Particle characterization by size, shape and surface for contacted particles

Stanley-Wood, N.G.

doi:10.1016/b978-0-408-10708-2.50007-4

Cited by 10 publications

(1 citation statement)

References 96 publications

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“…Finally we note that the observation of an effective exponential repulsion has important implications for tribology, colloid science, powder technology and materials science [24]. For example, the density or volume of granular materials has long been known to have a logarithmic dependence on the externally applied isotropic pressure or stress, as found for example in the compression stage during the processing of ceramic materials [31]. Recent work on the confinement of nanoparticles has also indicated an exponential force upon compression [32], suggesting that this relationship could be prevalent among quite different types of heterogeneous surfaces.…”

Section: Contact Mechanics For a Measured Surfacementioning

confidence: 91%

Contact mechanics: contact area and interfacial separation from small contact to full contact

Chen

Persson

2008

J. Phys.: Condens. Matter

179

168

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We present a molecular dynamics study of the contact between a rigid solid with a randomly rough surface and an elastic block with a flat surface. The numerical calculations mainly focus on the contact area and the interfacial separation from small contact (low load) to full contact (high load). For small load the contact area varies linearly with the load and the interfacial separation depends logarithmically on the load. For high load the contact area approaches the nominal contact area (i.e., complete contact), and the interfacial separation approaches zero. The numerical results have been compared with analytical theory and experimental results. They are in good agreement with each other. The present findings may be very important for soft solids, e.g., rubber, or for very smooth surfaces, where complete contact can be reached at moderate high loads without plastic deformation of the solids.

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Section: Contact Mechanics For a Measured Surfacementioning

confidence: 91%

Contact mechanics: contact area and interfacial separation from small contact to full contact

Chen

Persson

2008

J. Phys.: Condens. Matter

179

168

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Sommer

2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Binding Mechanisms of Agglomerates 2.1. Tensile Strength of Agglomerates Derived from Attractive Forces 2.2. Attractive Forces in Size Enlargement in Air 2.2.1. Electrostatic Forces 2.2.2. Van der Waals Forces 2.2.3. Capillary Forces 2.2.4. Solid Bridges 2.2.5. Influence of Particle Surface Roughness on Binding 2.2.6. Strengthening of Binding Forces 2.3. Attractive Forces of Particles in a Liquid Medium 2.3.1. DLVO theory 2.3.2. Flocculation by Polymeric Flocculants 3. Characterization of Agglomerates 3.1. Particle Size, Particle Size Distribution 3.2. Agglomerate Density and Porosity 3.2.1. Definition 3.2.2. Densities 3.2.3. Porosities 3.3. Agglomerate Strength 3.4. Redispersion 4. Size Enlargement Processes 4.1. Growth Agglomeration (Pelletization) 4.1.1. Agglomeration Kinetics 4.1.2. Pan and Drum Agglomeration 4.1.3. Mixer and Fluidized Bed Agglomeration 4.1.3.1. Pan and Drum Mixers 4.1.3.2. Horizontal Mixers 4.1.3.3. High‐Speed Mixers 4.1.3.4. Fluidized‐Bed Agglomeration 4.2. Agglomerate Formation from Moist Material 4.2.1. Introduction 4.2.2. Agglomeration Equipment for Plastic Materials 4.3. Drying Processes 4.3.1. Atomization Drying 4.3.1.1. Fundamentals of Atomization Drying 4.3.1.2. Fluidized‐Bed Spray Drying 4.3.1.3. Combination Processes 4.3.2. Contact Drying 4.3.3. Vacuum Drying 4.4. Spherical Agglomeration 4.5. Pressure Agglomeration 4.5.1. Compression Equations 4.5.2. Stamp Presses 4.5.3. Roller Presses 4.5.4. Tableting 4.5.4.1. Tableting Equipment 4.5.4.2. Tablet Pressing 4.5.4.3. Tableting Problems 4.5.4.4. Effect of Compression Rate and Humidity

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Bück

Tsotsas

Sommer

2014

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Particle Characterization 2.1. Particle Size, Particle‐Size Distribution 2.2. Additional Particle Properties 2.2.1. Particle Density 2.2.2. Particle Porosity 2.2.3. Flowability 2.2.4. Strength 2.2.5. Redispersion 2.2.6. Particle Moisture 3. Size Enlargement by Agglomeration 3.1. Binding Mechanisms of Agglomerates 3.1.1. Tensile Strength of Agglomerates Derived from Attractive Forces 3.1.2. Attractive Forces in Size Enlargement in Air 3.1.3. Attractive Forces of Particles in a Liquid Medium 3.2. Size Enlargement Processes 3.2.1. Growth Agglomeration (Pelletization) 3.2.2. Agglomerate Formation from Moist Material 3.3. Applications 3.3.1. Pressure Agglomeration 3.3.2. Spherical Agglomeration 3.3.3. Tableting 4. Size Enlargement by Coating and Layering 4.1. Description 4.2. Coating and Layering 4.2.1. Kinetics 4.2.2. Spraying Equipment 4.2.3. Coating and Layering Processes 4.2.4. Applications 5. Drying Processes

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Particle characterization by size, shape and surface for contacted particles

Cited by 10 publications

References 96 publications

Contact mechanics: contact area and interfacial separation from small contact to full contact

Contact mechanics: contact area and interfacial separation from small contact to full contact

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