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. 2018 Jul 25;8(47):26563-26570.
doi: 10.1039/c8ra03007c. eCollection 2018 Jul 24.

Preparation of carbon-based hybrid particles and their application in microcellular foaming and flame-retardant materials

Zhicai He  1 , Zhengping Zhao  2 , Shengwei Xiao  1 , Jintao Yang  3 , Mingqiang Zhong  3
Affiliations

Preparation of carbon-based hybrid particles and their application in microcellular foaming and flame-retardant materials

Zhicai He et al. RSC Adv. .

Abstract

Polymeric microcellular foams with high strength and light weight are very important for industrial applications. However, regulating their cell structure and their weak flame retardancy are problematic. We designed single-arm POSS-based ionic liquids ([bel-POSS][PF6]), and constructed hybrid composites based on physical interaction between ionic liquids and carbon-based materials in PS microcellular foaming. Ionization of bel-POSS could result in a quaternary ammonium reaction and ion-exchange reaction, and the carbon materials exhibit good dispersion through blending. The prepared hybrid composites showed high CO2 adsorption. Conical calorimeter tests showed that PS composite materials could reduce the heat release rate, total heat release, toxic gases (CO2 and CO) release, and amount of smoke generated. These carbon materials could affect PS micropore structure, including the cell diameter and density. Upon addition of 5 wt% of carbon materials, the hole diameter decreased by >50%, and the hole density increased nearly ten folds.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Fig. 1
Fig. 1. Synthesis of [bel-POSS][PF6].
Fig. 2
Fig. 2. Preparation of carbon-based hybrid particles.
Fig. 3
Fig. 3. FT-IR spectra of bel-POSS, [bel-POSS][PF6], [bel-POSS][PF6]/RGO and [bel-POSS][PF6]/CNTs.
Fig. 4
Fig. 4. DSC curves of pure PS, PS/5% RGO hybrid particle, PS/5% CNTs hybrid particle and [bel-POSS][PF6].
Fig. 5
Fig. 5. CO2 adsorption of carbon nanoparticle hybrid particles (1 atm, 40.0 °C).
Fig. 6
Fig. 6. Dispersion of carbon hybrid particles in styrene solution (12 h).
Fig. 7
Fig. 7. CO2 solubility in pure PS and PS composites (13.8 MPa, 35 °C).
Fig. 8
Fig. 8. The heat release rate (HRR) and total heat release (THR) of pure PS and PS composites.
Fig. 9
Fig. 9. SEM images of pure PS and PS composite foams (100 °C, 13.8 MPa).
See this image and copyright information in PMC

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