Material Analysis
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ASA weathering advantage underutilized
Fenómeno del problema
After the customer uses ASA to replace ABS for outdoor parts, aging problems are still reported; investigation finds many surface defects and high internal stress in the product, and the weathering advantage is not realized.
Análisis de la causa
ASA weathering resistance depends on the dual guarantees of material nature and product quality; surface silver streaks, cracks and high internal stress become starting points of photo-aging; processing defects offset the material-level weathering advantage.
Solución
①Standardize drying and temperature processes to eliminate surface defects; ②low-stress process reduces aging-sensitive points; ③full inspection of product surface quality; ④perform xenon lamp aging verification according to actual working conditions.
Conclusión clave
The weathering resistance of ASA is the joint result of good material plus good process; processing defects are acceleration channels for outdoor aging; aging verification should be performed with defect-free good products.
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