Material Analysis
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Modified cellulose acetate butyrate weather resistance not up to standard
Fenómeno del problema
Modified cellulose acetate butyrate weather resistance not up to standard, yellowing, embrittlement, or significant performance decline after outdoor use
Análisis de la causa
No UV absorber added or addition amount insufficient
Antioxidant system incomplete
Poor compatibility between UV absorber and cellulose acetate butyrate
Antioxidant consumed and degraded during processing
Unreasonable formulation design
Solución
Add an appropriate amount of UV absorber (0.2-0.5%)
Improve the antioxidant system, primary/secondary antioxidant combination
Select UV absorbers with good compatibility
Avoid high-temperature degradation of antioxidants during processing
Optimize formulation design
Conclusión clave
Weather resistance needs to be addressed from UV absorbers and antioxidants
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