Dispersion effect in plasticating process with dynamic injection molding machine

作者：Wang, Quan; Qu, Jinping

来源：China Synthetic Resin and Plastics, 2006, 23(3): 43-46.

The mixture of polypropylene (PP) and nano-CaCO3 raw materials were plasticated in an electromagnetic dynamic injection molding machine. The effects of vibration parameter on dispersion in pre-plastication process were studied with scanning electron microscope and differential scanning calorimeter. The results show that the average diameter of nano-CaCO3 tends to decline and the dispersion of CaCO3 get more homogeneous with the increase of vibration amplitude and vibration frequency. The melting point of the composite shifts toward high temperature direction and the blending efficiency is improved, thereby benefiting the formation of perfect crystallite. The experiments have proved that the introduction of vibration force field effectively facilitates the dispersion of CaCO3 in PP matrix and improves plastication effectiveness of the injection machine.

• 出版日期2006-5
• 单位华南理工大学