PCB Technical - What are the protective effects of three anti-paints on PCBA

What are the protective effects of three anti-paints on PCBA processing circuit boards
At present, the country has higher and higher requirements for environmental protection and greater efforts in link governance. This is a challenge but also an opportunity for PCB factories. If PCB factories are determined to solve the problem of environmental pollution, then FPC flexible circuit board products can be at the forefront of the market, and PCB factories can get opportunities for further development.
The Internet era has broken the traditional marketing model, and a large number of resources have been gathered together to the greatest extent through the Internet, which has also accelerated the development speed of FPC flexible circuit boards, and then as the development speed accelerates, environmental problems will continue to appear in PCB factories. In front of him. However, with the development of the Internet, environmental protection and environmental informatization have also been developed by leaps and bounds. Environmental information data centers and green electronic procurement are gradually being applied to the actual production and operation fields.
Three-proof paint is also called PCBA processing electronic circuit board moisture-proof oil, covering oil, moisture-proof paint, three-proof paint, waterproof glue, anti-corrosion paint, salt spray paint, dust-proof paint, protective paint, covering paint, three-proof glue Etc. PCBA circuit boards that have used three-proof paint have the "three-proof" performance of waterproof, moisture-proof, and salt-fog resistance, as well as heat and cold shock resistance, aging resistance, radiation resistance, salt spray resistance, ozone corrosion resistance, vibration resistance, and strong adhesion. And other performance.

Moisture is the most common and destructive main factor to PCB circuit boards. Excessive moisture will greatly reduce the insulation resistance between conductors, accelerate high-speed decomposition, reduce the Q value, and corrode the conductors. We often see the patina on the metal part of the PCB circuit board.

Hundreds of pollutants randomly found on printed circuit boards have the same destructive power. They can cause the same results as moisture corrosion-electronic decay, corrosion of conductors and even irreparable short circuits. The most common pollutants found in electrical systems may be chemicals left over from the manufacturing process. Examples of these contaminants include fluxes, solvent release agents, metal particles, and marking inks. There are also major pollution groups that are caused by humans carelessly, such as fingerprints, body oils, 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 the three-proof paint on the printed circuit board and components can reduce or eliminate the decline of electronic operation performance when it may be affected by adverse factors in the operating environment. If this coating paint can maintain its effect for a satisfactory period of time, such as longer than the product's service life, it can be deemed to have achieved its coating purpose. PCBA processing
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