啮合同向双螺杆挤出机普通螺纹元件末端共混物的混合形态 Ⅱ.混合形态的计算  

Blend morphology of polymer at outlet of common screw element in co-rotating intermeshing twin-screw extruder Ⅱ.Blend morphology computation

作　　者：杨海波[1] 童玉清[2] 张立群[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]深圳职业技术学院先进制造技术与工程系,广东深圳518055

出　　处：《合成橡胶工业》2005年第4期284-287,共4页China Synthetic Rubber Industry

基　　金：北京市自然科学基金重点资助项目(2031001)。

摘　　要：用物料三维流动路径结合分散模型计算了螺纹元件出口处分散相液滴的直径,分析了螺杆转速、挤出机产量和液滴初始直径对末端分散相液滴直径的影响。结果表明,当液滴初始直径较大时,其集聚变化率随着初始直径的变化而变化较小;提高螺杆转速和降低挤出机产量可以提高螺纹元件的分散效果。当液滴初始直径较小时,其集聚变化率随着初始直径的变化而急剧变化;提高螺杆转速和降低挤出机产量有利于集聚的发生,分散效果较差。螺杆转速和挤出机产量的变化对末端分散相液滴直径的分布范围影响不大。Using three-dimensional particle trajectories dispersed droplet diameter at the outlet of screw element during compounding in a co-rotating intermeshing twin-screw extruder was computed. The results showed that when the dispersed phase droplet initial diameter was relatively large, the coalescence rate little varied as the dispersed phase droplet initial diameter changed and increasing the screw rotation speed and decreasing the output could obviously make for the dispersed effect. When the dispersed phase droplet initial diameter was relatively small, the coalescence rate varied sharply as the dispersed phase droplet initial diameter changed, the coalescence effect was dominating with increasing the screw rotation speed and decreasing the output. The variation of the operating condition did not change the distributive range magnitude of the dispersed phase droplet.

关 键 词：啮合同向双螺杆挤出机 螺纹元件 共混物 混合形态 

分 类 号：TQ330.44[化学工程—橡胶工业]