The role of the three anti-adhesive
Three anti-adhesive is a specially formulated coatings for the maintenance of circuit boards and their related equipment from the erosion of the bad, thereby improving and extending its service life, to ensure that the use of the peace of mind and reliability. Usually use and storage conditions, such as chemical, vibration, high dust, salt spray, humidity and high temperature environment, circuit boards may corrosion, softening, deformation, mold and other problems, resulting in circuit board circuit failure.
Three-proof adhesive coated on the board's exterior, forming a layer of three-proof maintenance film (three-proof refers to the moisture, salt spray, mold) can be such as containing chemicals (eg: fuel, coolant, etc.) vibration, moisture, salt spray, humidity and high temperature conditions to protect the circuitry from damage. These conditions may be corroded circuit boards, mold growth and short-circuiting, etc., without the use of three anti-adhesive circuit failure, thereby improving the reliability of the circuit board to increase its safety factor, and to ensure its service life. In addition, because the three-proof adhesive prevents leakage, it allows for higher power and closer print board spacing, which can meet the purpose of component miniaturization.
Three-proof adhesive use
1, civil and commercial use: washing machines, dishwashers, bathroom products, air conditioners, desiccant, computers, anti-theft, fire alarm devices, and so on.
2, the automotive industry: the use of three-proof adhesive can ensure that the basic requirements of automotive electronic devices or get long-term reliability.
3, aerospace: due to the special nature of the environment, aerospace on electronic equipment requirements are particularly stringent, in order to be able to maintain good circuit performance, so the three anti-adhesive pressure stability is widely used.
4, nautical: saltwater in the salt content of the components of the ship's equipment will cause harm to the electrical circuits, the use of three when the period can be in the maximum protection of equipment on the water surface and underwater equipment.
5, medical: three anti-glue can also protect electronic equipment from chemical erosion, to ensure the continued stability of electronic equipment.
The characteristics of three-proof adhesive
Three-proof adhesive is a single-component, low-viscosity silicone resin. Easy to use, can be brushed or dip-coated construction, good adhesion to a variety of circuit boards. Has good temperature resistance in the (-60 ℃ -200 ℃) range of hot and cold aging performance to maintain good; its curing to form a layer of transparent, elastic, glossy protective film: has a superior dielectric properties, water resistance, vibration resistance, weather resistance, pollution resistance, UV resistance, as well as moisture insulation and other properties.
Three-proof adhesive has outstanding "moisture", "salt spray", "insulation" performance; in a humid environment, the film layer still does not lose its good dielectric properties; strong resistance to oxidation, aging resistance, and can be used to protect the skin. Oxidation, aging resistance, can withstand a variety of different concentrations of acid, alkali, salt corrosion, curing at room temperature or low temperature, the film layer is dense and bright, not cracked, and decorative.