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148 Ileana Fulga and Eugen Strajescu The effect of the micronization about the dispersed pigments can be observed the besting the case of the sample of Prussian Blue (fig. 4): being in a non micronized stadium this pigment presents agglomerates at 100-150 μm, whiles after the micronization it is to observe a granulometry contained between 20-25 μm. Fig. 4 – Pigment (Prusia blue) nonmicronizes = 150 μm (left) and micronized = 20 μm (right). Fig. 5 – Example of cosmethic powders micronized with optimization algorithms; visualization on microscope with phase contrast. Even without the microscope or another magnifier, from the photos' observation it is to note the intensification of the chromatic coverage of the pigment (fig. 2), because after the micronization, the specific surface of the product is majorized for 2000 - 3000 times, and particles are very uniform from the point of view of the granulometry. Another object of the optimization is the getting of a micronization with a plain classification room, in order to not charge to frequent the mill (fig. 6).
Bul. Inst. Polit. Iaşi, t. LVI (LX), f. 2, 2010 149 Fig. 6 – Example for an optimized production for the filling up of the classificatory. We can observe the fact that after the micronization, all the materials are grinded at granulometry about 15-30 μm, with a remarkable uniformity. We make the assignation that in this paper where presented only the non confidential elements that show the optimization. We present (fig. 5) an example of a technological process for the getting of cosmetic powders micronized with optimization algorithms. In fig. 6 and 7 we present micronized powders realized with optimization algorithms (visualization on microscope with phase contrast). We can affirm that the
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BULETINUL INSTITUTULUI POLITEHNIC D
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Papers presented at THE INTERNATION
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SILVIU BERBINSCHI, VIRGIL TEODOR, N
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CONSTANTIN CHIRIȚĂ, ADRIAN HANGAN
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Stachie Marius 221 Storm Kjærside
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