BGD 226 Meratakan mesin ujian kendur

THIS INSTRUMENT PROVIDES A METHOD OF EVALUATING THE levelING PERFORMANCE OF NEWLY APPLIED COATINGS before CURING, THEREBY REDUCING OR ELIMINATING surface STREAKS CAUSED by brushing OR OTHER coatings. The evaluation of leveling performance with this specially designed applicator is similar to the evaluation of the roll-coating method, but more stable than roll-coating. Because there are various factors that affect the flow level and flow hang, the test of these properties should not be confused with each other. The leveling test is performed on a horizontal test plate. It is not a measure of the flow hang performance. The leveling tester is a U-shaped film applicator with a shallow gap on one side, in which a group of five pairs of narrow V-shaped grooves with equal intervals are cut, and their groove depths are 100,200,300,500 dan 1000 m respectively. The two ends of the leveler are 125mm long and can be used once Apply a 100mm wide drag film. Drag is performed according to the usual procedure on a horizontal test board or cardboard. It produces 5 pairs of coating marks with 10 different depths. After the coating film is dried, observe the distance between each pair of films, and select the minimum spacing (when the two stripes are close together, there is a gap in the middle that is indistinctely visible).