Drvna industrija, Vol. 75 No. 2, 2024.
Original scientific paper
https://doi.org/10.5552/drvind.2024.0061
Dimensional Stability Properties of Medium-Density Fiberboards Produced Using Silicone-Based Chemicals
Meryem Ondaral
orcid.org/0000-0001-7767-4853
; Karadeniz Technical University, Arsin, Turkey
Mustafa Usta
; Karadeniz Technical University, OrtahisarTrabzon, Turkey
Sedat Ondaral
; Karadeniz Technical University, OrtahisarTrabzon, Turkey
Abstract
The purpose of this study was to investigate the effects of two different silicon-based water-repellent chemicals (Dow Corning 87 and Xiameter PMX-200 1000cs) added to melamine urea formaldehyde glue (1.07 mol, 5 % melamine additive) in different proportions (0.5 %, 1.0 %, 1.5 % and 3.0 %) on the dimensional properties (swelling-shrinkage and length extension and shrinkage) of the medium density fiberboard. In the context of the study, the dimensional stability properties of the boards were measured based on the TS EN 318:2005 standard. It was observed that, when the relative humidity of the air conditioning room increased from 65 % to 85 %, the swelling decreased and the extension increased, respectively, in the thickness and length directions of the boards produced with silicon-based chemicals (compared to the control board produced without using silicone-based chemicals). On the other hand, it was determined that the shrinkage in the thickness and length direction of the boards decreased when the relative humidity of the air-conditioning room was reduced from 65 % to 30 %. Moreover, the dimensional stability properties of medium density boards produced with silicon-based chemicals increased (resistance to moisture).
Keywords
MDF; hydrophobic; silicone-based chemical; water repellent; dimensional stability
Hrčak ID:
317882
URI
Publication date:
15.6.2024.
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