Antioxidant masterbatch is a specialized additive used in the plastics industry to protect plastic materials from degradation caused by oxidation. It helps extend the lifespan and maintain the physical properties of plastic products by inhibiting or retarding the oxidation process.
| Appearance | Granule/Pellets |
|---|---|
| Color | Natural |
| Carrier Resin | PE |
| Active Ingredients | ≈ 10 % Anti oxidant agent |
| Thermal Stabilizer | Yes |
| Melf Flow Index | 1.15 gr/10min. (@ 190 °C ,2.16 kg) |
| Specific Density | ≈ 0.91 gr/cm3 |
| Appearance | Granule/Pellets |
|---|---|
| Color | Natural |
| Carrier Resin | PP |
| Active Ingredients | ≈ 10 % Anti oxidant agent |
| Thermal Stabilizer | Yes |
| Melf Flow Index | 5.6 gr/10min. (@ 190 °C ,2.16 kg) |
| Specific Density | ≈ 0.89 gr/cm3 |
ntioxidant masterbatch is composed of active antioxidant compounds dispersed in a carrier resin that is compatible with the plastic being processed. The carrier resin ensures proper dispersion of the antioxidant throughout the plastic matrix.
Antioxidants work by scavenging and neutralizing free radicals, which are highly reactive molecules generated during the oxidation process. Free radicals can cause chain reactions that lead to polymer degradation, resulting in a loss of physical properties, discoloration, surface cracking, and changes in viscosity. Antioxidants interrupt these chain reactions by donating hydrogen atoms or electrons to the free radicals, thereby stabilizing the polymer and preventing further degradation.
There are various types of antioxidants used in masterbatch formulations, including primary antioxidants, secondary antioxidants, and synergistic blends. Primary antioxidants act as radical scavengers, while secondary antioxidants inhibit the breakdown of polymer chains. Synergistic blends combine multiple antioxidants to provide enhanced protection against oxidation.
The concentration of antioxidant masterbatch required depends on factors such as the specific plastic material, processing conditions, and the desired level of protection. It is crucial to determine the appropriate concentration through testing to achieve optimal antioxidant performance without negatively impacting other properties of the plastic.
Antioxidant masterbatch should be compatible with the base plastic material to ensure effective dispersion and stability. Compatibility testing is necessary to assess the performance and compatibility of the masterbatch in the specific plastic matrix.
Antioxidant masterbatch is typically added to the plastic resin during the compounding or extrusion process. The masterbatch is mixed thoroughly with the base resin to achieve uniform distribution of the antioxidant throughout the final product.
When selecting an antioxidant masterbatch, it is important to consider factors such as the anticipated processing conditions, end-use environment, and the specific type of degradation that needs to be prevented. Different antioxidants have varying effectiveness under different conditions, and their selection should be based on the specific requirements of the application.
The information provided herein is based on our current knowledge and is intended to offer general guidance on products and their applications. It should not be construed as a guarantee of specific product properties or their suitability for a particular purpose. Due to the wide variability of conditions in product usage, which are beyond MKEY's control, users must independently assess whether MKEY products are suitable for their intended applications prior to use.
The quality of our products is warranted in accordance with our General Terms and Conditions of Sale, which are currently in effect or may be updated in the future. Technical information, test data, and advice provided by MKEY personnel are based on our best knowledge and reliable tests. However, it is assumed that recipients of such information possess the necessary expertise and technical skills to analyze test methods and conditions, as well as handle and utilize raw polymers and related compounding ingredients effectively.
