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다양한 변화가 가능한 그래핀 복합체 제작 및 응용

Fabrication and Application of Graphene Composite with Various Modifications

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초록

In this study, we fabricated and evaluated graphene composite based 3D scaffolds and planar films. The hybrid composite was prepared by mixing a calculated amount of graphene nanopowder and polydimethylsiloxane in tetrahydrofuran solution. The hybrid composite is easy to manufacture into various forms using direct printing technology or a pressing method. A 3D scaffold structure was prepared at ambient temperature with a flow rate of 240 mm/min. The nozzle pressure was maintained at 350 kPa by adjusting the viscosity of the composite material. The planar film was prepared at different thicknesses using a roll-to-roll equipment. The prepared hybrid nanocomposites were evaluated to investigate their electrical properties according to temperature and mechanical deformation. The obtained results were consistent with each other. Therefore, it can be used effectively as sensors through shape definition.

Abstract

In this study, we fabricated and evaluated graphene composite based 3D scaffolds and planar films. The hybrid composite was prepared by mixing a calculated amount of graphene nanopowder and polydimethylsiloxane in tetrahydrofuran solution. The hybrid composite is easy to manufacture into various forms using direct printing technology or a pressing method. A 3D scaffold structure was prepared at ambient temperature with a flow rate of 240 mm/min. The nozzle pressure was maintained at 350 kPa by adjusting the viscosity of the composite material. The planar film was prepared at different thicknesses using a roll-to-roll equipment. The prepared hybrid nanocomposites were evaluated to investigate their electrical properties according to temperature and mechanical deformation. The obtained results were consistent with each other. Therefore, it can be used effectively as sensors through shape definition.

참고문헌 (9)

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  2. S. K. Bae, "Roll-to-roll production of 30-inch graphene films for transparent electrodes", Nat. Nanotechnol, 5(8), pp.574~578 (2010)
  3. M. K. Filippidou, "A flexible strain sensor made of graphene nanoplatelets", polydimethylsiloxane nanocomposite, 2015, pp.142, 7~11
  4. H. Kou, "Wireless flexible pressure sensor based on micro-patterned Graphene", PDMS composite, 2018, pp.277, 150~156
  5. S. Wu, "Stretchable strain sensors based on PDMS composites with cellulose sponges containing one-and two-dimensional nanocarbons", Sens. Actuator A-Phys, 279, pp.90~100 (2018)
  6. A. Nag, "3D printed mould-based graphite", PDMS sensor for low-force applications, 2018, pp.280, 525~534
  7. R. D. Farahani, "Three-Dimensional Printing of Multifunctional Nanocomposites : Manufacturing Techniques and Applications", Adv. Mater, 28(28), pp.5794~5821 (2016)
  8. J. I. Paredes, "Graphene Oxide Dispersions in Organic Solvents", Langmuir, 24(19), pp.10560~10564 (2008)
  9. 박태림, "다양한 조건에서의 PDMS의 마찰 특성에 대한 연구", 한국정밀공학회지, 35(8), pp.803~807 (2018), 한국정밀공학회

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