Material Analysis
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AEPDS material cognition insufficient
Problembeschreibung
AEPDS (AES) is mistakenly processed as ordinary ABS, weather resistance and low temperature advantages not utilized, process parameters not matched.
Ursachenanalyse
AEPDS is an acrylonitrile-EPDM-styrene copolymer, using EPDM rubber to replace the butadiene rubber of ABS; EPDM has no double bonds and excellent weather resistance; but processing characteristics differ from ABS; insufficient cognition leads to process errors.
Lösung
①Clarify the material is AEPDS rather than ABS; ②adjust process according to EPDM rubber characteristics; ③confirm with supplier technical documents; ④training comparing with ABS process.
Wichtigste Erkenntnis
The rubber phase difference between AEPDS and ABS is the material essence; correct cognition is the premise of processing; supplier documents are the authoritative basis.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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