Description
UV Absorber 384-2: Detailed Functions and Applications
UV Absorber 384-2 is a highly effective ultraviolet absorber primarily used to protect polymer materials (such as plastics, coatings, and rubber) from damage caused by ultraviolet (UV) radiation. Its chemical name is 2-Hydroxy-4-n-octoxybenzophenone, belonging to the benzophenone class of UV absorbers. Below are its detailed functions and applications:
Usage Recommendations
- Dosage:
- Typical dosage is 0.1% to 0.5% of the polymer weight, depending on the application and material type.
- Processing Temperature:
- Suitable for conventional processing temperatures but should not exceed its thermal decomposition temperature (usually above 250°C).
- Combination with Other Additives:
- Can be used with light stabilizers (e.g., HALS) and antioxidants for comprehensive protection.
Key Functions
- UV Degradation Resistance:
- UV Absorber 384-2 effectively absorbs ultraviolet light (especially UV-A and UV-B bands), preventing photodegradation and photo-oxidation of polymer materials caused by UV radiation.
- Extends the service life of materials, preventing discoloration, embrittlement, and loss of mechanical properties.
- Light Stability:
- Converts absorbed UV energy into harmless heat, reducing UV-induced damage to materials.
- Thermal Stability:
- Maintains stable performance even under high-temperature conditions, making it suitable for applications requiring heat resistance.
- Low Volatility:
- Exhibits low volatility, making it suitable for high-temperature processing and long-term use.
- Synergistic Effects:
- Can be used in combination with light stabilizers (e.g., HALS) and antioxidants to provide comprehensive light and thermal stabilization.
Advantages
- High Efficiency: Provides long-term UV protection.
- Compatibility: Compatible with various polymers and additives.
- Eco-Friendliness: Low toxicity, meets environmental requirements.
- Heat Resistance: Stable performance under high temperatures.
- Low Volatility: Suitable for high-temperature processing and long-term use.
Precautions
- Store in a cool, dry place away from high temperatures and moisture.
- Use protective equipment to avoid direct contact with skin and eyes.
UV Absorber 384-2 is a versatile UV absorber that significantly enhances the weatherability and service life of materials, making it widely used in industries requiring UV protection.
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