Characteristics of circuit board three anti-paint
2024/01/05
Three anti-paint is a special formula of paint, used to protect the circuit board and its related equipment from bad environment, so as to improve and extend their service life, to ensure the safety and reliability of the use. Under realistic conditions, such as chemical environment (fuel, coolant, etc.), vibration, high dust, salt spray, humidity and high temperature, the circuit board may produce corrosion, softening, deformation, mildew and other problems, resulting in circuit board circuit failure. The three-proof paint is applied to the exterior of the circuit board to form a light and flexible film with a thickness of about 25-50 microns. It can protect the circuit from damage under the above harsh conditions.
First, the characteristics of three anti-paint
1. Three anti-paint one-component, low viscosity resin, this product is simple to operate: suitable for brushing, spraying, dipping, showering and other processes, fast curing speed, good adhesion to various circuit boards.
2. It has good high and low temperature resistance; after curing, it becomes a layer of transparent protective film, which has excellent insulation, moisture-proof, leakage-proof, shockproof, dust-proof, anti-corrosion, anti-salt spray, anti-mildew, anti-aging, corona resistance and other properties.
Two, the role of three anti-paint
The protective film formed by the three-proof paint can effectively isolate the circuit board and protect the circuit from the erosion and damage of the harsh environment, thereby improving the reliability of the circuit board, increasing its safety factor, and ensuring its service life.
2, to achieve higher circuit board integration
In addition, since the three-proof paint can prevent leakage, it allows higher power and closer printed board spacing, so that the purpose of miniaturization of components can be satisfied.
3. Appearance of modified circuit board
Whether transparent or with color three-proof paint, 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.
Three, three anti-paint use
Initially, the three anti-paint was only used in high-tech printed circuit boards. As electronic devices are more and more widely used in daily life, consumers are paying more and more attention to the quality and reliability of products. The use of three-proof paint can enable manufacturers to effectively improve product quality.
Typical uses include the following ranges:
1. Civil and commercial applications
Three-proof paint can provide protection for electronic circuits in household appliances, so that they can resist:
(1) Water and detergent (washer/dishwasher)
(2) high temperature (such as microwave oven)
(3) Chemical substance environment (air conditioner/dryer)
(4) Harmful things in offices and homes (computers)
(5) Adverse external environment (anti-theft alarm device)
2. The automotive industry
The automotive industry requires three anti-paint to protect the circuit from the following situations, such as: gasoline evaporation, salt spray/brake fluid, etc. The application of electronic systems in automobiles is growing rapidly, so the use of three-proof paint has become a basic requirement to ensure the long-term reliability of automotive electronic devices.
3, Aerospace, satellite systems, military control systems, etc.
Due to the particularity of the use environment, the aviation and aerospace environment has strict requirements on electronic equipment, especially under the conditions of rapid pressurization and decompression, it is still necessary to maintain good circuit performance. The pressure stability of the three anti-paint is therefore widely used.
4. Navigation
Whether it is fresh fresh water or salt sea water, it will cause harm to the electrical lines of the ship's equipment. The use of three anti-paint can maximize the protection of water and even immersion and underwater equipment.
5-Medical
Three anti-paint can protect electronic equipment from external chemical agents and special use environment erosion, to ensure its continued stability.
More three anti-paint applications to meet the different needs of customers.
6. LED, inverter, solar energy, etc.
Three anti-paint can protect the LED display, solar cells in the sun oxidation, salt spray corrosion becomes slow, outdoor harsh environment work longer
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