한국섬유공학회지 (Textile Science and Engineering)

  • 제55권6호
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  • Pages.444-449
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  • 2018
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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

멜트블로운 폴리프로필렌/실리카 에어로겔 부직포의 제조와 단열 특성 분석

Fabrication and Thermal Insulation Characterization of Melt-Blown Polypropylene/Silica Aerogel Nonwoven Fabrics

  • 투고 : 2018.12.01
  • 심사 : 2018.12.21
  • 발행 : 2018.12.31
⟨ 이전 논문 다음 논문 ⟩

초록

To develop heat insulation fabrics with lightweight, low volume and excellent thermal insulation properties, in this study, a binder-free polypropylene/silica aerogel nonwoven fabric with an area density of ${\sim}79.7g/m^2$ was fabricated via a facile melt-blowing process, and its structure, thermal conductivity and thermal insulation properties were investigated. For comparison, a polyester hollow fiber nonwoven having a similar area density of ${\sim}84.6g/m^2$ was prepared by needle-punching. Additionally, a series of composite nonwoven fabrics was prepared by layering the melt-blown polypropylene/silica aerogel nonwoven and the polyester hollow fiber nonwoven in various combinations, and their thermal insulation properties and thermal conductivity were analyzed. Scanning electron microscopic analyses revealed that 5 wt% silica aerogel added during the melt-blown process was adhered well to polypropylene fiber surfaces of the nonwoven fabric. As a result, the melt-blown polypropylene/silica aerogel nonwoven fabric exhibited a low thermal conductivity of $43mW/m{\cdot}K$ and relatively high level of thermal insulation performance, although its thickness (~1.5 mm) was lower than that (~2.2 mm) of needle-punched polyester hollow fiber nonwoven with a similar area density. The thermal conductivity was lowered and thermal insulation performance was improved, as the melt-blown polypropylene/silica aerogel nonwoven fabric was layered. It was also found that increasing the number of melt-blown polypropylene/silica aerogel nonwoven fabric layers in the composite nonwoven fabrics layered in various combinations decreased the thermal conductivity and improved the thermal insulating properties.

키워드

참고문헌

  1. A. Soleimani Dorcheh and M. H. Abbasi, "Silica Aerogel; Synthesis, Properties and Characterization", J. Mater. Process. Technol., 2008, 199, 10-26. https://doi.org/10.1016/j.jmatprotec.2007.10.060
  2. T. Y. Ng, J. J. Yeo, and Z. S. Liu, "A Molecular Dynamics Study of the Thermal Conductivity of Nanoporous Silica Aerogel, Obtained Through Negative Pressure Rupturing", J. Non- Crystal. Solids, 2012, 358, 1350-1355. https://doi.org/10.1016/j.jnoncrysol.2012.03.007
  3. C.-Q. Hong, J.-C. Han, X.-H. Zhang, and J.-C. Du, "Novel Nanoporous Silica Aerogel Impregnated Highly Porous Ceramics with Low Thermal Conductivity and Enhanced Mechanical Properties", Scr. Mater., 2013, 68, 599-602. https://doi.org/10.1016/j.scriptamat.2012.12.015
  4. A. Neugebauer, K. Chen, A. Tang, A. Allgeier, L. R. Glicksman, and L. J. Gibson, "Thermal Conductivity and Characterization of Compacted, Granular Silica Aerogel", Energy and Buildings, 2014, 79, 47-57. https://doi.org/10.1016/j.enbuild.2014.04.025
  5. K. W. Oh, D. K. Kim, and S. H. Kim, "Ultra-porous Flexible PET/aerogel Blanket for Sound Absorption and Thermal Insulation", Fiber. Polym., 2009, 10, 731-737. https://doi.org/10.1007/s12221-010-0731-3
  6. R. Baetens, B. P. Jelle, and A. Gustavsen, "Aerogel Insulation for Building Application: A State-of-the-art Review", Energ. Buildings, 2011, 43, 761-769. https://doi.org/10.1016/j.enbuild.2010.12.012
  7. M. Sachithanadam and S. C. Joshi, "Silica Aerogel Composites", Springer, Singapore, 2016.
  8. J. Yan, H. Y. Choi, Y. K. Hong, and Y. G. Jeong, "Thermal Insulation Performance of Cotton and PET-based Hybrid Fabrics Impregnated with Silica Aerogel via a Facile Dip-dry Process", Fiber. Polym., 2018, 19, 854-860. https://doi.org/10.1007/s12221-018-1077-5
  9. Z. T. Mazraeh-shahi, A. M. Shoushtari, A. R. Bahramian, and M. Abdouss, "Synthesis, Structure and Thermal Protective Behavior of Silica Aerogel/PET Nonwoven Fiber Composite", Fiber. Polym., 2014, 15, 2154-2159. https://doi.org/10.1007/s12221-014-2154-z
  10. X. Xiong, T. Yang, R. Mishra, and J. Militky, "Transport Properties of Aerogel-based Nanofibrous Nonwoven Fabrics", Fiber. Polym., 2016, 17, 1709-1714. https://doi.org/10.1007/s12221-016-6745-8
  11. C. J. Ellison, A. Phatak, and D. W. Giles, "Melt Blown Nanofibers: Fiber Diameter Distributions and Onset of Fiber Breakup", Polymer, 2007, 48, 3306-3316. https://doi.org/10.1016/j.polymer.2007.04.005
  12. S. F. Xin and X. H. Wang, "Mechanism of Fiber Formation in Melt Blowing", Ind. Eng. Chem. Res., 2012, 51, 10621-10628. https://doi.org/10.1021/ie300861p
  13. K. H. Bode, "Thermal-conductivity Measurment with the Plate Apparatus-influence of the Guard Ring Width on the Arruracy of Measurement", Inter. J. Heat Mass Transfer, 1980, 23, 1273-1280. https://doi.org/10.1016/0017-9310(80)90057-5
  14. M. H. Rausch, K. Krzeminski, A. Leipertz, and A. P. Froba, "A New Guarded Parallel-plate Instrument for the Measurement of the Thermal Conductivity of Fluids and Solids", Int. J. Heat Mass Transfer, 2013, 58, 610-618. https://doi.org/10.1016/j.ijheatmasstransfer.2012.11.069