Material Drying
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ABAK impact strength improvement
Problem Phenomenon
ABAK utilizes ABS to improve the low-temperature and dry-state impact strength of PA, but an improper ratio actually reduces it.
Cause Analysis
PA has low dry-state and low-temperature impact strength; the ABS butadiene rubber phase provides toughness; however, as ABS dosage increases, yield strength and impact strength actually decrease while elongation at break increases; the improvement is limited when the compatibilizer is insufficient.
Solution
①Optimize the ABS ratio (usually 30~50%); ②add sufficient compatibilizer; ③balance strength and toughness according to the application; ④verify with low-temperature impact tests.
Key Takeaway
ABAK impact strength improvement depends on ratio and compatibilizer optimization; more ABS is not always better; testing verifies the actual improvement effect.; After confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence
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