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Projects / Programmes source: ARRS

Vpliv nekaterih parametrov lepljenja lesa na oblikovanje lepilne vezi (Slovene)

Research activity

Code Science Field Subfield
4.01.02  Biotechnical sciences  Forestry, wood and paper technology  Wood technology 

Code Science Field
T460  Technological sciences  Wood, pulp and paper technology 
Keywords
wood gluing, adhesive penetration, fluorescence microscopy, shear strength, urea-formaldehyde adhesive, urea-melamine formaldehyde adhesive, high frequency gluing, wood moisture content
Evaluation (rules)
source: COBISS
Researchers (6)
no. Code Name and surname Research area Role Period No. of publications
1.  05732  PhD Željko Gorišek  Forestry, wood and paper technology  Researcher  1999 - 2001  450 
2.  10340  PhD Dominika Gornik Bučar  Forestry, wood and paper technology  Researcher  1999 - 2001  228 
3.  11925  PhD Marijan Medič  Forestry, wood and paper technology  Researcher  1999 - 2001  89 
4.  17848  Janez Renko    Researcher  1999 - 2001 
5.  06324  PhD Jože Resnik  Forestry, wood and paper technology  Principal Researcher  1999 - 2001  310 
6.  16382  PhD Milan Šernek  Forestry, wood and paper technology  Researcher  1999 - 2001  551 
Abstract
The aim of the project is to study the impact of some parameters relating to gluing (moisture content, gluing process, open assembly time and assembly time in gluing) on the formation of urea formaldehyde (UF) and urea melamine formaldehyde (UMF) adhesive bond , and the mechanical properties of the latter. Research will focus on the dependence of penetration of UF and UMF with regard to different wood moisture contents. Wood moisture content gradients will be selected on the basis of experience-based moisture content interval as used in the gluing of wood in practice. Also studied will be the influence on the manner of gluing (standard and HF gluing) and on adhesive penetration.. The assessment of the depth of penetration of adhesive will be carried out by a special technique of florescent microscopy and by means of a computer programme designed for qualitative assessment of penetration. By means of multiple range analysis, specific differences regarding the penetration of adhesive as a function of moisture content and the wood gluing process will be determined. Following the analysis and the determination of correlation between the gluing parameters used and adhesive penetration depth in the adhesive bond, by means of correlation analysis, correlation will be sought between adhesive penetration depth and shearing strength of the adhesive bond. In the final stage, research will focus on the development and application of fracture mechanics - a special method of adhesive bond testing (still in the development phase also elsewhere in the world) , which should provide more accurate and reliable testing of the strength of adhesive bond.
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