What should I do if the silicone protective cover turns yellow? What is the principle?

Silicone protective covers may turn yellow during prolonged use or storage. This is due to the natural changes caused by the characteristics of silicone and environmental factors. The following are some common reasons that may cause silicone protective sleeves to turn yellow:
1. Oxidation: Silicone may oxidize when in contact with air, leading to yellowing. Oxidation is usually caused by prolonged exposure to air, especially under the action of light and heat.
2. UV radiation: UV radiation is another factor that causes silicone to turn yellow. Long term ultraviolet radiation can cause the breakage and color change of silicone molecular chains.
3. Usage environment: Silicone protective sleeves are exposed to environments containing pollutants, chemicals, or gases, which may react with silicone and cause yellowing.
4. Storage conditions: Improper storage conditions, such as high temperature, humidity, or prolonged exposure to light, may also cause the silicone protective cover to turn yellow.
Although yellowing is a natural part of silicone protective covers, you can try the following methods to reduce or prevent yellowing:
1. Cleaning: Regularly clean the silicone protective cover, use mild soapy water or specialized silicone cleaner, and gently wipe off surface stains and dirt.
2. Avoid exposure: Minimize prolonged exposure of silicone protective sleeves to ultraviolet radiation. Store them in a dark place or use UV resistant materials for protection.
3. Proper storage: When storing silicone protective covers, choose a dry, ventilated, and avoid high temperature and humidity environment to reduce the risk of oxidation and color changes.
4. Use protective coatings: Some special silicone protective sleeves can use specialized protective coatings or spray agents to provide additional protective layers to slow down the yellowing and color changes process.
Please note that the above methods can help reduce the degree of yellowing of silicone protective sleeves, but they cannot completely eliminate or prevent yellowing. If yellowing has a significant impact on appearance and function, you may need to consider replacing the silicone protective cover.