日本欧美午夜福利-久久精品国1国二国三-欧美精彩狠狠色丁香婷婷-欧美成人在线免费观看-午夜看片在线免费观看-欧美区日韩在线观看-国产激情在线观看

Six stroke rods with hemispherical contacts, installed on three independent sliding frames. Each channel can have its own set running time to test different samples separately. The rod is driven by a sliding frame and comes into contact with the new coating . Starting from one end, it moves longitudinally on the sample. The movement time can be measured by the scale on the edge of the channel, corresponding to the various drying stages of the observed trajectory. The coating is pre applied on glass strips with a width of 23mm and a length of 340mm, using a square preparer for coating. The principle of a drying time recorder is d on the mathematical formula: distance=velocity x time.

 

ISO 9117-4、ASTM D 5895