The Effect of Culm Age, Height, Node and Adhesive on the Properties of Bamboo Oriented Strand Boards
Abstract
The effects of native character on the properties of strands board made from bamboo were evaluated, and the effect of mixing adhesive usage on durability property of the board was experientially researched. The strands of bamboo were classified under different bamboo age, height, and node or internode. The sorted strands were manually formed into strand mats and hot-pressed into strand boards using consistent parameters. Analysis of variance was used to analyze the significance of factors. The results of this study indicated that bamboo age was an insignificant factor for both MOR, MOE, and thickness swelling (TS), but significant for internal bond (IB) strength. The bamboo height and nodes in the core layer were a significant factor for parallel MOR, parallel MOE, and IB, whereas two factors had minimal effect on TS. Phenol-formaldehyde resin (PF)/emulsion polymer isocyanate adhesive (MDI) mixed-adhesive bonded board (type 6 PF/ MDI) had less TS and higher MOE retention than MDI only bonded board (type 6) when strand boards were subjected to boiling treatments. This proved that it was more durable, and could be considered as a potentially suitable raw material for moisture/heat–resistant panel for these specific applications.
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