한국섬유공학회지 (Textile Science and Engineering)

  • 제56권3호
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  • Pages.162-170
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  • 2019
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지
DOI QR코드

DOI QR Code

SiO2/Graphene Oxide 첨가에 따른 에폭시 나노 복합재료의 특성 연구 및 좌굴해석

Buckling Analysis and Research on Properties of Epoxy Resin Nanocomposites with SiO2/Graphene Oxide

  • 투고 : 2019.05.22
  • 심사 : 2019.06.20
  • 발행 : 2019.06.30
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, graphene oxide(GO) was synthesized using Hummer's method. Then, silica nanoparticles-coated GO($SiO_2/GO$) were synthesized by in-situ sol-gel synthesis under a water-alcohol mixture at room temperature ($25^{\circ}C$). GO and $SiO_2$ were used as additives in epoxy resin nanocomposites that were prepared by mixing Tetraglycidyl diamino diphenyl methane(TGDDM) and hardner(M-DEA+M-MIPA). Fourier transform infrared(FT-IR) spectra and X-ray photoelectron spectroscopy (XPS) of $SiO_2/GO$ were conducted. Thermal and mechanical properties of epoxy resin nanocomposites were confirmed by analytical methods such as TG-DTA, DMA, fracture toughness, and tensile strength. The fracture surfaces of epoxy resin nanocomposites with different contents of GO and $SiO_2/GO$ were observed by a Scanning Electron Microscope(SEM). The mechanism for mechanical properties of epoxy resin nanocomposites was analyzed by modeling of nanocomposites with different GO and $SiO_2$ weights. Due to the GO, both the heat resistance and the glass transition temperature of the epoxy resin nanocomposites were improved. Interestingly, when 0.1 wt% of GO was added to the epoxy resin/hardener mixture, the mechanical properties increased compared to that of neat epoxy resin. There results were caused by an aggregation between the GO and $GO/SiO_2$. Based on the analysis of the mechanical properties of $SiO_2$ addition, buckling analysis was performed and the critical load and buckling shape were confirmed.

키워드

참고문헌

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