Material Analysis
13 مشاهدة
CMC and filler interface bonding poor
ظاهرة المشكلة
The tensile strength of the CMC and filler composite material is instead lower than that of pure CMC, playing a negative role
تحليل الأسباب
The interface affinity between the filler and CMC is poor and no coupling agent treatment is used; the filler particles agglomerate and the dispersion particle size is >5μm; the wettability of CMC to the rigid filler is insufficient
الحل
1) Filler pretreatment with silane coupling agent KH-560 0.5-1wt%; 2) Add CMC compatibilizer 2-3wt% to strengthen the interface bonding; 3) Use ultrafine filler d50<2μm; 4) Twin-screw high-shear blending to ensure dispersion
الخلاصة الأساسية
The interface between the elastomer and the filler requires the dual action of coupling agent and compatibilizer, otherwise the filler has a negative effect
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