Extrusion & Post
10 조회수
CEF blended with incompatible resin delaminates
문제 현상
CEF blended with polar resins such as PA/ABS, the extrudate completely delaminates, extremely poor mechanics
원인 분석
CEF and polar resin polarity difference large, compatibility zero, interfacial adhesion extremely low, no compatibilizer used
해결 방법
1) Use CEF graft compatibilizer CEF-g-MAH 2-5wt%; 2) Add epoxy compatibilizer 1-2wt%; 3) CEF addition amount <10wt%, keep the other resin as continuous phase; 4) Twin-screw high-shear blending to disperse CEF <0.3μm
핵심 요약
Blends with large polarity differences need reactive compatibilizers to form chemical bonding at the interface to solve
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