Material Analysis
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Weather Resistance of Modified polyamide 46 (high-temperature nylon) Not Up to Standard
Fenómeno del problema
The weather resistance of modified polyamide 46 (high-temperature nylon) is not up to standard, with yellowing, embrittlement, or significant performance decline after outdoor use
Análisis de la causa
No ultraviolet absorber is added or the amount added is insufficient
The antioxidant system is imperfect
The compatibility between the ultraviolet absorber and polyamide 46 (high-temperature nylon) is poor
The antioxidant is consumed and degraded during processing
The formulation design is unreasonable
Solución
Add an appropriate amount of ultraviolet absorber (0.2-0.5%)
Improve the antioxidant system with primary/secondary antioxidant coordination
Select a UV absorber with good compatibility
Avoid high-temperature degradation of the antioxidant during processing
Optimize the formulation design
Conclusión clave
Weather resistance needs to be addressed from the UV absorber and antioxidant
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