The Effect of Liquid Nitrogen on Retention in Uludağ Fir Wood Treated with Boric Acid and Borax

In this study, the effect of liquid nitrogen on retention of Uludağ Fir wood after exposure to boric acid and borax was determined. Before treating with liquid nitrogen, specimens were conditioned to 4 different moisture contents (oven dry, 12%, 28%, and green). Liquid nitrogen treated specimens for 1 hour, 4 hours and 10 hours. Then, all specimens were conditioned to 12% moisture content (MC). Test specimens were exposed to chemicals such as borax and boric acid for three times: short (2 min), normal (1 hour) and long (1 week). Dipping method was used for the impregnation process. For control, specimens were treated with borax and boric acid without treating with liquid nitrogen. Consequently, there is a linear relationship between moisture content and retention. Since moisture content increases the amount of retention increases as well.

Kaynakça

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Baysal, E., 1994. Some physical properties of Calabrian pine wood treated with borates and water repellents. M.Sc. Thesis, Karadeniz Technical University, 114 p.

Drysdale, J.A., 1994. Boron treatments for the preservation of wood. A review of efficacy data for fungi and termites. The International Research Group on Wood Preservation. Document IRG/WP, 8 p.

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M.K. Yalinkilic, M. Takahashi, Y. Imamura, E.D. Gezer, Z. Demirci, R. Ilhan, 1999. Boron addition to non or low formaldehyde cross-linking reagents to enhance biological resistance and dimensional stability for wood, Holz als Roh-und Werkstoff, 57, pp. 351–357

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Wood Handbook-Wood as an Engineering Material. 1999. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory.

Kaynak Göster

  • ISSN: 1303-2399
  • Yayın Aralığı: Yılda 3 Sayı
  • Başlangıç: 2001

6.3b4.6b

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