1. Vulcanization, chlorination, bromination
The silver-plated layer on the 50ft led light strips bracket will generate silver sulfide if it touches sulfur-containing gas, and touches acidic nitrogen-containing chlorine and bromine gas will generate light-sensitive silver halide, which will cause the light source to blacken and fail. Light source sulfur/chlorine /Bromination may occur in every link of the production, storage, aging, and application of LED light sources and lamps. After the darkening of the light source is diagnosed as sulfur/chlorine/bromination, the customer should select a detailed sulfur discharge plan based on the stage of sulfur/chlorine/bromination.
In a high temperature and high humidity environment, silver will easily react with oxygen to produce black silver oxide. After Xinqin Lighting confirms that the blackening of the light source is caused by the oxidation of the silver-plated layer, it will advise customers to further check the airtightness of the light source and lamps to eliminate the path of moisture penetration.
In terms of experience, the material shortcomings of the six raw materials of 50ft led light strips (chips, brackets, die-bonding glue, bonding wires, phosphors, packaging glue) and the three major packaging processes (die-fixing, wire bonding, potting) The disadvantages of the process may cause the light source to generate extremely high temperatures, resulting in partial or overall blackening of the light source, and carbonization of the light source.
4. Chemical incompatibility
The blackening of LED light sources may also be caused by chemical pollution. This blackening phenomenon often occurs in sealed lamps with little or no air activity. When Xinqin Lighting confirms that the blackening of the light source is caused by a chemical compatibility problem, it will advise customers to check the chemical incompatibility of the materials used in the lamps to find out theffrequentlythat are incompatible with the light source. frequently encountered problems. However, the blackening of the light source is only a manifestation. Reasons such as vulcanization, chlorination, bromination, oxidation, carbonization, and chemical incompatibility will cause the blackening of the LED light source.