Stormer Viscometer measurement of Coating Viscosity

How to measure paint viscosity with Stormer Viscometer?

(1) The viscosity of the coating is measured by a Stormer viscometer, which is the load required to produce 200r/min, expressed in g. It is usually expressed in Krebs unit KV (a logarithmic function of the load required to produce 200r/min speed) to express the 1 removal viscosity for brush coating and roller coating. Architectural paint structure determination, often with a paddle-type rotor and frequency i network: it timer new structure viscometer. The specific test method is as follows. Stir the paint well and transfer it into the container, make the liquid surface of the paint be 9M away from the container lid and keep the temperature of the paint and viscometer at (23±0.2)°C.

(2) Immerse the rotor in the paint so that the liquid level of the paint just reaches the center of the rotor shaft.

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(3) Turn on the power, put the weight on the viscometer's hanger, and measure the load of 200 revolutions within (25~35) seconds.

(4.) Using (3), the measured data is selected to display the 200 r/min on the strobe timer, and the exact weight in grams (fine to 5g). , the line moves along the blade rotation direction, indicating that the rotation speed is greater than 200 r/min, and the weight should be reduced; the line moves in the opposite direction of the blade rotation, indicating that the rotation speed is less than 200 r/min, and the weight should be added. When the speed is less than 200r/min, the frequency timer will display other graphics. Repeat the measurement until a consistent load value is obtained. According to the weight in grams required to produce 200r/min or 100r/30s graphics obtained in the test 1 , find out the KV value from the corresponding corresponding table.