In the field of plastic processing, silicone oil plays an indispensable role as a multifunctional additive. It has the characteristics of colorless, odorless, non-toxic, high temperature resistance, water resistance, good electrical insulation, and low surface tension. The following are the main applications of silicone oil in plastic processing:
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1. Lubrication and flow modification
Silicone oil can significantly reduce the friction between plastics and processing equipment, improve the flowability and processing efficiency of plastics. For example, in polyethylene processing, adding polyether modified silicone oil can effectively solve the problem of melt fracture, reduce equipment torque, and improve melt flow rate. In addition, silicone oil can also be made into powder or masterbatch particles to further improve the wear resistance and lubricity of plastics.


2. Release agent
Silicone oil has good lubrication and anti sticking properties, making it an ideal release agent. It can make plastic products easier to detach from the mold while maintaining the surface smoothness of the product. This characteristic is particularly important in plastic injection molding and extrusion molding, as it can reduce mold wear and improve production efficiency.


3. Foam homogenizer
In the production of polyurethane foam, silicone oil, as a foam homogenizer, can make the foam holes evenly distributed and prevent foam from collapsing or cracking. It can improve the stability and elasticity of foam by reducing the surface tension of the gas-liquid interface and forming a stable elastic interface facial mask.


4. Flame retardant and synergistic flame retardant
Silicone oil can work synergistically with various flame retardants to improve the flame retardancy of plastics. For example, mixing silicone oil with flame retardants such as aluminum hydroxide can form a carbon layer, prevent flame propagation, and reduce smoke generation.


5. Surface modification
Silicone oil can migrate to the surface of plastic, forming a protective film that improves the surface lubricity, wear resistance, and glossiness of the product. This feature not only improves the appearance of plastic, but also enhances its scratch and corrosion resistance.


6. Dispersion improvement
Silicone oil can improve the dispersibility of inorganic fillers in resins, ensure uniform mixing, and thus enhance the overall performance of plastic products.


7. High temperature resistance and weather resistance
The addition of silicone oil can significantly improve the high temperature resistance of plastics, making them less prone to deformation or decomposition in high-temperature environments. In addition, it can also enhance the weather resistance and anti-aging properties of plastics.
In summary, silicone oil not only improves processing efficiency in plastic processing, but also significantly improves the performance and quality of plastic products, making it an indispensable high-performance additive in the modern plastic industry.