Designers and manufacturers of electronic products are under pressure to make the packaging smaller, lighter and more environmentally friendly. They must also ensure that their new technology can operate reliably in their operating environment, which may include exposure to chemicals, humidity, electrostatic environment and extreme temperature. Compared with products without three proofing paint, products with three proofing paint will perform better. Its function is mainly to improve the yield of production and the reliability of products. Especially for the products used in harsh environments, the three proofing paint can be divided into acrylate, silicon cutting and polyurethane from the chemical composition, and from the curing method, there are solvent curing, room temperature curing, thermal curing and UV curing. Typical uses include the following:
1. The three proofing paint (common coating) for civil and commercial applications can provide protection for electronic circuits in household appliances, so that they can resist water and detergent (washing machines, dishwashers, outdoor electronic LED screens of sanitary products); External adverse environment (display screen, anti-theft, fire alarm device, etc.): chemical environment (air conditioner, dryer): harmful substances in office and home (computer, induction cooker); All other three protection circuit boards.
2. In the automotive industry, the automotive industry requires three proofing paints to protect the circuit from the hazards of the following situations, such as gasoline evaporation, salt spray / brake fluid, etc. The application of electronic systems in automobiles is growing rapidly, and the complexity of components is becoming higher and higher, and it is developing towards multi-functional components. The electronic sensors and systems in the compartment basically occupy the same space as the passengers in the car. In winter, this may mean very cold. The moisture in the surrounding air may condense on the car. In summer, the air around the car may be hot and humid. The condensed water and high humidity will cause corrosion, which is a challenge to the reliability of electronic products. So use
Three proofing paint has become the basic requirement to ensure the long-term reliability of automotive electronic devices.
3. Aerospace, due to the particularity of the operating environment, the 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. Therefore, the pressure stability of three proofing paint has been widely used.
4. navigation, whether fresh fresh water or salty sea water, will cause harm to the electrical circuit of ship equipment. The use of three proofing paint can maximize the protection of equipment on the water surface and even submerged and underwater
5. medical treatment, three proofing paint can protect electronic equipment from external chemical agents and special use environment to ensure its continuous stability.
With the improvement of people's living standards, the requirements for daily-use electronic products are becoming higher and higher. More and more attention is paid to the quality and safety of products, and electronic equipment is more and more applied to people's daily life. The safety of electronic equipment is particularly important. Three proofing paints protect the important defense line of electronic equipment. A layer of elastic paint film can be formed after spraying three proofing paint on electronic equipment to protect electronic products from high temperature and wet steam External factors such as moisture and dust. Three proofing paint can also protect electronic products from corrosion like circuit boards Whisker growth and short circuit in electronic system. Generally speaking, it is an insulating layer, which is used to ensure that different components do not have problems, leading to the early failure of the circuit board. At present, the process involved in the three proofing paint has gradually developed to the use of more complex automatic coating process.
