Material Analysis
11 조회수
Poor interfacial bonding between EVA and filler
문제 현상
Tensile strength of EVA and filler composite is instead lower than pure EVA, playing a negative role
원인 분석
Poor interfacial affinity between filler and EVA without coupling agent treatment; filler particles agglomerated with dispersion particle size >5μm; insufficient wetting of rigid filler by EVA
해결 방법
1) Filler pretreatment with silane coupling agent KH-560 at 0.5-1wt%; 2) Add EVA compatibilizer 2-3wt% to strengthen interfacial bonding; 3) Use ultrafine filler d50<2μm; 4) Twin-screw high shear blending to ensure dispersion
핵심 요약
Elastomer-filler interface needs dual action of coupling agent and compatibilizer, otherwise filler has negative effect
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