Titre : |
Rheology for coatings : Essential notions one need to know |
Type de document : |
texte imprimé |
Auteurs : |
M. Veeramani, Auteur |
Année de publication : |
2021 |
Article en page(s) : |
p. 107-108 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Revêtements en phase aqueuse:Peinture en phase aqueuse Rhéologie
|
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
While understanding the rheology of any formulation, clarity around the core fundamentals enables efficient management of the rheological properties of your product. Let us begin by understanding some fundamentals terms. What is viscosity ? Viscosity and rheology are often confused, and they are significantly different concepts. While rheology is the study of flow, viscosity, a part of rheology, can be obtained from rheological measurements. Viscosity is a measurement of the fluid's resistance to flow and a function of shear rate or stress, with time and temperature dependence. In rheological measurements, the strain rate is related to the measurement of the deformation and stress is related to the measurement of the for required to deform a material. Shear stress (τ; Pa), one of the main parameters studied in rheology, is the force per unit area that a fluid requires to start flowing. Shear rate (γ; s-1) describes the velocity gradient. It is the rate at which a fluid is sheared or "worked" during flow. |
Note de contenu : |
- Pseudo-plasticity
- Newtonian fluids
- Non-newtonian fluids
- Thixotropic liquids
- MEASURING RHEOLOGICAL PROPERTIES : Accurate temperature control - Narrow sample gap - Accurate speed measurement over a wide range - Oscillatory measurements - Predicting paint behaviour |
En ligne : |
https://drive.google.com/file/d/1fLobZFZ5eIbVuW4YBe37nZYrK_fzPonS/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36468 |
in PAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 107-108