Fluid Stretching Rheometer (CaBER 1)-Fornitore globale

Room 405, Building B, Jinhong Industrial Park, No. 55 Luojin Road, Shanghai (200237) (Shanghai headquarters)

1、 Instrument Introduction
The knowledge of the stretching behavior of fluids is important for both industry and basic research. Complex flows containing strong stretching components exist in many industrial processes and applications. For example, extrusion flow, coating flow, compression flow, and fiber spinning flow. Compared to shear flow, most materials exhibit very different reactions in tensile flow. The refinement and fracture of fluid filaments analyzed using CaBER instruments provide valuable information about material properties, which cannot be provided by rotational rheometers!

2、 Operating principle
Place a small amount of sample (<1ml) between two circular plates. The upper plate quickly separates from the lower plate at the strain rate set by the user. Therefore, an unstable fluid filament is formed. After the stretching stops, the fluid at the midpoint of the filament is subjected to a tensile strain rate determined by the tensile properties of the fluid. The laser micrometer monitors the variation of the midpoint diameter of a gradually thinning fluid filament over time. The antagonistic effects of surface tension, viscosity, mass conversion, and elasticity can be quantified by corresponding models in the software. Automatic experimental analysis and model comparison provide quick definition of the following parameters: viscosity, surface tension, elasticity, relaxation time, and filament fracture time.

3、 Technical indicators

HAAKE CaB HAAKE CaBER 1
Hencky strain	e_o= 10
Strain rate range:	Applied strain rate	0.01<strain rate<300 s^-1
	Fluid strain rate	10^-5<Strain rate<10 s^-1
Shear viscosity range	10-10⁶mPa.s
Plate diameter	4 < D_plate<8 mm, standard=6 mm
temperature range	0 - 80°C
Resolution of wire diameter	10 mm
System response time	10 ms
Instrument size	40 ´ 34 ´ 60 cm

4、 Main features
1. A commercial rheometer for measuring the tensile properties of fluids The refinement and fracture of fluid filaments analyzed using CaBER instruments provide valuable information about material properties, which cannot be provided by rotational rheometers!
2. Fully computer-controlled, easy to operate; Easy to sample and clean;
3. First level laser micrometer, linear motor driven variable speed, automatic repeat testing
4. Small sample size (<1ml), variable geometry, user-defined strain