In the application of conformal coating, the problem of bubbles is often encountered. Generally, it is necessary to consider in which process the bubbles appear, is there a bubble directly sprayed out? Or spray without bubbles, after heating curing bubbles appear?
In the application of conformal coating, the problem of bubbles is often encountered. Generally, it is necessary to consider in which process the bubbles appear, is there a bubble directly sprayed out? Or spray without bubbles, after heating curing bubbles appear?
If the material comes out of the nozzle with bubbles, you need to consider factors such as coating process pressure, material viscosity, nozzle model, humidity, etc.
If bubbles appear after the furnace, please carefully adjust the furnace temperature curve and the route of the nozzle. In addition, if it is 100% solid content of UV-cured conformal coating, it is not convenient to add diluent to reduce viscosity and improve bubbles.
UV conformal coating mostly does not contain solvents or contain a small amount of solvents, but leveling volatilization is still necessary, and it is not recommended to use compressed air paint cans and atomized coating, it is recommended to use a film pump to reduce the air being pressed into the paint, in addition, it is recommended to sit for 1 hour after adding paint.