코팅 재료의 최신 분별법: Optimizing and forcasting the filling behaviour of coatings with the Haake extensional rheometer CaBER-1
|HAAKE CaBER 1 Extensional Rheometer|
|Materials that behave similarly in a shearing flow often behave very differently in an extensional flow. The unique HAAKE CaBER 1 rheometer provides valuable information about the material's extensional properties that rotational rheometers simply cannot provide. With the CaBER 1, stringiness, filament breakup-time and extensional viscosity can be quantified to quickly optimize your fluid formulations|
Many different experimental techniques for measuring the elongational properties of non-Newtonian fluids have been developed over the last 30 years. All these techniques were difficult to operate, generated complex flows and therefore confusing results. As a consequence successful commercially available instruments did not exist. The HAAKE CaBER 1 is the first instrument to change this!
Knowledge of the elongational behavior of fluids is important for both industrial and basic research purposes. Complex flows that contain strong extensional components occur in many industrial processes and applications. Some examples are extrusion flows, coating flows, contraction flows and fiber spinning flows. Most materials exhibit very different responses in an extensional flow compared to a shearing flow. The thinning and breakup of a fluid filament that is analyzed with the HAAKE CaBER 1 instrument provides valuable information about the material’s physical properties that rotational rheometers simply can not provide!
The HAAKE CaBER 1, built by Thermo Electron (Karlsruhe), was developed by Cambridge Polymer Group (CPG) based on the pioneering work of Russian scientists Entov, Rozhkov and co-workers in capillary breakup rheometry. The HAAKE CaBER 1 system is an easy-to-use extensional rheometer for examining polymer solutions, suspensions, melts, adhesives, emulsions and a variety of other materials. The HAAKE CaBER 1 system can be used as an analytical instrument, or as a quality control tool. With a footprint of 40 x 34 cm, the HAAKE CaBER 1 is small enough to fit in a fume hood or to be used on a benchtop in the lab or on the plant floor.