Three proof adhesive, also known as circuit board protective adhesive or coating adhesive, is an organic silicon modified resin used to protect circuit boards and related equipment from harsh environmental erosion, thereby improving and extending the service life of products, ensuring safety and reliability during use.
The three proof adhesive is applied to the surface of the circuit board, forming a thin film that is both light and flexible, with a thickness of only 40-60 microns. It can protect circuits from damage in situations such as chemical substances (such as fuel, coolant, etc.), vibration, moisture, salt spray, humidity, and high temperature. Under these conditions, the circuit board may be corroded, mold may grow, and short circuits may occur, leading to faults in circuits that do not use the three protection adhesive. The protective film formed by the three proof adhesive can effectively isolate and protect the circuit from the erosion of chemicals, moisture, and other pollutants, thereby improving the reliability of the circuit board, increasing its safety factor, and ensuring its service life.
Organic silicon three proof adhesive is a single component, low viscosity organic silicon resin. Easy to use, can be applied by brush or dip coating, and has good adhesion to various circuit boards. Has good temperature resistance and maintains good cold and hot aging performance within the range of (-60 ℃ -200 ℃); After curing, it forms a transparent, elastic, and glossy protective film, which has superior dielectric, waterproof, seismic, weather resistance, pollution resistance, UV resistance, and moisture-proof insulation properties.
The three proof adhesive has outstanding "moisture-proof", "anti salt spray", and "insulation" properties; The membrane layer still maintains its good dielectric performance in humid environments; It has strong oxidation resistance, aging resistance, and can withstand the corrosion of various acids, alkalis, and salts of different concentrations. It can be cured at room temperature or low temperature. The film is compact, bright, non cracking, and decorative.