Enhanced compressive strength of carbon aerogels with low density and high specific surface areas

Xiurong Zhu, Lousia J. Hope-Weeks, Roya Baghi, Vanessa R. Charles, Yi Yu, Lingwei Zhu, Xinghua Wang, Dongbo Li, Xianghua Zeng

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Glycidol was firstly used as catalyst to synthesize resorcinol (R) and formaldehyde (F) aerogels and carbon aerogels (CAs). The density, morphology, specific surface area, mechanical properties and sol–gel mechanisms of RF aerogels and CAs catalyzed by glycidol were investigated. The results revealed that the prepared RF aerogels and CAs were both low-density porous materials with high specific surface areas, the density of RF aerogels and CAs were 171 and 187 mg cm−3 respectively while the specific surface area of RF aerogels and CAs were 255 and 580 m2 g−1. The pristine CAs exhibited high mechanical properties even at a low density, the maximum compressive strengths (at a high strain of 16.81%) of CAs were higher than that of other reported pristine CAs with similar bulk density. This work may broaden the synthetic method of RF aerogels and CAs with high mechanical property.

Original languageEnglish
Pages (from-to)1279-1285
Number of pages7
JournalJournal of Porous Materials
Volume29
Issue number4
DOIs
StatePublished - Aug 2022

Keywords

  • Carbon aerogels
  • Epoxide
  • Formaldehyde
  • Glycidol
  • Resorcinol
  • Sol–gel

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