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