Because LED products have been widely used in outdoor lightings, such as tunnel lights, street lamps, and so on, these products will come into contact with water vapor, acid rain, and other harsh conditions in the process of use, which requires PCB circuit boards and electronic components to be insulated, moisture-proof, leak-proof, shock-proof, dust-proof, anti-corrosion, anti-aging, and other requirements. Waterproof coating on the circuit board surface is mainly used to protect the circuit board and related equipment from environmental erosion, thus improving and prolonging their service life, to ensure the use of safety and reliability. The advantages of silicone potting sealant in the application of electronic components are as follows: elastic can withstand drastic temperature changes, excellent weather resistance, strong adhesion, excellent electrical properties, and other soft elastic coating materials, can release pressure well, high-temperature resistance of 200℃, easy to repair.
