超细微粒,特别是纳米级粒子的研制,在当前的高新技术中己成为一热门领域,在材料、化工、轻工、冶金、电子、生物医学等领域得到广泛应用.超临界流体技术制备超微粉体是一项新技术.本文介绍了近年来开发的一些新方法和新工艺,诸如超临界溶液快速膨胀法,超临界流体抗溶剂法,超临界流体化学反应和超临界干燥法.重点介绍了超临界溶液快速膨胀法、超临界流体抗溶剂法的研究进展及其影响因素.并指出,要将这些技术应用于工业化生产,尚需在理论上有一定的突破.
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