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In recent years, the market has developed rapidly and all aspects of life have improved. Circuit boards are mainly used for mass production of fixed circuits and optimization of electrical appliances. So do you know what are the performance characteristics of circuit boards? How is the working principle formed? Let's take a closer look at "about the performance advantages and operating methods of the circuit board".
[How does PCB ultrapure water equipment work and what are its advantages]
PCB ultrapure water equipment is a traditional water treatment process in which various anions and cations in the water are replaced by anion and cation exchange resins. The anion and cation exchange resins can be matched in different proportions to form an ion exchange cation bed system. Anion bed system and ion exchange mixed bed (multi-bed) system, and mixed-bed (multi-bed) system is usually used after reverse osmosis and other water treatment processes to produce ultra-pure water.
The terminal process of high-purity water is currently an irreplaceable method for preparing ultra-pure water and high-purity water.
Working principle of circuit board ultrapure water equipment
The circuit board ultrapure water equipment passes water through a cation exchange resin (commonly used is a styrene-type strong acid cation exchange resin), the cations in the water are absorbed by the resin, and the cation H+ on the resin is replaced into the water and mixed with the water. The cations constitute the corresponding inorganic acid; the water containing this inorganic acid is then replaced by the anion exchange resin (usually styrene-type strong basic anion) OH- into the water, and combines with the H+ in the water to form water. Ionized water.
Deionized water has a very wide range of uses in modern industries. The use of deionized water is one of the important means for many industries in China to improve product quality and catch up with the world's advanced level.
The electrical conductivity of the circuit board ultrapure water equipment can be lower than 1uS/cm, and the electrical resistivity of the effluent can reach more than 1MΩ.cm. According to different water quality and usage requirements, the electrical resistivity of the effluent can be controlled between 1~18MΩ.cm. It is widely used in the preparation of industrial ultra-pure water and high-purity water such as electronics, electric power ultrapure water, chemical industry, electroplating ultrapure water, boiler make-up water and ultrapure water for medicine.
Advantages of ultrapure water equipment for circuit boards
Ultra-pure water equipment for circuit boards can achieve artificial control of the number of ions in deionized water, so that its resistivity, solubility, corrosivity, viruses and bacteria and other physical, chemical and pathological indicators are well controlled.
In the electronic industry production and laboratory experiments, if deionized water is used in the process involving the use of water, the application of ultrapure water equipment for circuit boards can bring many parameters closer to the design or ideal data, and the quality of PCB products It will become easy to control.
[Using requirements and equipment characteristics of circuit board ultrapure water equipment]
Circuit board ultrapure water equipment is mainly used in the production of aluminum foil for electrolytic capacitors and the cleaning of working parts, the production of electron tubes, the production of kinescopes and cathode ray tubes, and the production of black and white kinescopes and fluorescent screens. The equipment adopts advanced pure water production technology to ensure that the purity of the water produced meets the needs of users for production water.
1. Pure water quality for picture tube and liquid crystal display (empirical data).
2. The quality of pure water for integrated circuits.
3. National electronic grade pure water standard.
4. American SEMI standard.
Features of PCB ultrapure water equipment
In order to meet the needs of users, achieve the water quality that meets the standards, reduce pollution at all levels as much as possible, the service life of the equipment, and reduce the maintenance workload of the operators. In the process design, take the water that meets the national tap water standard as the source water, and then It is equipped with media filter, activated carbon filter, sodium ion softener, precision filter and other pretreatment systems, RO reverse osmosis host system, ion exchange mixed bed (EDI electric desalination system) system, etc.
In the circuit board ultrapure water equipment system, the water tank is equipped with a liquid level control system, the water pump is equipped with a pressure protection device, an online water quality detection control instrument, and the electric uses a PLC programmable controller, which is truly unattended, and at the same time selects materials in the process The above adopts the method of unifying recommendations and customer requirements, so that the equipment has a higher cost performance and equipment reliability compared with other similar products.
