Three-proof paint is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion, thereby extending their service life and ensuring the safety and reliability of use.
Under real conditions, such as chemical environments (fuels, coolants, etc...) , vibration, high dust, salt spray, humidity and high temperature, etc. , circuit boards may suffer from corrosion, softening, deformation, mold, etc., leading to circuit failures on the board.
Three-proof coating is applied to the surface of the circuit board to form a lightweight, flexible film with a thickness of about 25-50 microns. It protects the circuitry from damage under the harsh conditions described above.
Three-proof paint has many names, including three-proof adhesive, moisture-proof adhesive, insulating adhesive, moisture-proof oil, three-proof oil, moisture-proof agent, conformal coating, coating, protective paint, covering adhesive, coating adhesive, waterproofing adhesive, conformal coating, general-purpose coating and so on. The English name is conformal coating.
Transparent three-proof paint can improve the appearance of the printed circuit board, the brightness is in place, like wearing a layer of airtight but beautiful clothes.