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Gewählte Master / Diploma Thesis:

Clemens Schmidberger (2015): Distribution of Adhesive in Particle Boards.
Master / Diploma Thesis - Institut für Holztechnologie und Nachwachsende Rohstoffe, BOKU-Universität für Bodenkultur, pp 62. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
The internal bond strength test of particle board samples with UF-adhesive reinforced with nanocellulose or additive II showed significantly better results than the unreinforced reference samples. The hypothesis was that due to the additives the penetration of adhesive in the wood matter is reduced and thus more adhesive is available in the glue joint. This was proved with the novel method of adhesive detection, which determines the location of adhesive in particle boards. Therefore the adhesive was differentiated in three portions: adhesive in the glue joint, penetrating adhesive and excess adhesive. Specimens of a size of 3 x 4 x 3 mm were cut out of particle board bending samples. These samples were used to create thin slices, which were stained with the fluorescent-stain Brilliant Sulphaflavine and Genitanaviolet afterwards. The microscope images were edited with Photoshop in a way that the different portions could be calculated with binary operations. The hypothesis could not be proved, but the results show that the addition of additives results in more adhesive in the glue joint and significantly less excess. It could also be proved that the adhesive particle size distribution is dependent on the adhesive system. The reference samples show a tendency to a higher amount of smaller adhesive particles.

Beurteilende(r): Gindl-Altmutter Wolfgang
1.Mitwirkender: Mahrdt Eike Alexander

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