With the advancement and development of the technological era, especially in the electronics industry, there are more and more products with increasingly powerful functions and higher requirements. As long as it is an electronic product, there will be a circuit board inside to control the entire device, and the circuit board is also integrated from various different materials.

jiangmen single and double-sided circuit boardWhy spray three proof paint?

Moisture is the most common and destructive primary factor for PCB circuit boards. Excessive moisture can significantly reduce the insulation resistance between conductors, accelerate high-speed differentiation, decrease Q value, and corrode conductors. We often see copper green on the metal parts of PCB circuit boards, which is caused by the chemical reaction between uncoated copper metal and water vapor and oxygen.

And hundreds of pollutants found randomly 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 commonly found pollutants in electrical systems may be chemical residues left over from the manufacturing process. Examples of these pollutants include fluxes, solvent release agents, metal particles, and marking inks. There are also primary pollutants that are accidentally formed during human handling, such as human oil, fingerprints, cosmetics, and food residues. There are also many pollutants in the operating environment, such as salt spray, sand, fuel, acid, and other corrosive vapors and molds.

Coating three proof paint on printed circuit boards and components can reduce or eliminate the deterioration of electronic operation functions when they may be affected by adverse factors in the operating environment. If this coating can maintain its function for a satisfactory period of time, such as exceeding the product's service life, it can be considered as having achieved its coating intention.

Even if the coating layer is very thin, it can still withstand mechanical vibrations, swings, thermal shocks, and operations at high temperatures to a certain extent. Of course, the idea that thin films can be used to provide mechanical strength or insulation properties to individual components inserted into printed circuit boards is incorrect. Components must be securely inserted using mechanical methods and must have their own suitable sealant to provide double protection against accidents.

Article sourced from Jiangmen single and double-sided circuit boardhttp://www.yonghongpcb.com