Molding Process
7 조회수
EAA surface stress whitening
문제 현상
Stress whitening on the surface of stressed areas of EAA products affecting appearance and strength
원인 분석
EAA molecular orientation under local stress causing refractive index difference and whitening; areas of internal stress concentration in the product
해결 방법
1) Reduce injection speed to reduce orientation stress; 2) Anneal at 80°C/2h to release stress; 3) Product design to avoid stress-concentrating sharp corners
핵심 요약
Stress whitening is caused by orientation and internal stress; reducing orientation and annealing are the key
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