Silicone ProductsDiscoloration: Discoloration is a natural characteristic of most silicone products. If a product is used for an extended period, it may turn yellow due to environmental changes. However, by adding yellowing agents, a yellowing or edible effect can be achieved. Silicone raw materials and ingredients are obtained through the vapor phase method. The main material is made of high-quality silicone, which boasts high transparency and tensile strength and does not turn yellow. Therefore, the silicone you purchase is a standard variety, and no yellowing agents are added to make the product yellow.
Currently, the main raw materials used by silicone manufacturers are synthetic rubber and natural rubber. Synthetic rubber includes chloroprene, butadiene, styrene butadiene rubber, etc. Its structure is composed of high polymer polymers. Through rotation and extrusion, the rubber can deform under external force and quickly return to its original shape, exhibiting good chemical stability and mechanical properties. It is flexible and can withstand extreme temperatures from -40 to 240°C, making silicone baking trays superior to low-temperature silicone products. In many aspects, we now choose to use silicone instead of rubber.
To meet product specifications, silicone manufacturers require various processes and treatments: some consumers demand that the appearance and performance of silicone products, in addition to the main organosilicon products, must align with the anticipated effects. Consequently, manufacturers with special requirements for external processes (such as sewing, transfer printing, encapsulation, and coating) must be well-versed in all aspects of the technology and processing sequence for producing these types of products, otherwise, certain suppliers may not achieve the desired outcomes.
Solution to Yellowing of Silicone Products:
1. Utilizing high-transparency silicone raw materials.
2. By adding sulfur additives with anti-yellowing properties.
3. We control the mold temperature and vulcanization time of silicone products in the process aspect.
In addition to the aforementioned methods, we can also clean the silicone surface by using toothpaste, cleansers, or alcohol, followed by drying it. It's important to avoid direct sunlight, as it can accelerate the aging and yellowing of silicone products. Overall, the yellowing of transparent silicone products can only be mitigated; it cannot be completely prevented.
Yongle Rubbers & PlasticsThe company has successfully passed the ISO9001 certification. We specialize in manufacturing platinum silicone tubes, peristaltic pump silicone tubes, food molding silicone molding parts and silicone, as well as custom production of sealing components for plastic products. With a competitive strategy focused on "developing better products, providing better services, and creating a better image," we continuously undergo transformation and management innovation to enhance our comprehensive corporate competitiveness.
