초록 |
Recently, rheological measurement and analysis are quite freqently used in material development and production area, such as material characterization, quality control, laboratory analogy and design purpose. F.E.A.R. rheometry (Fast, Easy, Accurate, and Reliable) is a good terminology stand for modern rheological development. Especially screw rheometer is good rheometer to measure shear viscosity and viscoelastics. High accuracy and repeatability of shear viscosity measurement and relaxation time measurement in processing shear rate range are two important feature of this rheometer. Comparison among various rheometer will be dealt in depth and practical application of rheological values are most important in this presentation. |