Why can cleaning agents effectively remove grease residues on circuit boards?
Publish Time: 2025-05-12
During the electronic manufacturing and repair process, some grease, rosin and other types of dirt often remain on the circuit board. These residues not only affect the appearance of the circuit board, but more importantly, they may cause electrical performance degradation and even cause short circuits or other failures. Therefore, thorough removal of these residues is essential to ensure the normal operation of the circuit board.The cleaning agent can effectively remove grease residues on the circuit board, mainly relying on the active ingredients in its formula. These active ingredients usually include surfactants, solvents and other additives. Surfactant molecules are hydrophilic (like water) at one end and lipophilic (like grease) at the other end. This amphiphilic nature enables them to form a bridge between water and grease, effectively wrapping up the grease and dispersing it into the water, thereby achieving the purpose of cleaning.The working principle of surfactants is to reduce the surface tension of water, making it easier for water to penetrate under the grease layer. When surfactants come into contact with grease, their lipophilic ends are inserted into the grease, while the hydrophilic ends face the aqueous solution. In this way, the grease is wrapped in tiny micelle structures to form a stable emulsion. In this way, the grease that was originally insoluble in water is dispersed into fine particles suspended in water and can eventually be washed away.In addition to surfactants, efficient cleaning agents also add specific solvents to enhance degreasing capabilities. For example, organic solvents such as alcohols, ketones or halogenated hydrocarbons have good solubility and can quickly dissolve various types of grease and resin. The selection of a suitable solvent depends not only on the type of substance to be removed, but also on the safety and environmental protection requirements of the substrate. Modern cleaning agents tend to use low-toxic, biodegradable solvents to reduce harm to human health and the environment.In order to cope with complex combinations of pollutants, cleaning agents are often carefully formulated to contain a variety of ingredients with different functions. For example, certain additives can improve the wettability and penetration of the cleaning agent, helping it to reach the contaminated area faster; antioxidants help prevent oxidation corrosion of metal parts during the cleaning process. In addition, some high-end products may also add corrosion inhibitors or rust inhibitors to further protect sensitive components from damage.In actual operation, the correct use method is also one of the key factors to ensure the cleaning effect. Whether it is immersion, spraying or ultrasonic cleaning, it is necessary to adjust the cleaning agent concentration, temperature and treatment time according to the specific situation. Proper condition setting can not only improve cleaning efficiency, but also maximize the functional characteristics of the cleaning agent. A well-designed cleaning process combined with a high-quality cleaning agent can effectively remove various stubborn stains on the surface of the circuit board and restore it to its best working condition.In summary, the reason why cleaning agents can efficiently remove grease residues on circuit boards is due to their scientific and reasonable formula design and technical optimization for specific application scenarios. This makes them an indispensable and important tool for maintaining the long-term stable operation of electronic equipment.
