1. Polyurethane
Spandex fibers, polyurethane elastomers, coatings
Prevents thermal oxidative degradation and yellowing during processing and use, making it a key additive in the spandex industry.

2. Polyolefins
Polypropylene (PP), High-density polyethylene (HDPE) Provides long-term thermal stability, especially preventing material aging under high-temperature processing or use conditions.

3. 엔지니어링 플라스틱
Polyamide (PA, including high-temperature nylon), Polyethylene terephthalate (PET), Polyphenylene sulfide (PPS)
Addresses high-temperature processing and long-term heat resistance requirements, preventing yellowing and degradation of mechanical properties.

4. 기타 폴리머
Polyacetal (POM), rubber, ABS resin, etc. Used as a general-purpose antioxidant to improve the oxidation resistance of materials.

🎯 Detailed Explanation of Core Application Scenarios

Applications in Polyurethane (especially Spandex): This is one of the most classic and important application areas for this antioxidant. It is widely used in spandex fibers, effectively preventing yellowing and powdering caused by heat and nitrogen oxides (NOx) gases during spinning, post-processing, and long-term use, maintaining the aesthetics and performance of the products. Major domestic spandex companies all use it.

Applications in Polyolefins and Engineering Plastics: Due to its excellent thermal stability, it can meet the processing and use requirements of materials under high-temperature conditions. For example, in polypropylene (PP) or nylon (PA), it can prevent material degradation during high-temperature processes such as injection molding. Experimental data shows that its thermal weight loss rate at 350°C is far lower than many traditional antioxidants, demonstrating outstanding performance.

시너지 효과: A significant feature of this antioxidant is its excellent synergistic effect with thioether-type auxiliary antioxidants (such as DSTDP). When used in combination, they provide superior long-term thermal stability compared to using either one alone.