本研究針對雙螺桿押出機內螺桿轉速及螺桿組態對於木粉填充高密度聚乙烯之影響進行探討。於實驗前先以流動分析網路法( FAN )模擬熔融態高分子在螺桿內流量與壓降之關係。木粉與高密度聚乙烯之界面使用改質劑進行處理，並針對兩種不同的改質劑及其濃度之影響討論之。實驗結果顯示塑木複材之界面改質對於其機械性質及熱劣化有一定的影響。雙螺桿押出機之操作變數亦為重要之因素。螺桿轉速、進料流量、以及螺桿組態等加工條件雖然對拉伸強度、模數、斷裂伸長量、衝擊能量等機械性質並無顯著影響，但對於複材之灰階比色，則有顯著之效果。 This research studied the effects of screw speed and screw configuration on the twin-screw compounding of wood flour filled HDPE. The pressure profile of melt flow in a twin-screw extruder was simulated with flow analysis network ( FAN ) method. Two kinds of compatibilizers were used, and the mechanism of interface modification were discussed. The experimental results indicate that mechanical properties and thermal degradation were affected by the operating conditions of twin-screw extruder and the interface modification between plastics and wood flour through the addition of compatibilizers. The operating conditions, including screw speed, throughput rate, barrel temperature profiles, and screw configuration did not significantly affect tensile properties and impact properties, but they changed the thermal degradation or the mean gray level of composites profoundly.
