Coating technology: Determination of electrophoretic permeability

Core tips: 1 Electrophoretic coating equipment and materials: ① Electrophoresis coating penetration box a Test plate: phosphatized steel plate, size: (300-350) × 105 × 0.75mm b Spacer strip: two UPVC strips, size: 4 × 10 × (300-350) mm c Waterproof tape: 20 mm and 38 mm wide ② Electrophoresis tank: PVC plastic tank, with inner wall size of 120 × 200 × 350mm, Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Coating home news: 1 Electrophoretic coating equipment and materials: ① electrophoretic coating penetration box A test board: phosphatized steel plate, size: (300-350) × 105 × 0.75mm B spacer: two UPVC strips, size: 4 × 10 × (300-350) mm C waterproof tape: two kinds of width: 20mm and 38mm ② electrophoresis tank: PVC plastic Groove, inner wall size is 120 × 200 × 350mm, filling height is 300mm, equivalent to 7200ml ③ The anode (suitable for cathodic electrophoretic coating) is made of stainless steel plate, with the size of 1 / 4-1 / 2 of the cathode area of the coating It is located on the longitudinal side of the electrophoresis tank and placed relative to the cathode volt box For anode electrophoretic coating, it is cathode ④ Electrophoresis device: 0-400V adjustable 2 Determination method of electrophoresis permeability of electrophoretic coating: ① fabrication of electrophoresis permeability box: A test plate: phosphorized steel plate, size: (300-350) × 105 × 0.75mm B spacer: two pieces of UPVC strip, size: 4 × 10 × (300-350) mm C waterproof tape: two kinds of width: 20mm and 38mm ② Put the permeability box into the matured electrophoresis tank, so that the distance between the bottom of the box and the bottom of the tank is 60 ± 5mm, and the distance between the box and the electrophoresis tank wall is 30 ± 2mm; ③ the distance between the voltage box and its corresponding electrode is 155 ± 2mm; ④ connect the power supply, raise the voltage to the specified voltage within 15s, and disconnect the power supply after electrophoresis for 3min; ⑤ take out the permeability box, tear off the tape on both sides of the fixed test board, and take out the spacer; ⑥ Wash the test board with deionized water, and then dry the test board according to the specified drying conditions of the electrophoretic coating; ⑦ clean the strips for reuse 3 The results show that the average length of paint film on the inner surface of each test plate is calculated in mm, which is the value of visual penetration of paint Note: ① the average value of the two tests shall be taken as the test result; ② the corresponding voltage shall be indicated when recording Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,