臺灣博碩士論文加值系統

本研究以市售粉末狀尿素膠及自行合成之粉末狀酚膠壓製粒片板及方薄片
型粒片板，探討粉末膠之合成條件與製板條件對板性質之影響，並以自行
合成之液狀尿素膠與酚膠所製之板為對照組與粉末狀膠所製之板作比較，
所得結果歸納如下：１．粉末狀尿素膠用於粒片板製造，在本研究中所使
用之條件範圍內，所有熱壓溫度下，粉末狀膠均可熔融產生流動性，濕潤
粒片表面，繼而產生三次元鍵結以致硬化；熱壓時間較長者板性質較佳；
隨用膠量增加粒片板強度有增大之趨勢；粒片板之機械強度大致隨板密度
而增大。２．粉末狀尿素膠所壓製之粒片板，其物理及機械性質大致上比
液狀尿素膠製造者良好。３．粉末狀酚膠用於粒片板製造上，在本研究中
所使用之條件範圍內，F/P莫耳比較高的二種粉末狀酚膠壓製之粒片板，
其性質較F/P莫耳比低者佳；NaOH/P莫耳比低者用於製板之強度較佳；膠
合劑合成之反應時間較長，所壓製之粒片板性質較良好；隨用膠量提高，
粒片板之機械性質增大；製板之熱壓時間較長者，膠合劑硬化較完全，粒
片板之性質較佳。４．以適當合成條件所製的粉末狀酚膠用於壓製粒片板
，其性質大致上較液狀酚膠所製者為佳。５．使用液狀膠合劑壓製之方薄
片型粒片板，其用膠量較粒片板少，但各種強度除內聚力外均比粒片板良
好。使用粉末狀膠合劑者，其方薄片型粒片板由於佈膠不均，因此內聚力
較粒片板低，至於其他強度大致上仍比粒片板佳。

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.