NDLI: Adhesion of wax impregnated solid beech wood with different glues and by plasma treatment

Content Provider	Springer Nature Link
Author	Scholz, G. thnick, E. Avramidis, G. Krause, A. Militz, H. Viöl, W. Wolkenhauer, A.
Copyright Year	2010
Abstract	Buchenholz wurde mit heiß schmelzendem Wachs imprägniert. Durch Kontaktwinkelmessungen wurde der hydrophobe Charakter des imprägnierten Holzes quantifiziert. Mit Zugscherversuchen wurden die Verklebungsgüte nach verschiedenen Lagerungsfolgen geprüft. Wachsimprägnierte Buche wurde einer Plasmabehandlung unterzogen und ihre Wirkung auf die Verklebungsgüte untersucht. Das unpolare Paraffin zeigte schlechtere Verklebungsresultate als das Montanesterwachs, so dass ein primärer Einfluss des verwendeten Wachstyps auf die Verklebung des imprägnierten Holzes deutlich wird. Eine Verklebung imprägnierter Buche mit Montanesterwachs ist im Innenbereich für konstruktive Holzbauteile möglich. Unter dauerfeuchten Bedingungen werden durch konventionelle, mit Härtern versehene Polyvinylacetat-Leime und Phenol-Resorcinol-Harz D3 Eigenschaften im nichtkonstruktiven Bereich erreicht. Die Plasmabehandlung verbessert diese Verklebungseigenschaften auf D4. Im wechselfeuchten Umgebungsbereich bewährten sich Isocyanatkleber und nach einer Plasmabehandlung von 120 s Polyvinylacetat-Leim.Beech wood was impregnated with two hot melting waxes. Contact angle measurement followed to determine hydrophobizing of such treated wood. Tensile shear tests were carried out to test the adhesion properties with three different glues under varying environmental conditions. Furthermore, wax impregnated beech was subjected to plasma treatment prior to glueing. The results demonstrate that wood treated with polar paraffin shows lower adhesion properties compared to montan wax. Therefore, montan wax was investigated more intensely. Beech impregnated with such wax can be used for constructive building elements in the interior sector. D3 Glues for non-constructive applications were realized by using PVAc and phenol-resorcinol resin under permanent influence of humidity. Plasma treatment improves this quality to obtain D4 glue. Back-drying of the water stored specimens proves the suitability of isocyanate glue and also that of PVAc after plasma treatment for 120 s.
Starting Page	315
Ending Page	321
Page Count	7
File Format	PDF
ISSN	00183768
Journal	Holz als Roh- und Werkstoff
Volume Number	68
Issue Number	3
e-ISSN	1436736X
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-07-22
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Operating Procedures, Materials Treatment Wood Science & Technology Ceramics, Glass, Composites, Natural Methods
Content Type	Text
Resource Type	Article
Subject	Materials Science Forestry

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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