Effects of Surface Coating on Durability Improvement of Particleboard Subjected to Outdoor Exposure

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  • 表面塗装が屋外暴露したパーティクルボードの耐久性の向上へ与える効果
  • ヒョウメン トソウ ガ オクガイ バクロ シタ パーティクルボード ノ タイキュウセイ ノ コウジョウ エ アタエル コウカ

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Description

To improve the durability of a particleboard subjected to outdoor exposure, the surfaces of the board were coated with a polyurethane resin. After five-year exposure, the retentions of modulus of rupture and internal bond strength for the uncoated board were 70.6% and 67.6%, respectively, whereas those for the coated board were 91.3% and 85.0%, respectively, showing that coating of surfaces improves its modulus of rupture and internal bond strength. The surface of an uncoated board is vulnerable to damage by rainwater and sunshine; further, rainwater can easily penetrate into board's interior. However, it is difficult for rainwater to penetrate into the interior of a coated board, which makes such a surface well protected from damage. Therefore, coating increases the durability of the board.

Journal

  • Mokuzai Gakkaishi

    Mokuzai Gakkaishi 59 (6), 361-366, 2013

    The Japan Wood Research Society

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