Material Analysis
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Poor EMA chemical resistance
Problem Phenomenon
After soaking EMA products in acid, alkali or solvent, mechanical properties decline >30%
Cause Analysis
EMA has high affinity for specific chemicals and is attacked and swelled; EMA molecular chains attacked by chemicals and broken
Solution
1) Select chemical resistant grade; 2) Slight crosslinking to reduce swelling; 3) Product surface coating protection; 4) Add chemical stabilizer
Key Takeaway
Poor chemical resistance is caused by EMA chemical affinity; selecting chemical resistant grade and coating are key
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