Application of Isocyanate Resin Adhesives for Wood-based Panels

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  • SUGAWARA Masaki
    Polyurethane Resins Laboratory R&D Center, Mitsui Takeda Chemicals, Inc.

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  • 木質ボードへのイソシアネート系接着剤の応用
  • モクシツ ボード エ ノ イソシアネートケイ セッチャクザイ ノ オウヨウ

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The main objectives of this study were to investigate the use of polymeric MDI (P-MDI) with recycle chips from a used particleboard to a new one again. Using melamine-urea-formaldehyde resin (MUF) and replacing 20% of wood chips by the recycled-chips, the bending strength of PB decreased 26% from that of the original.<BR>But using P-MDI, the lowering of board characteristics was depressed comparing with the PB made with MUF resins.<BR>The P-MDI-based PB with formaldehyde-catching additives showed a formaldehyde emmission of 0.3mg/l, and was classified as JIS-EO grade.

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