An Analysis of Varnish and Impregnation Processes for Combustion Temperature of Scotch Pine
- 1 Wood Products Industrial Engineering Department, Technology Faculty, Gazi University, Ankara, Turkey
- 2 Wood Products Industrial Engineering Department, Technology Faculty, Gazi University, Ankara, Turkey
- 3 Wood Products Industrial Engineering Department, Technology Faculty, Gazi University, Ankara, Turkey
Abstract
This study was performed to determine the effects of varnishing after impregnation with boron compounds on the combustion properties of Scotch pine. For this purpose, test samples prepared from Scotch pine ( Pinus sylvestris Lipsky ) wood were impregnated according to ASTM-D 1413-99 standard with boric acid (Ba) and borax (Bx) by vacuum technique. After impregnation, surfaces were coated by cellulosic (Cv), synthetic (Sn), polyurathane (Pu), waterborne (Wb), acrylic (Ac) and acid hardening (Ah) varnishes in accordance with ASTM D-3023 standard and then, combustion temperature was determined. According to material and process type, combustion temperature was the highest in Bx and Wb in flame source combustion (FSC), the lowest in Ba and Ac without flame source combustion (WFSC). According to combustion type, impregnation material and varnish type, combustion temperature was the highest in FSC, borax and cellulosic varnish combination and the lowest in WFSC, boric acid and acid hardening varnish combination. In conclusion, impregnation materials decrease while varnishes increase the combustion temperature of Scotch pine wood.
- Bednarek, Z. and Kaliszuk-Wietecka, A. (2007) Analysis of Fire-Protection Impregnation Influence on Wood Strength. Journal of Civil Engineering Management, 13, 79-85.
- Goldstein, I.S. (1973) Deterioration and Protection of Wood from Thermal Attact: Wood Deteration and Its Prevention by Preservation Treatments. Syracuse University Press, Syracuse, 307-339.
- Levan, S.L. and Widany, J.E. (1990) Effects of Fire Retardant Treatments on Wood Strength: A Review. Wood and Fiber Science, 22, 113-131.
- Keskin, H., Atar, M. and Izciler, M. (2009) Impacts of Impregnation Chemicals on Combustion Properties of the Laminated Wood Materials Produced Combination of Beech and Poplar Veneers. Construction and Building Materials, 23, 634-643. http://dx.doi.org/10.1016/j.conbuildmat.2008.02.006
- Yapici, F., Uysal, B., Kurt, S., Esen, R. and Ozcan, C. (2011) Impacts of Impreh-Gnation Chemicals on Finishing Process and Comcustion Properties of Oriental Beech (Fagus Orientalis L.) Wood. Bioresources, 6, 3933-3943.
- Evans, P.D., Michell, A.J. and Schmalzl, K. (1992) Studies of the Degradetion and Protection of Wood Surfaces. Wood Science and Technology, 26, 151-163. http://dx.doi.org/10.1007/BF00194471
- Atar, M., Keskin, H. and Yavuzcan, H.G. (2004) Varnish Layer Hardness of Oriental Beech (Fagus orientalis Lipsky) Wood as Affected by Impregnation and Color Bleaching. Journal of Coatings Technology (JCT), 1, 498-504.
- Feist, W.C. (1988) Weathering of Wood and Its Control by Water Repellent Preservatives. In: Hamel, M.P., Ed., Wood Protection Techniques and the Use of Treated Wood in Construction, Forest Products Society, Madison, 82-88.
- Harrow, K.M. (1997) Leachibility of Some Water-Soluble Wood Preservatives, NZ. Wood Science Technology, B32, 33-40.
- Sell, J. and Feist, W.C. (1985) Weathering Behaviour of Cromium-Copper-Boron Treated Wood. Holz als Roh und Werkstoff, 43, 518. http://dx.doi.org/10.1007/BF02608035
- TS 2476 (1976) Odunda Fiziksel ve Mekaniksel Deneyler Ì çin Numune Alma Metotlar? ve Genel Özellikler. T.S.E, Ankara.
- DYO (1996) Dewilux, Teknik Bülten. Dewilux Fabrikalar? A.S, Ìzmir.
- ASTM D-1413-99 (2005) Standart Method of Testing Wood Preservatives by Laboratory Soilblock Cultures. Annual Book of ASTM Standards, 452-460.
- ASTM D-3023 (1998) Standard Practice for Determination of Resistance of Factory Applied Coatings on Wood Products of Stain and Reagents. American Society for Testing and Materials.