Production & Quality
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ASA solvent resistance cracking
Fenómeno do problema
After ASA products contact grease and solvents, surface cracking and swelling occur, parts around the automobile engine compartment fail, and cracks expand after cleaning.
Análise das causas
ASA has limited resistance to solvents and hydrocarbon chemicals (PlastHub explicitly points out); solvent penetration induces environmental stress cracking; areas with high internal stress crack faster and more severely.
Solução
①Perform compatibility verification before material selection for chemical-contact working conditions; ②low-stress molding reduces cracking sensitivity; ③avoid contact with non-compliant cleaning agents during assembly; ④if necessary, switch to chemical-resistant grades or materials.
Conclusão principal
The chemical resistance boundary of ASA must be confirmed at the material selection stage; environmental stress cracking is the product of stress and medium; cleaning agent compliance is often overlooked on site.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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