8192020 From the point of view of equivalence.Įach type and brand of paint responds differently to thinning. The temperature of the adhesive has to be controlled with an accuracy of 02 C.Ībout Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy. 592011 To measure viscosity fill a graduated cylinder with the liquid to be measured and mark the liquids positions at the top and bottom of the cylinder. 8302016 Learn how to properly measure coating viscosity for your print applications.ġ poise 110 N sm 2 or 110 Pas. A Ford 4 viscosity cup pn L034-191 is shown in this how to video. To get started measure out a small amount eg pint of the finish youll be using and add the appropriate thinner in 5 increments until the viscosity is in the 17-27 seconds range.Ĭonsistometers are metal troughs with graduations that measures materials as they flow at an incline under their own weight. Some application devices do not work properly if the viscosity is either too low or too high.
Viscosity Formula The viscosity formula is often expressed using Newtons equation for fluids. For instance on printing presses roll coaters coil coaters etc the viscosity must fall within a specified range. Another unit of measurement for dynamic viscosity is poise p where. Normally viscosity would be measured at 25 C. These are available at paint supply stores.
Different viscometers measure viscosity at different shear rate ranges. When measuring the viscosity of paint and that of any fluid the measuring temperature must be included as it has been pointed out in the case of water as it has a great influence on the result.Ī Ford Cup being using to measure the viscosity of a casting clip. In order to achieve the best accuracy it is recommended to perform viscosity measurements at a speed resulting in a torque reading between 45 and 95. Viscosity is a useful measurement when mixing paint for application.
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