Time-saving and practice-oriented testing method for determining the flow properties of coating materials testing equipment for quality management Technical Description and Operating Manual ASTM D 2801 ASTM D 4400 DIN 55 677

Testing principle Parallel strips of wet film are applied to a substrate using a special paint applicator frame made of stainless steel and featuring slots of various heights. The sag tendency is determined in a vertical flow test, the levelling tendency is ascertained when the specimen is horizontal. The specimen panel is examined visually after the coating has hardened. Levelling test according to ASTM D 28011) The wet film strips are applied to a predefined substrate using the doctor blade for levelling tests. After the specimen has hardened in the horizontal position, the number of double...

The four drawing blades of the film applicator frame feature a total of 24 slots (s. fig. 2). As in the case of Model 419-ASTM, the slot width and the distance between the slots is predetermined. The slot heights vary between 75 pm and 1300 pm. The strips of wet film are applied, preferably to a standard specimen panel made of steel. Subsequent to application, the specimen panel is positioned vertically (film strips running across the panel with the thinnest strip uppermost) and the coating allowed to dry. A suitable thickness gauge is used to determine the thickness of the thickest layer where...