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Постійне посилання колекціїhttps://dspace.nuft.edu.ua/handle/123456789/7522
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Документ Energy parameters of the process of ultrafine grinding og medical and cosmetic components in the bead mill(2021) Hrininh, Kateryna; Gubenia, Oleksii; Chepeliuk, OlenaThe process of ultrafine grinding of components of medicines and cosmetics in a laboratory bead mill is considered. The purpose of the study is (1) to determine the energy parameters of the process of ultrafine grinding of medicinal and cosmetic components in a bead mill, as well as (2) to determine the dependences of changes in technological parameters. A suspension of castor oil and cosmetic pigment in a ratio of 60% oil and 40% pigment was used as a model body. A series of experiments was carried out, where the degree of grinding was determined using a microscope with a built-in camera and software, the temperature was measured with ds18b20 temperature sensors, the power was measured with a three-phase CNFAJ Intelligent Power Meter. When grinding the pigment "red 120" for a period of time from 0 to 45 minutes, the power decreases, the temperature of the "beads-product" system increases, and the particle size decreases. This process occurs most intensively in the first 5 minutes. Most of the energy is spent on the work, which is spent on mixing the system "beads-product", and the work, that is spent on heating the structural components of the product and the parts of the mill interacting with them, which, in turn, depend on rheological properties of the suspension.Документ Energy parameters of ultrafine grinding of pharmaceutical and cosmetic ingredients in the bead mill(2020) Hrininh, Kateryna; Gubenia, OleksiiThe energy parameters of the grinding process of the components of pharmaceutical and cosmetic preparations in a bead mill are considered. The purpose of research - to determine the energy parameters of ultrafine grinding of pharmaceutical and cosmetic ingredients in the bead mill. A series of experimenters was conducted where the degree of grinding was measured using USB Digital Microscope and software, the temperature was measured with a TPM-10 electronic thermometer, and the power was measured with a CNFAJ Intelligent Power Meter three-phase wattmeter. As a result of the study, we can conclude that most of the energy is spent on the work of mixing the beadproduct system and the work spent on heating the structural components of the product and the interacting parts of the mill, which, in turn, depend on the rheological properties of the suspension.Документ Features of a ultra-fine grinding by wet metod in bead mills(2017) Hrininh, Kateryna; Gubenia, OleksiiIt was conducted an analytical review of the features of ultra-fine grinding in bead mills by wet method. The aim of the study was to reveal unexplored features of ultra-fine grinding processes by wet metod in bead mills with their subsequent study. As a result of the analysis, a relationship was found between mechanical energy and the degree of dispersion by grinding the suspension, the intensity of grinding over time, the temperature rise of the suspension, depending on the degree of dispersion. As a result of the analysis, no relatioship was found between the temperature rise of the grinding material and the power, the density of the dispersing suspension and its viscosity. In further studies, special attention should be paid to the relationship between the density of each of the dry bulk components and their wet mixes with energy that is consumed for grinding, the relationship of the degree of grinding to the time that is spent on achieving a given parameter, and what part of the mechanical energy is converted into heat in depending on the grinding time.