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  • Controlling Crystallization through Modeling
    control is not well understood. Part of the complexity is that size distribution varies in space and time in a crystallizer due to non-ideal flow patterns and heat transfer. Furthermore, it is dependent upon solution thermodynamics and crystallization phenomena such as nucleation, growth, aggregation
  • Thermoplastic Polymide - Polyetheretherketone Blends with Exceptional High Temperature Properties (.pdf)
    New thermoplastic polyimide (TPI) - polyetheretherketone (PEEK) blends improve high temperature load bearing capability and dimensional stability of PEEK. These phase-separated blends maintain PEEK's fast crystallization rate unlike other one-phase miscible PEEK blends. Blend compositions can
  • Differential Scanning Calorimeters (DSC)
    Differential scanning calorimeters (DSC) measure heat flows and temperatures associated with exothermic and endothermic transitions. They incorporate the most commonly used thermal analysis technique and are used routinely for investigating, selecting, and evaluating materials. DCS are also used
  • Nanostructured Steels Are On The Horizon
    Revolutionary steels devised with nanotechnology may be poised to usher in a new Iron Age. Transmission electron microscope micrograph showing the changes in the microstructure of nanosteel alloys with varying crystallization conditions. (Left) 500C for 100-hr heat treatment showing anisotropic
  • Open Batch Control: Not Quite Plug-and-Play, But Getting Closer
    analysis, FTIR, and NIR are all moving to the plant floor. They enable operators to accomplish such complex tasks as monitoring a polymorph transition during crystallization. Yet unlike field instruments, PAT instruments have traditionally operated as stand-alone entities. They are not easily incorporated
  • Wiremesh Substrates for Oxidation, TWC and SCR Converters (.pdf)
    . Wiremesh substrates provide radial and longitudinal flows (depth flow) and turbulent kinetic energy. The back pressure of the substrate is optimized using different material properties and knitting patterns. Substrate geometry is optimized using different brazing materials and heat treatment
  • Production of Cough Mixtures and Pharmaceutical Syrups
    . * Heating of the mixture will be required to aid solution. This is energy inefficient. * The cooling process after this further adds to costs and process time. * Crystallization of the syrup can occur during heating/cooling. * Active ingredients can be damaged by heat. * Thickening ingredients
  • Phase Behavior of Blends Containing Poly(resorcinol phthalate-block-carbonate) and Poly(ethylene terephthalate) (.pdf)
    and die head temperature. allow for the crystallization to fully develop, the cold. between 250 and 270°C and 150 to 300 rpm screw speed. crystallization is eliminated during the heating scan,. The extruder has 8 independent feeders for different. which is evidenced by the smooth transition

Engineering Web Search: HEAT OF CRYSTALLIZATION Top

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