Many users are aware of the characteristics of the product itself when using the conformal paint, but they have not grasped the change in the characteristics of the conformal paint when the environment, temperature and humidity change. Some precautions in the process of use, for your reference!

1. Viscosity change: The conformal paint will have different viscosity changes before and after use. The flow rate of conformal paint will change with the temperature during the test. The higher the temperature, the faster the flow rate will be.

2. Coating thickness: If a thicker coating is desired, it is best to apply two thinner coatings, and it is required that the second layer must be applied after the first layer is completely cured;

3. The thickness of the film layer: the thickness of the film layer depends on the application method. The amount of diluent added is large, the viscosity of the glue is low, and the thickness of the glue is thin; on the contrary, the viscosity of the glue is high, and the thickness of the glue is thick;

4. Inconvenient coating area: Some PCB circuit board components are inconvenient for coating, such as connectors, software sockets, switches, radiators, heat dissipation areas, plug-in areas, etc. are not allowed to have coating materials, it is recommended to use Tianxiang Tech tearable solder mask cover;

5. Temperature and humidity: All coating operations should be carried out under the conditions that the temperature is not lower than 16°C and the relative humidity is not higher than 75%. As a composite material, the PCB circuit board will absorb moisture. If the moisture is not removed, the three-proof paint cannot fully play its due protective effect. Pre-drying and vacuum drying can remove most of the moisture;

6. Coating repair method: If you want to repair the coated device, you only need to touch the soldering iron directly to the coating to remove the component. After installing the new component, use a brush or solvent to the area [ Thinner] Clean it, then dry it, and then re-coat it with conformal paint.