Measurement of coating viscosity for water-based industrial coating performance testing!

Viscosity is a physical and chemical property of a substance, that is, when the fluid flows, there is resistance in the fluid that hinders its relative flow

How to measure the viscosity of water-based industrial coatings? Here are two common measurement methods

Method 1: Tu-4 viscometer measurement method

Coating-4 measurement standard: "Coating Viscosity Determination Method" GB/T 1723-1993 coating online coatingol.

Instruments and medicines needed for measurement: Tu-4 viscometer (Figure 1), stopwatch, 150mL enamel cup, glass rod

Measurement steps:

1.

2.

3.

4.

Method 2: Measurement method of digital display Stormer viscometer

Digital Display Stormer Viscometer Measurement Standard: "Determination of Paint Viscosity by Stormer Viscometer Method" GB/T 9269-2009

Instruments and medicines needed for measurement: digital display Stormer viscometer (Figure 2), stopwatch, thermometer

Measurement steps:

1.

2.
Pour the well-stirred sample into a 500 mL container so that the liquid level is within 20 mm from the top of the container
.
Adjust the temperature of the sample to (23 ± 0.
5) °C and maintain this temperature during the test
.
The viscometer should also be adjusted to this temperature
.

3.
If the specified temperature is not reached, record the temperature at the beginning and end of the sample to the nearest 0.
5°C
.
When the temperature of the sample reaches equilibrium, perform the operation according to the procedure specified by the instrument manufacturer
.

4.
After reading the data, stop the instrument and make the sample on the blade shaft flow out
.
Remove the blade shaft and clean it
.