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Thermo Haake 와 MIT 가 공동 연구 개발한 세계 최초의 용액용 New Extensional Rheometer "CaBER 1" 탄생!
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MCIK
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2010-11-26 (금) 14:09 |
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*Thermo Haake 와 MIT 가 공동 연구 개발한 세계 최초의 용액용 New Extensional Rheometer "CaBER 1" 탄생! Capillary Break Up Rheometer CaBER1 1
 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 CaBER® 1 is the first instrument to change this! Extensional Rheometry 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 CaBER® instrument provides valuable information about the material’s physical properties that rotational rheometers simply can not provide! The CaBER®, built by Thermo Haake, 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 CaBER® system is an easy-to-use extensional rheometer for examining polymer solutions, suspensions, melts, adhesives, emulsions and a variety of other materials. The CaBER® system can be used as an analytical instrument, or as a quality control tool. With a footprint of 40 x 34 cm, the CaBER® is small enough to fit in a fume hood or to be used on a benchtop in the lab or on the plant floor. Specifications: Hencky strains up to ε0 = 10 Strain rate range: Imposed strain rate 0.01 < ε0 < 300 s-1 Strain rate range: Fluid strain rate 10-5 < ε0 < 10 s-1 Shear viscosity range 10-10 6 mPas Plate diameter 4 < Dplate < 8 mm, standard = 6 mm Temperature range 0 - 80 °C Diameter resolution 10 µm System response time 10 ms Dimension (instrument only) 40 x 34 x 60 cm
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