Jump to main content
Jump to site search

Issue 16, 2018
Previous Article Next Article

Preparation of dual-functionalized graphene oxide for the improvement of the thermal stability and flame-retardant properties of polysiloxane foam

Author affiliations

Abstract

Polysiloxane foam (PSF) is a foam material with outstanding performance. However, the limiting oxygen index (LOI) of pure PSF is only 22.0 vol%, which can be attributed to combustible materials. In this work, graphene oxide (GO) was functionalized with hexachlorocyclotriphosphazene (HCCP) and 3-aminopropyltriethoxy-silane (APTS). The introduction of the functionalized GO into the PSF matrix has significantly improved the dispersion and flame-retardant properties of the final PSF composite. The char residue of PSF with 1.0 wt% functionalized GO content is 43.04%, which is considerably higher than that of the pure PSF (23.18%). Furthermore, the Tmax of PSF with 5.0 wt% functionalized GO content has increased from 585.9 °C to 668.8 °C. The results of the cone calorimetry test indicate that modification with functionalized GO prolongs the combustion of PSF composites. The LOI value of PSF with 5.0 wt% functionalized GO content has increased from 22.0% to 27.6%. In addition, the peak heat release rate, total heat release, and total smoke production of PSF with 5.0 wt% functionalized GO content were decreased by 49.2%, 14.5%, and 62.2% relative to those of pure PSF. These results can be ascribed to the barrier effect of GO, the condensed-phase and gas-phase mechanisms of HCCP, and the bonding effect of APTS.

Graphical abstract: Preparation of dual-functionalized graphene oxide for the improvement of the thermal stability and flame-retardant properties of polysiloxane foam

Back to tab navigation

Publication details

The article was received on 16 May 2018, accepted on 12 Jul 2018 and first published on 13 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ02361A
Citation: New J. Chem., 2018,42, 13873-13883
  •   Request permissions

    Preparation of dual-functionalized graphene oxide for the improvement of the thermal stability and flame-retardant properties of polysiloxane foam

    T. Xu, C. Zhang, P. Li, X. Dai, L. Qu, Y. Sui, J. Gu and Y. Dou, New J. Chem., 2018, 42, 13873
    DOI: 10.1039/C8NJ02361A

Search articles by author

Spotlight

Advertisements