ホウ素化合物による木材の燃焼抑制機構の解明とその応用　（１）　ホウ酸及びホウ酸・アルカリ金属水酸化物で処理されたロ紙及びベイマツ単板の酸素指数

• 蘇 文瑜

  京都大学木質科学研究所

• 畑 俊充

  京都大学木質科学研究所

• 今村 祐嗣

  京都大学木質科学研究所

• 石原 茂久

  京都大学木質科学研究所

書誌事項

タイトル別名

• Mechanism Evaluation and Development of Suppression of Wood Combustion by Boric Compounds. (1).
• Oxygen index of filter paper and Douglas fir veneer treated with boric acid and mixture of boric acid-alkaline metal hydroxide
• ホウ酸及びホウ酸・アルカリ金属水酸化物で処理された口紙及びベイマツ単板の酸素指数

抄録

For evaluation of the fire performance of cellulosic materials treated with boron compounds mixed with alkaline metal chemicals, filter paper and Douglas fir veneers were impregnated with them at different chemical weight gains and tested by oxygen index method. Filter paper and veneers were treated by dipping in the aqueous solutions of boron (boric acid) and alkaline metal chemicals (lithium hydroxide, sodium hydroxide and potassium hydroxide) mixed at the molar ratios of 1:0, 1:0.5, 1:1, and 1:2.<BR>The results attained were as follows;<BR>1) The oxygen index of filter paper and veneers could be raised up at higher rate by impregnation with the mixed chemicals of boric acid and alkaline metal hydroxide than each separate chemical, showing additive effects obtained by the combined use of them on suppression of flammability of cellulosic materials.<BR>2) The molar ratios of boron and alkaline metals which showed the best flame-supperssion ability were 1:0.5 for lithium and sodium, and 1:2 for potassium, respectively, at 30% of chemical weight gain.<BR>3) The remarkable additive effects obtained by the combination of boron and alkaline metals were observed for lithium, and then sodium and potassium in the order. The al-kaline metal chemicals with the lower atomic number were assumed to be more effective on the flammability suppression.<BR>4) The treated veneers performed higher values of oxygen index than filter paper at the same weight gains due to chemical treatment, though no significant difference was recognized for untreated ones.<BR>5)The solubility of boron in water could be raised up by mixing with alkaline metals, and the weight gains of the samples due to dipping in the mixed solutions were remarkably increased.

収録刊行物

• 木材保存

  木材保存 21 (6), 299-305, 1995

  公益社団法人 日本木材保存協会

詳細情報

• CRID: 1390001204293350016
• NII論文ID: 10028290735
• NII書誌ID: AN00240373
• DOI: 10.5990/jwpa.21.299
• ISSN: 18840116
• ISSN: 02879255
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可