Extrusion & Post
10 조회수
EMA Delamination When Blended with Incompatible Resins
문제 현상
When EMA is blended with polar resins such as PA/ABS, the extrudate completely delaminates, mechanical properties extremely poor
원인 분석
The polarity difference between EMA and polar resins is large, compatibility is zero, interfacial adhesion extremely low, no compatibilizer used
해결 방법
1) Use EMA grafted compatibilizer EMA-g-MAH 2-5wt%; 2) Add 1-2wt% epoxy compatibilizer; 3) EMA addition <10wt% to keep the other resin as the continuous phase; 4) Twin-screw high-shear blending to disperse EMA <0.3μm
핵심 요약
Blending with large polarity differences requires reactive compatibilizer to form chemical bonding at the interface to solve it
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