Inkjet Printing of Silica Aerogel for Fabrication of 2-D Patterned Thermal Insulation Layers

Junmo Koo, Jun Woo Kim, Minsik Kim, Sungwon Yoon, Joon Hyung Shim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Aerogels have the lowest thermal conductivity (< 0.2 W m−1 K−1) among known materials owing to the presence of pores, which constitute over 90% of the structure. Aerogels have mainly been commercialized for use as a thermal insulation material for building applications, such as walls and pipes. Herein, a silica aerogel thin film was fabricated by using a commercial and cost-effective HP inkjet printer. Next, silica aerogel ink was synthesized by mixing hydrophilic silica aerogel powder, solvent, and other organic additives. The thickness and pattern of the silica aerogel thin films were easily controlled by increasing the number of printing cycles and patterning by using a drawing software. The printed silica aerogel thin film had a smooth surface and thickness with well-distributed ink particles. Further, the aerogel had a unique structure comprising nanopores and nanonetworks. The thermal conductivity of the silica aerogel thin film was approximately 0.05 W m−1 K−1 at 30–300 °C. Inkjet printing of silica aerogels is expected to be a strong candidate for thermal insulating applications in micro-scale systems such as batteries and electronic chips.

Original languageEnglish
Pages (from-to)445-451
Number of pages7
JournalInternational Journal of Precision Engineering and Manufacturing - Green Technology
Volume8
Issue number2
DOIs
Publication statusPublished - 2021 Mar

Keywords

  • Aerogel
  • Inkjet printing
  • Nano structure
  • Patterning
  • Thermal insulation

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Management of Technology and Innovation

Fingerprint

Dive into the research topics of 'Inkjet Printing of Silica Aerogel for Fabrication of 2-D Patterned Thermal Insulation Layers'. Together they form a unique fingerprint.

Cite this