Molding Process 7 조회수

Poor EVOH Chemical Resistance

문제 현상

EVOH products soaked in acid/alkali solvents show mechanical decline >30%

원인 분석

EVOH has high affinity for specific chemicals, being attacked and swollen; EVOH molecular chains attacked by chemicals and broken

해결 방법

1) Select chemical-resistant grade; 2) Slight crosslinking to reduce swelling; 3) Product surface coating protection; 4) Add chemical stabilizer

핵심 요약

Poor chemical resistance is caused by EVOH chemical affinity; selecting chemical-resistant grade and coating are key

EVOHchemical resistancechemical attackslight crosslinkingsurface coating

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