Blow Molding
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PSU vs PESU/PEI Material Selection Comparison
Problem Phenomenon
【Problem Phenomenon】Material selection for transparent high-temperature parts wavers between PSU, PESU, and PEI
Cause Analysis
PESU has the highest tensile and flexural strength among sulfones with better chemical resistance and excellent transparency, and can replace PEI while greatly improving transparency; PSU has slightly lower mechanical properties but moderate price; the three have progressively increasing sterilization and chemical resistance capabilities
Solution
Select material according to the strength-chemical resistance-sterilization cycles-cost matrix: choose PESU for high strength and transparency, PSU for cost sensitivity, PEI for performance limits; in gamma sterilization scenarios PESU has an obvious advantage in color stability
Key Takeaway
Sulfone material selection is ranked by increasing strength and chemical resistance, PESU is the transparent high-strength answer; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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