Coating fluid is a coating material, usually a viscous liquid or semi-fluid, used to cover a surface to form a film or coating. Coating fluids are widely used in various industries, such as paint, ink, glue, cosmetics, medicine, etc.
The components of the coating liquid may be a single substance or a mixture of plural substances. They usually include solvents, resins, fillers, pigments, additives, etc. Different coating fluids have different chemical and physical properties, such as viscosity, drying speed, viscosity, hardness, flexibility, gloss, etc.
The quality and performance of the coating solution is of great importance to the quality and performance of the coating. Therefore, it is necessary to carefully control the composition and process parameters when preparing the coating liquid, and to test and evaluate the physical and chemical properties of the coating liquid to ensure the stability and reliability of the coating liquid.
To measure the viscosity of a coating solution with a viscometer, the following steps can be followed:
Prepare viscometer and coating solution. Select a viscometer suitable for measuring the viscosity of coating fluids. The coating solution needs to be thoroughly stirred to ensure a uniform sample.
Select an appropriate temperature according to the characteristics of the coating liquid. Most viscometers operate at 25°C, but some coating fluids require testing at elevated temperatures.
Pour the coating solution into the viscometer test cup, taking care not to exceed the maximum capacity of the cup. Fill the coating solution up to the line on the test cup.
Insert the test cup into the viscometer and measure according to the operating instructions of the viscometer. Typically, the viscometer needs to measure a few millimeters above the coating fluid surface.
Wait a few seconds until the viscometer reading stabilizes. Record the value displayed on the viscometer. Multiple measurements can be taken and averaged if desired.
North and South Chao reminds you: the viscosity of the coating liquid will change with the change of temperature, shear rate, chemical composition and other factors. Therefore, when comparing the viscosity of the coating liquid, it is necessary to compare under the same conditions.
