Advantages of three anti paint protection pcb board
Time:2023-10-16
With the continuous upgrading of electronic circuit boards, the application of three proofing paint is becoming more and more widespread. Next, let's talk about the advantages of three proofing paint on PDB circuit boards.
Three proofing paint, also known as PCB electronic circuit board moisture-proof oil, covering oil, moisture-proof paint, three proofing paint, waterproof glue, insulation paint, anti-corrosion paint, salt spray paint, dustproof paint, protective paint, covering paint, three proofing glue, etc. PCB circuit boards that have been used with three proofing paint have the "three proofing" properties of waterproof, moisture-proof, and dustproof, as well as cold and hot impact resistance, aging resistance, radiation resistance, salt spray resistance, ozone corrosion resistance, vibration resistance, good flexibility, and strong adhesion.
Moisture is the most common and destructive factor affecting PCB circuit boards. Excessive moisture can significantly reduce the insulation resistance between conductors, accelerate high-speed decomposition, reduce Q values, and corrode conductors. We often see copper green on the metal part of PCB circuit boards, which is caused by the chemical reaction of copper, water vapor, and oxygen without coating with three anti paint.
The hundreds of pollutants found on printed circuit boards have the same destructive power. They can lead to the same results as moisture erosion - electronic decay, corrosion of conductors, and even irreversible short circuits. The most common pollutants found in electrical systems may be residual chemicals from the manufacturing process. These pollutants include, for example, fluxes, solvent release agents, metal particles, and marking inks. There are also major pollution groups caused by human carelessness during handling, such as fingerprints, body oils, cosmetics, and food residue. There are also many pollutants in the operating environment, such as salt spray, sand, fuel, acid, and other corrosive vapors and molds.
Applying three proofing paint to printed circuit boards and components can reduce or eliminate the degradation of electronic operating performance when it may be affected by adverse operating environment factors. If this coating paint can maintain its effectiveness for a satisfactory period of time, such as exceeding the product's service life, it can be considered as having achieved its coating purpose.
Even if the covering layer is very thin, it can withstand mechanical vibration, oscillation, thermal shock, and operation at high temperatures to a certain extent. Of course, the idea that thin films can be used to provide mechanical strength or sufficient insulation for various parts inserted into printed circuit boards is incorrect. The components must be mechanically inserted and equipped with their own suitable sealing agent, in order to have dual safety measures to prevent accidents. This is the mission of the three proofing paint for PCB circuit boards.
