PCB News - What should be paid attention to for PCB moisture-proof insulation?

The circuit board can be called printed circuit board or printed circuit board, and its English name is (printed circuit board) PCB, (flexible printed circuit board) FPC circuit board (FPC circuit board is also called flexible circuit board. Flexible circuit board is a kind of highly reliable and excellent flexible printed circuit board made of polyimide or polyester film. It has the characteristics of high wiring density, light weight, thin thickness and good bending performance, as well as reechas, soft and hard combination plate) -The birth and development of FPC and PCB gave birth to the new product of soft and hard combination board.

If the circuit board wants to achieve moisture-proof insulation in the assembly and use of electronic devices, it must be moisture-proof insulation UV glue of electronic circuit board.

Specific application process of moisture-proof insulation UV adhesive for electronic circuit board:

Best operation: glue or brush directly. If the concentration increases, you can also add diluent

1. Spraying process:

(1) Crcbond uv773 can be diluted with supporting special diluent. With large amount of diluent, the viscosity of glue is low and the thickness of glue coating is thin; on the contrary, the viscosity of glue is high and the thickness of glue coating is thick.

(2) Put the diluted glue into the spray can for spraying.

(3) After spraying, clean the spray pot with diluent.

2. Dip coating process:

(1) Crcbond uv773 can be diluted with supporting special diluent. With large amount of diluent, the viscosity of glue is low and the thickness of glue coating is thin; on the contrary, the viscosity of glue is high and the thickness of glue coating is thick.

(2) Put the diluted glue into the dipping barrel for dipping and coating. The immersion speed of circuit board or components should not be too fast to avoid bubbles. The surface drying time at room temperature is 2-10 minutes, and it is not recommended to heat and dry.

(3) When it is used again after dip coating, if there is skin on the surface, remove the skin and continue to use.