Processing and compressive properties of aerogel/epoxy composites

Nikhil Gupta, William Ricci

Research output: Contribution to journalArticle

Abstract

Aerogels are ultra-lightweight materials composed of almost 99.98 vol.% of porosity and present excellent opportunities for developing lightweight composite materials. Special properties such as electrical insulation and controlled dielectric constant can be generated in such composites. Ultra-low density and hydrophobic nature of aerogels make it difficult to mix them in epoxy resins. The present research is aimed at developing fabrication methods for aerogel/epoxy composites. The development of such methods requires encapsulating the aerogel particles in epoxy resin without infiltrating them. Compression tests are conducted on these composites and their deformation and fracture behavior is studied. The composites are found to have compressive failure strain of over 25%. It is observed that the higher density composites showed higher compressive modulus but lower yield strength. The reduction in the yield strength is attributed to the early crack initiation in these specimens.

Original languageEnglish (US)
Pages (from-to)178-182
Number of pages5
JournalJournal of Materials Processing Technology
Volume198
Issue number1-3
DOIs
StatePublished - Mar 3 2008

Fingerprint

Aerogels
Composite materials
Processing
Epoxy Resins
Epoxy resins
Yield stress
Crack initiation
Particles (particulate matter)
Insulation
Compaction
Permittivity
Porosity
Fabrication

Keywords

  • Aerogel
  • Compression
  • Polymer matrix composite

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Processing and compressive properties of aerogel/epoxy composites. / Gupta, Nikhil; Ricci, William.

In: Journal of Materials Processing Technology, Vol. 198, No. 1-3, 03.03.2008, p. 178-182.

Research output: Contribution to journalArticle

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