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How fiber acidity affected functional properties of dry-formed hardboards



How fiber acidity affected functional properties of dry-formed hardboards



USDA Forest Service Research Paper, Forest Products Laboratory, Madison (FPL 282): 8



Pressure-refined fibre of red oak and balsam fir was adjusted to one of 4 acidity levels before treatment with one of 2 PF resins. Strength tests showed that for each resin type there was an optimum fibre acidity. At this optimum, red oak boards had strength properties comparable with those of balsam fir boards. In mixed red oak/balsam fir boards adjusted to the same pH, the proportion of red oak fibre had little effect on board properties.

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Accession: 000903440

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