![]() ![]() KU-3 Viscometer and FAST Viscometer from AMETEK Brookfield have rugged designs and are used widely for Viscosity measurements on paints, inks and coatings. In other words, if a highly viscous paint is applied using a sprayer, the result may not be something desirable, or it might even resist the application. Paints and coatings: The Viscosity of a paint is nothing but its thickness which plays an important role in determining how easily it can be applied using either a brush, a sprayer, or a roller. Therefore, if you want your adhesive to flow easily and spread out, or if you want the adhesive to be thicker and to stay where it’s applied, the viscosity must be properly controlled.ĪMETEK Brookfield’s Gel Timer Instruments, namely, the DVNext Rheometer with Gel Timer Functionality and Gel Timer DV2T Instrument are specially designed to measure the curing time of adhesives, polymers etc. For instance, a low viscosity adhesive will flow faster than the high viscosity one. ![]() In fact, the viscosity of the food item has to be aligned with the production process to ensure optimized product flow and proper packaging.Īdhesives : To get the suitable viscosity of an adhesive, consider the required flow of the product. ![]() The viscosity of a product for instance, mayonnaise sauce or a ketchup, will determine the rate at which it flows through a pipe, how long it takes to set or dry, or even how easily it can be dispensed into packaging. Let us see examples of how Viscosity applications find their way in some industries.įood Industry : When it comes to production efficiency, cost-effectiveness, or quality, viscosity measurements play a crucial role. When the correct testing and measurement methods are used, the result will surely be a consistent and good quality product. Conversely, if it is too thick, it would be hard to dispense it from the tube! Viscosity measurements can be used to help maintain quality and consistency in your products.Īt AMETEK Brookfield, we follow this simple rule: It is essential to ensure products have the look and feel that customers are expecting For example, if toothpaste is very runny, it would be challenging to use. Viscosity is a widely measured property and is critical, especially when it comes to quality testing in a wide range of industries. Like friction in moving solids, viscosity determines the energy required to make a fluid flow. In other words, it can also be referred to as friction between the molecules in the fluid. Examples of such fluids are toothpaste, cosmetic creams, jam, mayonnaise, etc.Īt a molecular level, the interaction between molecules in a fluid causes viscosity. While water and honey, which are Newtonian fluids, behave this way, most fluids fluctuate depending on the shear rate -these other fluids are called non-Newtonian fluids. However, this is only true for some fluids. At a given temperature and shear stress, the viscosity of a Newtonian fluid would remain constant regardless of changes to the shear rate. This is where the Newtonian and Non Newtonian concept comes in. Water has low viscosity, whereas honey and oil both have higher viscosities.įluids may respond differently to changes in shear rate. Why does water flow faster than honey or oil? It is basically because of the difference in viscosities. In simple terms, viscosity can be referred to as the thickness of a fluid. Shear rate is the measure of the change in speed at which intermediate layers move with respect to one another. Shear stress is the force per unit area required to move one layer of fluid in relation to another. Viscosity is the measure of a substance's resistance to motion under an applied force – as per the definition.Ĭentipoise (cP), which is the equivalent of 1 mPa s (millipascal second). When there is relative motion between layers of fluid, viscosity can be defined and measured. Simply put, a fluid’s internal resistance to flow is called viscosity. Well, let’s begin by understanding what viscosity is and how it influences the quality of a product. Have you ever wondered why it takes more force to stir honey or oil than water or even milk? Why do some materials flow with greater ease than others? Or better still, why is this attribute even important in the world of testing and quality control?Ĭlearly, the attribute that we are talking about here is nothing but, Viscosity.
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