八ホウ酸二ナトリウム四水和物で処理したランバーコア合板の防腐性能

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書誌事項

タイトル別名
  • Preservative Effectiveness of Lumber-Cored Plywood Treated with Disodium Octaborate Tetrahydrate.
  • 8 ホウサン 2 ナトリウム 4 スイワブツ デ ショリ シタ ランバーコア ゴウハン ノ ボウフ セイノウ

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説明

Lumber-cored plywood was prepared with paraserianthes falcataria as a core wood, which was impregnated with disodium octaborate tetrahydrate (DOT, Timbor®), and its preservative effectiveness was estimated in the laboratory test. Pressure treatments with 0.12-0.5% DOT provided P.falcataria with high permeability, and mean liquid uptake of this timber species ranged from 607 to 651kg/m3.<BR>DOT penetration into the overall cross section at the central part was observed for all specimen tested. treatment. Retention of DOT, expressed as boric acid equivalent (BAE), in the central part of a specimen, however, was 60 to 70% of the retention at the end of the specimen. Laboratory decay test showed that the retention of DOT over 2kg/m3 BAE in core wood was required to inhibit attack by a brown-rot fungus, Fomitopsis palustris, and over 1kg/m3 BAE against a whiterot fungus, Trametes versicolor. Brush-treatment of face veneers or glue-line treatment was also effective in protecting lumber-cored plywood from decay fungi.

収録刊行物

  • 木材保存

    木材保存 28 (2), 61-67, 2002

    公益社団法人 日本木材保存協会

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