Material Analysis
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POM product brittle cracking
Problem Phenomenon
Products break brittlely under force.
Cause Analysis
Thermal decomposition breaks molecular chains; or stress concentration at inserts/sharp corners; too much regrind.
Solution
①Control melt temperature to prevent decomposition; ②structural fillets; ③control regrind; ④check hot runner temperature.
Key Takeaway
Brittle cracking = decomposition or stress, distinguish first by smelling the odor.
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