超声波在超细粉体分散中的应用

Application of ultrasonic in the dispersion of ultrafine powder

超细粉体具有较大的比表面积及表面活性 ,易于吸附而发生凝聚 ,影响了它在改性聚酯中的应用。研究了通过超声波处理超细粉体 ,打开凝聚体 ,使它均匀地分散在分散剂中 ,从而生产出可纺性好的改性聚酯。

According to the larger specific area and surface activity of ultrafine powder,it is easy of adsorption and aggregation.And its application on modified PET is affected.In this article,the ultrafine powder was dealed with ultrasonic,the aggregation powder was broken and dispersed uniformly in the dispersant.The modified PET with good spinnability can be produced in this way.