Dongguan QiMao Electronics Co., Ltd.

1. Clean and bake the board to remove moisture and moisture. The dust, moisture and oil stains on the surface of the object to be coated must be removed first, so that it can fully exert its protective effect. Thorough cleaning ensures that corrosive residues are completely removed and that the conformal coating adheres well to the board surface. Baking conditions: 60°C, 10-20 minutes, it is better to apply while hot after taking it out of the oven.

2. When applying the three-proof paint by brushing, the brushing area should be larger than the area occupied by the device to ensure that the device and pad are fully covered.

3. When brushing the three-proof paint, the circuit board should be placed as flat as possible. There should be no dew after brushing. The brushing should be flat and there should be no exposed parts. It is suitable between 0.1-0.3mm.

4. Before brushing and spraying the conformal paint, ensure that the diluted conformal paint is fully stirred, and leave it for 2 hours before brushing or spraying. Using a high quality natural fiber brush, lightly brush and dip at room temperature. If a machine is used, the viscosity of the paint should be measured (with a viscosity agent or flow cup), and a diluent can be used to adjust the viscosity.

5. The circuit board components should be immersed in the paint tank vertically. The connector should not be immersed unless carefully covered, and the circuit board should be immersed for 1 minute until the bubbles disappear, and then slowly taken out. A uniform film will be formed on the surface of the circuit board. Most of the paint residue should be allowed to flow from the board back to the immersion filmer. TFCF has different coating requirements. The immersion speed of circuit boards or components should not be too fast to avoid excessive bubbles.

6. When using it again after dipping, if there is crusting on the surface, remove the skin and continue to use it.

7. After brushing, lay the circuit board flat on the bracket and prepare for curing. The method that needs to be heated is to accelerate the curing of the coating. If the coating surface is uneven or contains air bubbles, curing in a high temperature oven should be left at room temperature for an additional time to allow the solvent to flash out.