PCBA Tech - Use of waterproof and moisture-proof coating on PCBA circuit board

Use of waterproof and moisture-proof coating on PCBA circuit board
PCBA circuit board waterproof and moisture-proof coating has a wide range of optical properties. Nano-material coating can improve the corrosion resistance of the substrate and achieve the purpose of surface modification and decoration. Adding nanoparticles to paint or coatings can further improve its protective ability, and can withstand the atmosphere and ultraviolet rays, so as to achieve the effects of anti-degradation and anti-tarnishing; in addition, it can also be used in building materials such as sanitary ware, indoor spaces, utensils, etc. Nano material coating, used to produce sterilization and cleaning effects.

Among them, PCBA circuit boards are waterproof, moisture-proof, and corrosion-resistant. After all, the relatively weak part of electronic products is PCBA. Once water vapor or corrosive fluid penetrates into the PCBA, it will cause short circuit or corrosion of the component pins, leading to the production of electronic products. The function of PCBA is affected or even destroyed. The waterproof, moisture-proof, and anti-corrosion methods of PCBA are usually structure protection from outside to inside + potted plant protection + PCBA functional coating protection.

PCBA nano moisture-proof coating
Circuit board nano waterproof and moisture-proof coating is a new type of nano material, also known as nano coating. It is an ideal substitute for the current three-proof paint. The thickness is only 2-4 microns, invisible to the naked eye, and a pole is formed on the surface of the PCB. The thin net effectively reduces the surface energy of the printed circuit board, forming a lotus leaf effect, has good heat dissipation performance, does not affect the conductivity of the normal connector, and is waterproof to IPx5, which basically meets the waterproof standard of life, and it can also Resistant to corrosion, acid and alkali.

At present, this coating technology has been used to prevent sweat of high-end sports headphones. Nano coating operation is very simple. Directly soak the circuit board in the nano waterproof liquid for a few seconds, take it out and let it dry naturally for 5 minutes. Easy to maintain. Environmental protection standards.
In the process of coating waterproof, moisture-proof and anti-corrosion on PCBA, according to the characteristics of the material, it can be divided into three kinds of waterproof coatings: spraying, dipping and brushing
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