Rheological Measurements

22 Şubat 2017 - Çarşamba

Zeta Potential Measurement / Creation of Zeta Potential Curve

Zetasizer is used in order to measure particle size, zeta potential and molecular weight measurement and creation of zeta potential curve, which are the most important three parameters in colloid and polimer chemistry. The stability of colloids, commonly used in ceramic and medical industry, is related with zetasizer's magnitude that designates attractive and repulsive forces between particles. Zetasizer device, determining the velocities of particles under a specific potential, calculates zeta potential. Particle velocity and particle size is determined by laser diffraction method. 

The equipment works at a temperature range of 2-90°C, and has a particle size measurement range of (depends on the sample) 0.6 nm - 6 nm. The particle size range that device can measure the zeta potential is 3 nm- 10 μm (depends on the sample) and molecular weight measurement range is 1000 - 2x107 Da.

Rheometer

Rheological properties impact at all stages of material use across ceramic industry – from formulation development and stability to processing to product performance. Examples of rheological measurements include:

•Viscosity profiling for non-Newtonian shear-dependent behavior to simulate processing or use conditions (e.g. sanitaryware slurries, glazes).

•Viscoelastic fingerprinting for material classification to determine extent of solid-like or liquid-like behavior.

•Optimising dispersion stability (all ceramic suspensions).

•Determination of thixotropy of paints and coatings for product application and final finish quality.

Sosyal Medyada Paylaş