The function and application process of three anti - paint for circuit board

发表于2020-06-23

  1. Triple rust paint is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion. Three anti - paint has good resistance to high and low temperature; Upon curing, it forms a transparent protective film that protects the circuit from chemicals (such as fuel, coolant, etc.), vibration, moisture, salt spray, moisture, and heat. In these cases, the circuit board may be corroded, mold growth and short circuit, etc., has excellent insulation, moisture resistance, leakage resistance, dust resistance, corrosion resistance, aging resistance, mold resistance, zero resistance.

    Loose parts and insulation corona resistance and other properties.

    Moisture is the most common destructive factor on PCBS. Excessive moisture significantly reduces insulation resistance between conductors, accelerates rapid decomposition, reduces Q values, and corrode conductors. We often see copper uncoated due to its chemical reaction with water vapor and oxygen, so the metal parts of a PCB turn verdigris.

    When printed circuit boards and components may be affected by adverse operating conditions, a tri-paint coating can reduce or eliminate electronic degradation. The purpose of the coating is considered to have been achieved if the coating lasts a satisfactory length of time, e.g. longer than the service life of the product

    Using the technology

    1. Brush - widely used to produce excellent coating effects on smooth surfaces.

    2. Spray - Spray can products can be easily used for maintenance and small-scale production. Spray guns are suitable for mass production.

    3. Automatic dip - Dip ensures a complete finish and does not cause material waste due to overspraying.

    4. Selective coating - Accurate coating, no waste of materials, suitable for a large number of coating, but high requirements for coating equipment. Ideal for large amounts of mulch. Use the compiled XY table to reduce masks. Many connectors do not need to be painted when PCB is painted. The adhesive paper is too slow and there is too much glue left when it is torn. According to the shape, size and position of the connector, a combination cover can be made to match the location of the mounting hole. Cover areas that do not need painting.