SPP 1062: Handhabung hochdisperser Pulver

SPP 1062：处理高度分散的粉末

• 批准号: 5469121
• 金额: --
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 1998
• 资助国家: 德国
• 起止时间: 1997-12-31 至 2004-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5469121?language=en
• 关键词: SPP; 1062; Handhabung; hochdisperser; Pulver

While handling highly dispersed powders problems result due to the fact that properties of such particle systems are dominated by surface phenomena and particle interactions. It means that well-known techniques of the mechanical process technology using more especially mass dependent effects are no longer applicable. By the term "handling" all the process steps between the powder preparation and a final application of such powders for processing high quality products are summarised, especially steps like conditioning, mixing, transportation and storage of highly dispersed powders. Such powders are characterised by high values of the specific surface area, with other words, the powder system is far from its thermodynamic equilibrium state leading to a high tendency to stabilising the powder system by phenomena like aggregation, agglomeration, adsorption as well as chemical reactions. The aim of this priority programme is to investigate these phenomena in order to dominate them and to develop techniques for their controlling.

当处理高度分散的粉末时，由于这样的颗粒系统的性质由表面现象和颗粒相互作用主导的事实，导致问题。这意味着使用更特别地质量依赖效应的机械加工技术的公知技术不再适用。术语“处理”概括了粉末制备和用于加工高质量产品的此类粉末的最终应用之间的所有工艺步骤，特别是如高度分散的粉末的调节、混合、运输和储存的步骤。这种粉末的特征在于高的比表面积值，换句话说，粉末体系远离其热力学平衡状态，导致通过如聚集、附聚、吸附以及化学反应的现象使粉末体系稳定的高趋势。这一优先方案的目的是调查这些现象，以便控制它们并开发控制它们的技术。