Material Analysis
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POM copolymer and homopolymer selection
Problembeschreibung
Homopolymer POM products have a narrow processing window and degrade frequently, or copolymer POM parts fail to meet strength requirements
Ursachenanalyse
Homopolymer POM has higher strength, rigidity, and melting point but poor thermal stability and a processing window of only about 10°C; copolymer POM has good thermal stability, good chemical resistance, and a wide processing window of about 50°C but slightly lower mechanical properties
Lösung
①Choose copolymer POM when processing stability is the priority; ②choose homopolymer POM for high strength and high rigidity requirements and strictly control the temperature; ③evaluate copolymer grades for precision long-term heat-resistant parts
Wichtigste Erkenntnis
Copolymer versus homopolymer is the first fork in POM material selection; choose copolymer for process friendliness and homopolymer for performance limits, and the selection determines the process discipline; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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