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Triple proof paint is a specially formulated coating used to protect circuit boards and their associated equipment from bad conditions, thereby enhancing and extending their service life and ensuring safety and reliability of use.Under realistic conditions, such as chemical environments (fuels, coolants, etc.), vibration, high dust, salt spray, humidity, and high temperatures, circuit boards can suffer from corrosion, softening,deformation, mold, and other problems that can lead to malfunctions of the board's circuits. Three-proof paint is applied to the exterior of the circuit board to form a light and flexible film about 25-50 microns thick. It protects circuits from damage under the harsh conditions described above.
Advantages of three-proof paint
1, Protection of circuit boards
The protective film formed by the three-proof paint can effectively isolate the circuit board, and can protect the circuit from the erosion of the harsh environment, damage, thereby improving the reliability of the circuit board, increase its safety factor, and ensure its service life.
2, Achieve higher circuit board integration
In addition, because the three-proof paint can prevent leakage, thus allowing higher power and closer spacing of the printed circuit board to meet the purpose of component miniaturization.
3, Modify the appearance of the circuit board
Whether transparent or with the color of the three anti-varnish,can improve the appearance of the printed circuit board, and the latter by covering the components and design layout can also ensure a higher degree of confidentiality.
The "three proofs" of PCB varnish usually refer to waterproofing,moistureproofing and dustproofing. This is a special coating mainly used to protect circuit boards and components from harsh environmental influences, also known as PCB electronic circuit board protection oil, coating oil,waterproof glue,insulating paint,moisture-proof paint,three-proof paint, anti-corrosion paint, anti-salt spray paint, dust-proof paint, paint, coating paint, three-proof adhesive and so on.
Three-proof paint
Three-proof paint can be sprayed or brushed on the PCB to form a protective film, thus preventing moisture, dust, smoke, chemicals and other damage to the circuit board and components. Specifically, its protective effects include:
Waterproof: prevent moisture intrusion into the circuit board to avoid short circuits and corrosion.
Moisture: form a protective film on the surface of the circuit board, effectively isolate the environment from moisture and humidity, to avoid corrosion or short circuit of the circuit board due to moisture.
Dustproof: Prevents dust, dirt or other tiny particles from adhering to the circuit board, ensures the cleanliness of the circuit board, and reduces malfunctions caused by pollution.
In addition, the use of three-proof paint PCB circuit boards also have the characteristics of resistance to cold and thermal shock, aging, radiation, salt spray, ozone corrosion, vibration resistance, good flexibility, strong adhesion and so on. These characteristics make three-proof paint in electronic equipment in a wide range of applications, such as washing machines, dishwashers, sanitary products, outdoor electronic LED screens, displays, anti-theft and fire alarm devices, air conditioners, dryers and so on.
From the chemical composition, PCB three-proof paint mainly includes acrylic resin, fluorocarbon resin and other components, which work in synergy to make the three-proof paint has excellent moisture-proof, dust-proof, corrosion-resistant and other properties.At the same time,modern PCB three-proof paint in the selection of components is increasingly focusing on environmental protection, the use of solvents in line with environmental standards,to reduce the harm to the environment and human body.