Antioxidant 9228: Detailed Functions and Applications

Antioxidant 9228 is a highly effective antioxidant primarily used to protect polymer materials (such as plastics, rubber, and synthetic fibers) from damage caused by thermal oxidation and mechanical degradation.  belonging to the phosphite class of antioxidants. Below are its detailed functions and applications:

Key Functions

1. Thermal Oxidation Resistance:
   • Antioxidant 9228 effectively captures free radicals, preventing thermal oxidation degradation of polymer materials during high-temperature processing or use.
   • Extends the service life of materials, preventing discoloration, embrittlement, and loss of mechanical properties.
2. Processing Stability:
   • Provides thermal stability during polymer processing (e.g., extrusion, injection molding), preventing material degradation at high temperatures.
3. Color Stability:
   • Prevents discoloration of polymer materials due to oxidation during processing and use, maintaining appearance quality.
4. Synergistic Effects:
   • Can be used in combination with primary antioxidants (e.g., phenolic antioxidants) to provide comprehensive antioxidant protection.

Advantages

• High Efficiency: Provides long-term antioxidant protection.
• Processing Stability: Maintains material performance stability during high-temperature processing.
• Color Stability: Prevents material discoloration, maintaining appearance quality.
• Synergistic Effects: Enhances antioxidant effects when used with primary antioxidants.

Usage Recommendations

1. Dosage:
   • Typical dosage is 0.1% to 0.5% of the polymer weight, depending on the application and material type.
2. Processing Temperature:
   • Suitable for conventional processing temperatures but should not exceed its thermal decomposition temperature (usually above 250°C).
3. Combination with Other Additives:
   • Can be used with phenolic antioxidants and other additives for comprehensive protection.