CFRP와 금속 재료의 접합을 위한 epoxy/MWCNT의 특성 분석
The Analysis on Properties of Epoxy/MWCNT for Bonding CFRP to Steel Plates
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초록
에폭시 수지의 열적 특성과 접합 특성에 대해 다중벽 탄소 나노 튜브 (MWCNT)의 효과가 이중 중첩 전단시험에 의해 연구되었다. Epoxy/MWCNT 복합 수지는 에폭시 수지(araldite 2011)에 다양한 질량 분율로 MWCNT 를 분산하여 제조되었다. MWCNT의 효과를 확인하기 위해 접합강도 시험이 열특성 변형 만능재료시험기에 의해 진행되었고 충격강도 시험이 ASTM D256에 따라 진행되었다. 금속 판재와 탄소섬유강화복합재료가 실험 재료로써 사용되었으며, 열적 안정성 분석은 열 중량 분석기와 시차 주사 열량기에 의해 진행되었다. 또한 접합강도 시험 후 시편의 형태학적 특성은 주사전자현미경에 의해 관찰되었고 파괴거동을 알아보기 위하여 광학현미경을 사용하였다. 에폭시 수지와 비교하였을 때 epoxy/MWCNT 복합 수지가 물리적 특성이 향상되는 것을 나타내었다.
Abstract
The effect of a multi walled carbon nanotubes (MWNCT) on the adhesive properties and thermal properties of epoxy were studied by double lap-shear tests. Epoxy/MWCNT resins were prepared from a different amount of the MWCNT incorporated into the epoxy resins (araldite 2011). Steel plates and carbon fiber reinforced plastics (CFRP) were chosen as materials. Mechanical tests were performed by a universal testing machine (UTM). The analysis of thermal properties were conducted by a thermogravimetric analyzer (TGA) and a differential scanning calorimetry (DSC). The fracture surface morphology was examined using a scanning electron microscopy (SEM) and optical microscope. Compared to neat epoxy, it was found that the mechanical properties of epoxy/MWCNT resins are increased.
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