Farmers’ perceptions of climate change and its implication on livestock production in mixed-farming system areas of Bale highlands, Southeast Ethiopia; Challenges and extents of Soil and Water Conservation measures in Guba-Lafto Woreda of North Wollo, Ethiopia; Evaluation of milk production performance of lactating Fogera cows fed with urea and effective micro-organisms treated rice straw as basal diet.

E3 Journal of Agricultural Research and Development

E3 Journal of Agricultural Research and Development Vol. 3 (3) pp. 043-048, May 2013; © E3 Journals; ISSN 2276-9897


Determination to the effects of wax/linseed oil and varnish on the dimensional stability of laminated veneer wood (LVL)

Şemsettin DORUK 1 * , Mustafa ALTUNOK 1 * , A. Rıza ARSLAN 1 * , Levent GÜRLEYEN 1 *
1 Karabuk University, Department of Forestry, Eskipazar Vocational School, Eskipazar/ Karabuk, Turkey
2 Gazi University, Faculty of Technology, Department of Wood Products Industrial Engineering, Ankara Turkey
3 Afyon Kocatepe University, Faculty of Fine Arts, Department of Interior Architecture, Afyonkarahisar, Turkey
4 Bostans Furniture Factory, Bitik Mah., 06980, Kazan, Ankara, Turkey
*Corresponding Author E-mail: sdoruk@gazi.edu.tr
Accepted 2 April 2013

Abstract

In this study the effects of some protective on the dimensional stability of laminated veneer wood (LVL) was determined. For this purpose, test samples (laminated panels) were glued by various glues, impregnated by the mixture of wax/linseed oil on the basis of ASTM 1413-07 (Standard Test Method of Testing Wood Preservatives by Laboratory Soilblock Cultures) varnished by synthetic based house varnish and waited against the corruptive effects of external environment. Laminated panels were prepared from Pine wood (Pinus sylvestris L.) veneer by gluing with Vinyl tree ketonol acetate (VTKA) and melamine formaldehyde (MF) in accordance with TS EN 386 (Glued laminated timber- Performance requirements and minimum production requirements). The samples were impregnated by the mixture of wax/linseed oil and varnished by synthetic based translucent varnish. Control samples (without proceeding), impregnated and varnished samples were kept in the external environment (ASTM G7-05: Standard Practice for Atmospheric Environmental Exposure Testing of Nonmetallic Materials) for 1 year and in UV environment (ASTM G154-6: Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials, ASTM G151-06: Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources) for 240 hours. The Samples were tested to determine the air-dried density (TS 2472: Wood-Determination of Density for Physical and Mechanical Tests), retention amount (ASTM D 1413-07), dimensional alteration (TS 4084: Determination of swelling in the wood, the radial and tangential direction). According to the results of these tests, in terms of outdoor conditions, it is concluded that the varnished proceeding provides a better protection compared to impregnated proceeding. The best result for dimensional alteration was obtained on the Pine (Pinus sylvestris L.) samples with MF glue. The percentage represents the ratio of the natural environment, investing roughly to the external environment has been identified as UV.

Keywords: veneer lumber (LVL), Pine wood (Pinus sylvestris L.), UV ageing, external environment, wax/linseed oil, synthetic based translucent varnish, dimensional alteration.

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