| Summary: | 碩士 === 國立中興大學 === 森林學系 === 82 === The objective of this study was to investigate how the board
properties were influenced by the synthetic method of resin
and board manufacturing conditions. The particleboards and
wafer- boards were manufactured by using commercial powdered
UF resin and PF resin synthesized in the laboratory. The
results are presented as follows: 1. The mechanical
properties of boards using powdered UF resin became stronger
with increases of longer heat-press time, resin content, and
density of board, respectively. 2.The mechanical properties of
boards using the two higher F/P mole ratio types of PF resins
were much better than those using the lower one. The
mechanical properties of boards bonded with the lower NaOH/P
mole ratio types of resin were much better.The properties of
the boards using the resin synthesized with longer reaction
time were also much better. 3. The IB of waferboards using
powdered resins were lower than those of particleboards
because of uneven distribution of powdered resins.
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