BAZI KİMYASALLARLA EMPRENYE EDİLMİŞ VE PF VE PVAc TUTKALI İLE YAPIŞTIRILAN LAMİNE AĞAÇ MALZEMELERİN YANMA ÖZELLİKLERİ

Bu çalışmada, polyvinil asetat, PVAc , fenol formaldehit PF tutkalı kullanılarak uludağ göknarından Abies bornmülleriana Mattf. 3 tabakalı olarak üretilen ve NH3 2P, Al2 SO4 3, K2CO, CaCl, ZnCl2, ile emprenye edilmiş malzemelerin yanma özellikleri araştırılmıştır. Emprenye işlemi basınç- vakum yöntemi kullanılarak uygulanmıştır. Yanma testleri ASTM-E 69 standartlarına göre yapılmıştır. Sonuç olarak yanmaya karşı en başarılı, çinko klorür ile emprenye edilmiş PF tutkallı LVL bulunmuştur. Yanma olayını geciktirdiği için, PF tutkalı kullanılarak Uludağ göknarından üretilen ve basınç – vakum metodu ile emprenye edilen LVL önerilebilir

Anahtar Kelimeler:

Lamine ağaç malzeme, PVAc, fenol formaldehit, yanma

COMBUSTION PROPERTIES OF LAMINATED VENEER LUMBERS BONDED WITH PVAC, PF ADHESIVES AND IMPREGNATED WITH SOME CHEMICALS

In this study, it has been investigated that the effects of impregnation materials that are NH3 2P, Al2 SO4 3, K2CO3, Cacl, Zncl2, on combustion properties of 3 ply laminated veneer lumbers LVL produced from fir Abies bornmülleriana Mattf. by using of phenol-formaldehyde PF , polyvinyl acetate PVAc . The pressure - vacuum method was used for impregnation process. Combustion test was performed according to the procedure of ASTM-E 69 standards. As a result; zinc chloride was found to be the most successful fire retardant chemical in LVL at PF adhesive. Since it diminishes combustion, the impregnation of LVL produced from fir by using PF adhesive can be advised to be impregnated by using pressure vacuum method.

Keywords:

Laminated Veneer Lumbers (LVL), PVAC, Phenol - Formaldehyde, Combustion,

PDF

___

ASTM-E 69 (1975). Standard test methods for combustible properties of treated wood by the fire apparatus.
BADWIN, R.F., Plywood and veneer-based products: manufacturing practices. San Francisco, Miller Freeman Inc..
COLAK, S., AYDIN, I., DEMIRKIR, C. & . COLAKOĞLU, G., (2004). Some technological properties of laminated veneer lumber manufactured from Pine (Pinus sylvestris L.) Veneers with Melamine Added- UF Resins. Turk J Agric For 28 (1), pp.109-113.
COLAKOĞLU, G., (1998). Wood adhesives. Karadeniz Technical University, Forest Industry Engineering, pp. 32-58.
GEORGE, CW, JOHNSON, CW. (1986). Determining .re retardant quality in the .eld. US Forest Service, Report GTR-INT-201.
GOLDSTEIN, I.S., (1973). Degradation and protection of wood from thermal attack, in: Wood Deterioration and Its Prevention By Preservative Treatments, D.D. NICHOLAS,(ed.) New York , Syracuse University Press, (1), 307-339.
KOLMANN, F., (1960). Occurrance of exothermic reaction in Wood. Holz Als Roh- und Werkstoff, (18), 193-200.
LEVAN, L.S., (1984). Chemistry of fire retardancy. The Chemistry of Solid Wood, pp.531-574.
LOBERT, J.M., SCHARFFE, D.H., (1991). Experimental evaluation biomass burning emissions : nitrogen and carbon containing compounds. In: Global Biomass Burning: Atmospheric, Climatic and Biospheric Implications, Chapter 36, Levine J.S (ed), Cambridge, MA, MIT press, pp.289-307.
ÖRS, Y. (1987). Kama disli birlesmeli masif agaç malzemede mekanik özellikler : Yardımcı Ders Kitabı, Trabzon, K.T.Ü. Orman Fakültesi, pp.29-34.
ÖRS, Y., SÖNMEZ, A. & UYSAL, B., (1999). Ağaç malzemenin yanmaya dayanıklılığını etkileyen emprenye maddeleri. Turkish J. Agriculture and Forestry, (23) pp.389-394.
SCOTT, S., (1992). Clocks and chaos in chemistry in the new scientist guide to chaos, N. HALL (ed.), London, Penguin Books ltd, pp.108-122.
SHAFIZADEH, F., (1981) Basic principles of direct combustion. In: Biomass conversion process for energy and fuels. S.S. SOFER, O.R. ZABORSKY (eds.), Plenum Publishing Corparation, New York: 103-124.
TS 3891, (1983). Yapıstırıcılar-polivinilasetat emilsiyon. Ankara, Türk standartları Enstitüsü.
TS 11878, (1995). Ahşap mobilya-koltuk lamine ahşaptan imal edilmiş. Ankara, Türk Standartları Enstitüsü.
UYSAL, B., ÖZÇİFÇİ, A., (2000). Uludağ Göknarından (Abies bornmülleriana Mattf) PVAc tutkalı ile üretilen lamine ağaç malzemenin yanma özellikleri. Journal of Polytechnic, (3): 1, 23-29.
(2000). Ihlamur (Morus alba L.) odunundan PVAc tutkalı ile üretilen lamine ağaç malzemenin yanma özellikleri. J. Institute of Scince and Technology of Gazi University, (15), pp.121-131.
(2004). The Effects of impregnation chemicals on combustion properties of laminated wood material. Combustion Scince and Technology, (15), pp.121-131.
YALINKILIÇ, M.K., ÖRS, Y. (1996). Duglas Göknarı (Pseudotsuga Menziesii (Mirb) Franco) odununun anatomik ve çeşitli kimyasal maddelerle emprenye edilebilme özellikleri. Turkish J. Agriculture and Forestry, (4), pp.142-150.