Molding Process
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Brittle fracture of PLA (low unnotched impact strength)
Problem Phenomenon
PLA products also break under impact without a notch.
Cause Analysis
PLA itself is notch sensitive, but the unnotched impact strength is also not high, and the brittleness characteristics are obvious.
Solution
Toughen modified PLA (elastomer blending); product design without notches also needs a safety factor.
Key Takeaway
PLA brittleness is the core concern in preparation and use.
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