Material Analysis
9 views
PLA Thermal Degradation Products
Problem Phenomenon
Irritating odor appears in the PLA high-temperature processing workshop, and the safety assessment requires a clear composition
Cause Analysis
PLA begins to degrade at 300℃ and is 90% degraded at 450℃; the thermal degradation products contain irritating substances such as acetaldehyde, acrolein, methanol and acetic acid; combustible in fire
Solution
①Keep the processing temperature away from the 300℃ degradation zone; ②Workshop exhaust configuration; ③Compile the safety data sheet per the degradation products; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PLA's thermal safety boundary is at 300℃; the degradation product list is the basis for workshop safety assessment; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
Was this helpful?
0 people found this helpful
Thank you for your feedback!