At present, the measurement of storage stability is generally at different stages to measure its viscosity (or fluidity), drying time and gloss, etc., in order to know whether the performance of the product has declined during storage; Checking should be carried out, so that the performance of the product after a certain storage period can be evaluated. In addition, it is necessary to focus on the sedimentation test of the product, which involves the question of whether the product can be used after a certain period of storage.
The sedimentation test is relatively simple. Generally, a small tank of 1/3 liter is used to store the product for 6 months, then the tank is opened, and a flat-headed P-knife weighing 45 grams is used for testing. Instruments can also be used to measure, that is, press into the ball, measure the force on the sedimentation, and use the instrument to express it. In order to quickly obtain the results of storage stability, artificial accelerated sedimentation tests can be carried out.
