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- Title
DETERMIMATION OF DIMENSION STABILITY OF PLYWOOD WHICH EXPOSED WATER STEAM.
- Authors
UYSAL, Burhanettin; ÖZCAN, Cemal; YILDIRIM, M. Nuri; ESEN, Raşit; KIBAROğLU, Recep
- Abstract
In this study, the qualities of dimensional change and adhesion resistance of moulded concave plywood material after being exposed to water vapour have been investigated. To this end, for the production of moulded concave plywood material, Oriental Beech (Fagus orientalis) was used as the wood material; and Urea formaldehyde was used as the adhesive. The moulded plywoods were exposed to water vapour for 2, 6, 12, 24, 48 and 96 according to TS 3639 standards and their dimensional stabilisations according to TS 318 standards and adhesion resistances according to BS EN 205 standards were determined. As a result; average exact dry density has been established as 0,708g/cm³ and air dry density has been established as 0,814g/cm³. The dimensional increases are found to be % 1,03 in wideness, % 8,08 in thickness, % 5,08 in arc openness, % 3,21 in arc and environment longitude. In the adherence resistance, the highest value is stated in the control group paralel to the fibres with 4.07 N/mm²; the lowest one is stated as 1.19 N/mm² in the examples which are vertical to the fibres and were exposed to hot water vapour for 96 hours. According to this: moulded concave plywood can be used in the areas prone to be exposed to water vapour for 48 hours or less.
- Subjects
PLYWOOD; DIMENSIONS; STABILITY (Mechanics); ADHESION; WATER; THERMAL properties of wood; FORMALDEHYDE; DENSITY
- Publication
Teknoloji, 2010, Vol 13, Issue 2, p125
- ISSN
1302-0056
- Publication type
Article