62:91–98CrossRef

Konnerth J, Gierlinger N, Keckes J, Gindl W (2009) Actual versus apparent within cell wall variability of nanoindentation results from wood cell walls related to cellulose microfibril angle. J Mater Sci 44:4399–4406CrossRef

Marcinko JJ, Devathala S, Rinaldi PL, Bao S (1998) Investigating the molecular and bulk dynamics of PMDI/wood and UF/wood composites. Forest Prod J 48:81–84

Oliver WC, Pharr GM (1992) Improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J Mater Res 7:1564–1580CrossRef

Rapp AO, Bestgen H, Adam W, Peek RD (1999) Electron energy loss spectroscopy (EELS) for quantification of cell-wall penetration of a melamine resin. Holzforschung 53:111–117CrossRef

Roll H (1993) Mikrotechnologische Untersuchungen zum Verhalten des Klebstoffs Polymeres Diphenylmethan-4,4’-Diisocyanat auf Holzoberflächen im Hinblick auf seine Verteilung in Spanplatten. Dissertation, Ludwig-Maximilians-Universität, München

Scott JAN, Procter AR, Fergus BJ, Goring DAI (1969) The application of ultraviolet microscopy to the distribution of lignin in wood description and validity of the technique. Wood Sci Technol 3:73–92CrossRef

Stöckel F, Konnerth J, Kantner W, Moser J, Gindl W (2010) Tensile shear strength of UF- and MUF-bonded veneer related to data of adhesives and cell walls measured by nanoindentation. Holzforschung 64:337–342CrossRef

Volkersen O (1938) Die Nietkraftverteilung in zugbeanspruchten Nietverbindungen mit konstanten Laschenquerschnitten. Luftfahrtforschung 15:41–47

Xing C, Riedl B, Cloutier A, Shaler SM (2005) Characterization of urea-formaldehyde resin penetration into medium density fiberboard fibers. Wood Sci Technol 39:374–384CrossRef

Zheng J, Fox SC, Frazier CE (2004) Rheological, wood penetration, and fracture performance studies of PF/pMDI hybrid resins. Forest Prod J 54:74–81

Zhou XB, Frazier CE (2001) Double labeled isocyanate resins for the solid-state NMR detection of urethane linkages to wood. Int J Adhes Adhes 21:259–264CrossRef

Titel: Micromechanical properties of the interphase in pMDI and UF bond lines
verfasst von: Frank Stöckel
Johannes Konnerth
Johann Moser
Wolfgang Kantner
Wolfgang Gindl-Altmutter
Publikationsdatum: 01.07.2012
Verlag: Springer-Verlag
Erschienen in: Wood Science and Technology / Ausgabe 4/2012
Print ISSN: 0043-7719
Elektronische ISSN: 1432-5225
DOI: https://doi.org/10.1007/s00226-011-0432-0

Springer Professional

Abstract

Bitte loggen Sie sich ein, um Zugang zu Ihrer Lizenz zu erhalten.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Technik"

Springer Professional "Wirtschaft+Technik"

Weitere Artikel der Ausgabe 4/2012

Biosorption of Ce(III) onto modified Pinus brutia leaf powder using central composite design

Characterization of different wood samples using a new combined method of evolved gas analysis and pyrolysis–gas chromatography/mass spectrometry

Antifungal activity of Liriodenine from Michelia formosana heartwood against wood-rotting fungi

Effects of panel density and particle type on the ultrasonic transmission through wood-based panels

Effects of chemical modification with glutaraldehyde on the weathering performance of Scots pine sapwood

Resonance of scantlings indicates the stiffness even of small specimens of Eucalyptus from plantations