CNT 첨가에 따른 유리섬유/섬유 복합재 제작 및 특성 평가
Fabrication of carbon nano tube reinforced grass fiber composite and investigation of fracture surface of reinforced composites
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본 연구에서는 CNT 첨가에 따른 유리섬유/에폭시의 강도 변화를 관찰하기 위해서 에폭시 기지 상에 CNT를 분산 시켜 유리섬유 표면에 도포하였다. 제작된 유리섬유/에폭시/CNT 복합재의 특성을 강도 측정기를 이용해 평가하고, 파괴메커니즘을 분석하기 위해서, 원자힘현미경과 전자현미경을 활용하여 분석하였다. 원자힘현미경 이미지들을 기반으로 line trace 분석을 통해 CNT 소재의 굵기 및 길이를 분석한 결과, 대부분의 CNT는 약 10 µm 이상의 길이와 평균적으로47.72 ± 4.0 nm의 두께를 가진것으로 확인되었다. 3 wt%로 혼합한 유리섬유/에폭시/CNT 복합재의 경우 대조 시편인 유리섬유/에폭시와 비교 시, 740.17 ± 111.05 N/mm2에서 816.56 ± 200.26 N/mm2로 약 10% 이상의 인장 강도 향상이 관측되었다. 전자 현미경을 이용한 파단면 분석 결과, 에폭시 기지 층에 분산된 CNT가 복합재의 길이 방향으로 배열되어 있음이 관찰되었으며, 유리섬유/에폭시/CNT에 하중 인가 시, 에폭시 층에서 생성된 크랙들의 성장을 에폭시 수지상에 분산된 CNT들이넥킹 역할을 하면서, 복합재의 인장 강도 향상이 되었다고 판단된다.
Abstract
The fiber composites have been investigated as lightweight structure material platforms for aerospace applications because their strength can be enhanced by adding reinforcement without a significant increase in weight. In this study, the fabrication and characterization of carbon nanotube (CNT) reinforced glass fiber composites are demonstrated to enhance the tensile strength of longitudinal direction along the glass fibers. Due to the reinforcement of CNT in epoxy layers, the yield strength of fiber/epoxy composites is enhanced by about 10 %. Furthermore, using scanning electron microscopy, analysis of fracture surfaces shows that mixed CNT in epoxy layers acts as necking agents between fractured surfaces of fiber/epoxy; thereby, initiation and evolution of crack across fiber composite can be suppressed by CNT necking between fractured surfaces.
참고문헌 (28)
- G. C. Jacob, "Energy absorption in polymer composites for automotive crashworthiness", Journal of Composite Materials, 36, pp.813~ (2002)
- S. Endo, "Improving transmission efficiency with magnetic coating technology for lightweight wireless power transfer coil using aluminum plate", Journal of the Magnetics Society of Japan, 43, pp.125~ (2019)
- 막슈다쥬래바, "Lightweight material for the speed reducer housing of a car chassis", Journal of Mechanical Science and Technology, 31(7), pp.3219~3224 (2017), 대한기계학회
- A. A. Adebisi, "Performance assessment of aluminium composite material for automotive brake rotor", International Journal of Vehicle Systems Modelling and Testing, 9, pp.207~ (2014)
- Y. T. Du, "Fabrication and mechanical behaviors of carbon fiber reinforced composite foldcore based on curved-crease origami", Composites Science and Technology, 74, pp.94~ (2019)
- G. C. Jacob, "Crashworthiness of automotive composite material systems", Journal of Applied Polymer Science, 92, pp.3218~ (2004)
- E. Yousefi, "Effect of nanofiller geometry on the energy absorption capability of coiled carbon nanotube composite material", Composites Science and Technology, 153, pp.222~ (2017)
- P. Rosso, "A toughened epoxy resin by silica nanoparticle reinforcement", Journal of Applied Polymer Science, 100, pp.1849~ (2006)
- A. Omrani, "The effects of alumina nanoparticle on the properties of an epoxy resin system", Materials Chemistry and Physics, 114, pp.145~ (2009)
- J. Liu, "Electromagnetic wave absorption properties of flaky Fe-Ti-Si-Al nanocrystalline composites", Journal of Magnetism and Magnetic Materials, 322, pp.940~ (2010)
- J. Huo, "Polymeric nanocomposites for electromagnetic wave absorption", Journal of Materials Science, 44, pp.3917~ (2009)
- Z. Gao, "Ferrocene decorative phenolic epoxy resin as lightweight thermal-stable dielectric relaxor for electromagnetic wave absorption", Composites Communications, 22, pp.100472~ (2020)
- P. K. Roy, "Effect of SBA-15 on the energy absorption characteristics of epoxy resin for blast mitigation applications", Iranian Polymer Journal, 22, pp.709~ (2013)
- H. Luo, "Improved dielectric properties and energy storage density of poly(vinylidene fluoride-co-hexafluoropropylene)nanocomposite with hydantoin epoxy resin coated BaTiO3", ACS Applied Materials & Interfaces, 7, pp.8061~ (2015)
- M. Shariati, "Mechanical properties and energy absorption capability of thin-walled square columns of silica", epoxy nanocomposite, 2015, pp.78, 362~
- B. Hornbostel, "Attenuation of electromag netic waves by carbon nanotube composites", Physica E, 40, pp.2425~ (2008)
- Z. P. Wu, "Electromagnetic interference shielding of carbon nanotube macrofilms", Scripta Mater, 64, pp.809~ (2011)
- M. A. Seo, "Terahertz electromagnetic interference shielding using single-walled carbon nanotube flexible films", Applied Physics Letters, 93, pp.231905~ (2008)
- M. C. Weisenberger, "Enhanced mechanical properties of polyacrylonitrile", multiwall carbon nanotube composite fibers, 2003, pp.3, 535~
- B. Yazdani, "Graphene and carbon nanotube(GNT)-reinforced alumina nanocomposites", J. Eur. Ceram. Soc, 35, pp.179~ (2015)
- J. P. Salvetat, "Mechanical properties of carbon nanotubes", Applied Physics A, 69, pp.255~ (1999)
- J. Zhu, "Processing a glass fiber reinforced vinyl ester composite with nanotube enhancement of interlaminar shear strength", Composites Science and Technology, 67, pp.1509~ (2007)
- Y. Hua, "Positive synergistic effect of graphene oxide", carbon nanotube hybrid coating on glass fiber, Composites Science and Technology, pp.2017, 149[DOI]
- V. Lordi, "Molecular mechanics of binding in carbon-nanotube-polymer composites", Journal of Materials Research, 15, pp.2770~ (2000)
- C. S. Grimmer, "Enhancement of delamination fatigue resistance in carbon nanotube reinforced glass fiber", polymer composites, 2010, pp.70, 901~
- P. F. Wang, "Improvement of impactresistant property of glass fiber-reinforced composites by carbon nanotube-modified epoxy and pre-stretched fiber fabrics", Journal of Materials Science, 50, pp.5978~ (2015)
- L. M. Gao, "In situ sensing of impact damage in epoxy", glass fiber composites using percolating carbon nanotube networks, 2011, pp.49, 3382~
- A. O. Fulmali, "Effects of carbon nanotube", polymer interfacial bonding on the long-term creep performance of nanophased glass fiber, Polym Composite, pp.2020, 41[DOI]