Autohesion of Inorganic Compound Powders
| Autor: | A. V. Smirnov, A. A. Vasin, V. V. Belov, O. L. Sidortsova, V. P. Tarasovskii, A. D. Shlyapin, V. V. Rybal’chenko |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Technology Materials science Chemical technology TP1-1185 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 020401 chemical engineering Chemical engineering chemistry General Materials Science 0204 chemical engineering 0210 nano-technology Inorganic compound |
| Zdroj: | Reviews on Advanced Materials Science, Vol 57, Iss 1, Pp 121-132 (2018) |
| ISSN: | 1605-8127 |
| Popis: | The article begins with analytical review of the works performed from 1940 up to nowadays, concerning the phenomenon of autohesion in the powders of inorganic compounds. The issues of terminology are concerned, the difference is discussed between the phenomena of autohesion, adhesion, and cohesion. Three groups of the components of autohesion forces are considered: van der Waals and electrical forces, cohesion and capillary forces and mechanical cohesion, as well as internal and external factors affecting these forces. The second part of the article is devoted to the results of experiments performed to study the influence of the autohesion forces on the properties of friable inorganic powder materials. In particular, the rheological properties of powders were studied by static and dynamic methods on four kinds of electrocorundum powder with similar particle size and particle size distribution corresponding to the class of grinding powders F1200 according to FEPA standard. Special attention is paid to assessing the effect of humidity on technological properties of the powder, obtained by spray drying of ceramic slurry. This powder is widely used as a component of building mixes. The authors came to conclusion that detailed study is necessary of the autohesion effect on the parameters of friable systems for the rational choice of technological modes. The work can be useful for researchers and practitioners associated with the problems of processing, storage and transportation of powder materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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