Results 241 to 250 of about 962,920 (296)
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Rheologica Acta, 1990
This paper studies the slow flow of powders. It is argued that since powders can flow like liquids, there must be equations similar to those of liquids. The phenomenon of a variable density, dilatancy, is described by an analogue of temperature called the compactivity X. Whereas, in thermal physicsT = ∂E/∂S, powders are controlled byX = ∂V/∂S.
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This paper studies the slow flow of powders. It is argued that since powders can flow like liquids, there must be equations similar to those of liquids. The phenomenon of a variable density, dilatancy, is described by an analogue of temperature called the compactivity X. Whereas, in thermal physicsT = ∂E/∂S, powders are controlled byX = ∂V/∂S.
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Rheology of Mixed Powder Plastisols
Powder Metallurgy, 1986AbstractPlastisols of fine iron and hardmetal powders, mixed with binder systems based upon polystyrene and polyethylene, have been formulated from which basic Theological data have been obtained. These data indicate that the plastisols with powder volume loadings up to ∼80% will flow satisfactorily under injection moulding conditions. Viscosity levels
D. A. Issitt, P. J. James
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On the rheology of packed polymer powders
Polymer Engineering & Science, 1980AbstractThe rheology of polystyrene powder beds was examined by two kinds of experiments. From stress relaxation measurements during powder compaction, it was found that relaxation at the shorter times could be attributed to sliding between particles. This is followed by a relaxation attributed to the deformation of the polystyrene particles themselves.
Kaoru Umeya, Ryuichi Hara
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The Journal of the Science of Food and Agriculture, 2023
BACKGROUND Demands for foods conducive to eye health have been on the increase in the global healthcare sector. Marigold powder as a major source of lutein was utilized to produce lutein-fortified breads for ocular health.
Hyuk-Dong Kwon, Dong-un Lee, Suyong Lee
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BACKGROUND Demands for foods conducive to eye health have been on the increase in the global healthcare sector. Marigold powder as a major source of lutein was utilized to produce lutein-fortified breads for ocular health.
Hyuk-Dong Kwon, Dong-un Lee, Suyong Lee
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Powder rheology and compaction behavior of novel micro-granulates for ceramic tiles
, 2020Using spray-dried powders is widely consolidated in ceramic production, especially for porcelain stoneware tiles and slabs. However, a novel micro-granulation process can reduce the consumption of water and energy.
R. Soldati +7 more
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Characterizing the Rheology of Powders by studying dynamic avalanching of the powder
Particle & Particle Systems Characterization, 1994AbstractAvalanching of solids is an important multivariable dependent phenomenon that can be a valuable tool for characterization of solids flowability. Although avalanching by itself is primarily chaotic it appears that the fractal analysis of its avalanching mass data can yield very interesting and significant information that is of importance in ...
Saurabh Rastogi, George E. Klingzing
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Morphology of powders and rheology of stabilized suspensions
Russian Journal of Non-Ferrous Metals, 2008A relation between rheological properties of stabilized suspensions of dispersed powdered metals and their morphological properties is considered. It is shown that the stabilized suspensions belong to pseudoplastic systems and their concentration depends directly on the relative tap density of powders.
V. N. Antsiferov, V. D. Khramtsov
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Rheology in metal powder injection molding
Journal of Central South University of Technology, 2007By experimental investigation, the various viscous models are compared and evaluated. The proper viscose model is selected for the application in the metal powder injection molding processing analysis. The effects of the different processing parameters, such as the viscose parameters, temperature, pressure, die cavity size on the isothermal and non ...
Shu-quan Liang, Yan Tang, Bai-yun Huang
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The Effect of Flowagents on the Rheology of a Plastic Powder
Particle & Particle Systems Characterization, 1995AbstractFlow agents are widely used in industry, such as the plastics and pharmaceutical industry, to promote the flow of cohesive powders. Few studies of the quantitative effects of the flow agents on the flow of the powder have been reported. In this communication the effect of silica flow agents on the flow of a plastic powder is studied by means of
Brian H. Kaye +2 more
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, 2019
Asphalt mastic significantly affects the performance of asphalt mixture. As one of the clean products, activated carbon exhibits better behaviour in engineering and functional performance when adding in the asphalt mixture.
Ziming Liu, Yongdan Wang
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Asphalt mastic significantly affects the performance of asphalt mixture. As one of the clean products, activated carbon exhibits better behaviour in engineering and functional performance when adding in the asphalt mixture.
Ziming Liu, Yongdan Wang
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