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  • Quality Control of Minidisk Polymer Topcoat Using Nano Scratch Tester and Tribometer
    picture of how the coating will perform in service conditions. Fig. 1 shows typical Tribometer traces for two polycarbonate thin films where a rapid rise in friction can be taken as a measure of coating breakdown under load. Nano Scratch data is presented in Fig. 2 where two distinct critical failure
  • Medical Device Link .
    with light-emitting-diode indicators, a programmable logic controller, and an RS-232 communications port. Coefficient-of-friction tester displays results in real time Data acquisition software can display coefficient-of-friction results in real time. The software also allows users to alter sled
  • Pharmaceutical Powders Small Sample Sizes Yield Big Results
    in test results. The same results given by the larger 263cc shear cell (flow function, bulk density, arching dimension, internal friction angle, rat-hole diameter) are given with the small volume shear cell. The small volume shear cell does have an additional advantage over the larger 263cc shear cell
  • Bulk Density of Powders Made Easy
    defined, not only for bulk density, but for additional flow properties such as flow function, wall friction, arching dimension and rat hole diameter. The Brookfield Powder Flow Tester is a complete instrument for defining powder flow properties.
  • Can You Measure Powder Flowability? (.pdf)
    friction, which allows them to form piles with angles relative to the surface on which they are placed. At ambient conditions, powders do not change flow behavior when subjected to variable shear rates, whereas most liquids do. When loaded into a hopper, pressure can increase the strength (i.e.
  • Processing Milk Powder - The Flowability Challenge
    sample, then shear the powder against itself to measure the amount of friction that will cause resistance to movement. This type of test gives several pieces of information that can be useful, such as flow function and density. Figure 2 shows a typical report that characterizes various blends of milk
  • Can You Predict Powder Flow Behavior By Measuring Density
    whether the powder will flow in gravity discharge from a storage vessel. Once a powder is compacted, the question is how much friction or resistance must be overcome for the powder particles to slide or flow against each other. The density test can only tell us how much compaction has taken place

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