啮合同向双螺杆挤出过程新型混合元件—六棱柱元件实验研究

前文^1]对啮合同向双螺杆挤出过程中的新型混合元件－六棱柱元件的流场了三维等温牛顿模拟，并将其结果与捏合块元件作了对比，得到了在相同压差下六棱柱元件比捏合块元件产率高，剪切速率场和剪切应力场分布更均匀，且两种元件分散混合能力相近的结论。本文对六棱柱元件的流场模拟结果进行了实验验证，证明流场模拟计算的方法可行，得到的结果可靠。进而利用多种有效方法，对六棱柱元件的挤出，混合特性进行了实验研究、实验结果表明，六棱柱元件比捏合块元件比能耗小，出料温度低，分布混合能力强，且六棱柱元件适于玻璃纤维增强改性加工过程。

Experimental Test and Verification on Mixing Ability of FTX Polygon in Intermeshing Co-Rotating Twin-Screw Extrusion

In the former paper , a three dimensional flow field simulation of a new mixing element FTX polygon was carried out in intermeshing co rotationg twin screw extrusion.A comparison was made between the flow fields of FTX polygon and kneading block.Several results were got as following:FTX polygon has higher output,shear rate field and shear stress field of FTX polygon distribute more uniformly than those of kneading block, and the dispersive mixing ability of FTX polygon is equivalent to that of kneading block.In this paper, experiments are carried out to test and verify the flow field simulation results and mixing ability of FTX polygon.It is proved that the method of flow field simulation is feasible and its results are credible.The results of the experiments can be concluded as:specifc energy consumption and melt temperature of FTX polygon are lower, and distributive mixing ability of FTX polygon is better than those of kneading block.FTX polygon adapts to fiberglass reinforcement modification.