Material Drying
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Defects in PES film casting
Problem Phenomenon
Pores and uneven thickness appear when PES solution is cast into film
Cause Analysis
Solution concentration and viscosity too high or too low; solvent volatilization rate not properly controlled; hot air uneven during drying
Solution
Optimize the casting solution concentration and viscosity (adjust if necessary); control gradient drying conditions; optimize the air field uniformity of the casting machine
Key Takeaway
PES film formation has strict requirements on every step of the process
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