Three-proof paint according to each region and each manufacturer to use the requirements and focus on the surface there are a variety of names, such as three-proof adhesive, moisture-proof adhesive, insulating adhesive, moisture-resistant paint, protective paint, protective paint, Phi compound adhesive, coating compound adhesive, waterproof adhesive, moisture-resistant oil, three-proof oil, three-proof agent, protective agent, moisture-proof agent, conformal coating, laying-type coatings, ***formal coating, **** sex coating compound, the English name is Conformal Coating. Conformal Coating, three-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.
In real conditions, such as chemical, vibration, high dust, salt spray, humidity and high temperature environments, circuit boards may corrode, soften, deform, mildew and other problems, resulting in circuit board circuit failures. Three-proof paint is applied to the surface of the circuit board to form a three-proof protective film (three-proof means moisture-proof, salt spray-proof and mold-proof). In situations such as chemical substances (e.g., fuel, coolant, etc.), vibration, moisture, salt spray, humidity, and high temperatures, circuit boards that do not use triple-proof lacquer may be corroded, mold growth, and short-circuiting, resulting in circuit failures. The use of triple-proof lacquers protects the circuits from damage, which improves the board's reliability, increases its safety factor, and ensures its longevity. In addition, because the three-proof paint prevents leakage, it allows for higher power and closer board spacing. Thus, the purpose of component miniaturization can be met.
Three-proof paint types
Three-proof paint is also known as PCB electronic circuit board protection oil, Phi Repeat oil, moisture-proof paint, three-proof paint, waterproof adhesive, insulating varnish, corrosion-resistant paint, anti-salt spray paint, anti-dust paint, protective paint, Phi Repeat paint, three-proof adhesive, etc., which is categorized as follows:
Three-proof paint can be divided into three-proof paint from the chemical composition of the acrylic ester, silicone, polyurethane paint; and from the curing In terms of curing mode, there are solvent curing, room temperature curing, heat curing and ultraviolet curing.
1, solvent-containing acrylic resin three-proof paint (the current market is the most widely used, popular products)
Characteristics: surface drying, fast curing time, better three-proof, inexpensive, transparent color, flexible texture, with easy to repair features.
2, solvent-free acrylic resin three-proof paint
Features: UV curing, can be in a few seconds to more than a dozen seconds table drying, transparent color, hard texture, anti-chemical corrosion and abrasion resistance is also very good.
3, polyurethane three-proof paint
Features: brittle texture, excellent solvent resistance. In addition to superior moisture resistance, and stable performance in low-temperature environments.
4, silicone three-proof paint
Soft elastic coating material, can be a good release of pressure, high temperature resistance of 200 degrees, easy to repair.
Alternatively: from the price and performance considerations, there is the emergence of the above types of three-proof paint will appear cross phenomenon occurs, such as silicone-modified three-proof paint.
5, fluorescent three-proof paint
Features: coated with fluorescent three-proof paint, violet light irradiation of the coated surface shows blue, clear, easy to detect whether the three-proof paint is coated in place.
Three, three-proof paint applications
Three-proof paint is also known as PCB electronic circuit board protection oil, phi oil, waterproof adhesive, insulating varnish, moisture-proof paint, three-proof paint, corrosion-resistant paint, anti-salt spray paint, dust-proof paint, paint protection, phi paint, three-proof adhesive, etc., the use of the three-proof paint PCB circuit boards have a waterproof, moisture-proof, dust-proof, "three-proof" performance and resistance to heat and cold, "three-proof" performance. "performance and resistance to thermal shock, aging, radiation, salt spray, ozone corrosion resistance, vibration resistance, good flexibility, strong adhesion and other properties, therefore, the application is very wide.
Initially, the three-proof paint is only used in the high-tech field of printed circuit boards. As electronic devices are more and more widely used in daily life, so now consumers are also more and more concerned about the quality and reliability of the product, the use of three-proof paint **** sexual lamination can enable manufacturers to effectively improve product quality, reduce the cost of expensive warranty failure.
Typical applications include the following:
1. Residential and commercial applications
Three-protection paints (**** sex laminating film) can provide protection for electronic circuits in household appliances so that they can withstand:
(1) water and detergents (washing machines, dishwashers, sanitary ware, outdoor electronic LED screens)
(2) external unfavorable environment (display, anti-theft, fire alarm devices, etc.)
(3) chemical environment (air conditioners, dryers)
(4) office and home hazards (computers, induction cookers)
(5) all other circuit boards needing triple-proof protection
2, automotive industry
Automotive industry requires triple-proof paint to protect circuits From the hazards of several situations, such as: gasoline evaporates, salt spray / brake fluid. The use of electronic systems in automobiles continues to grow rapidly, so the use of three-proof paint has become a basic requirement to ensure that automotive electronics to obtain long-term reliability.
3, aerospace
Because of the specificity of the use of the environment, aviation, aerospace environment on the electronic equipment requirements are stringent, especially in the rapid pressurization, depressurization conditions, but still to maintain good circuit performance. Three-proof paint pressure stability is therefore widely used.
4, nautical
Both fresh fresh water and salty seawater, will cause harm to the electrical circuits of marine equipment. The use of three-proof paint can maximize the protection of the water and even submerged and underwater equipment.
5, medical
Three-proof paint can protect electronic equipment from external chemicals and special use of environmental erosion, to ensure its continued stability.