Graphitic carbon nitride/phosphorus-rich aluminum phosphinates hybrids as smoke suppressants and flame retardants for polystyrene

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

63 Scopus Citations
View graph of relations

Author(s)

  • Yongqian Shi
  • Bin Yu
  • Lijin Duan
  • Zhou Gui
  • Bibo Wang
  • Yuan Hu

Detail(s)

Original languageEnglish
Pages (from-to)87-96
Journal / PublicationJournal of Hazardous Materials
Volume332
Publication statusPublished - 15 Jun 2017

Abstract

Graphitic carbon nitride/organic aluminum hypophosphites (g-C3N4/OAHPi) hybrids, i.e., CPDCPAHPi and CBPODAHPi, were synthesized by esterification and salification reactions, and then incorporated into polystyrene (PS) to prepare composites through a melt blending method. Structure and morphology characterizations demonstrated the successful synthesis of PDCPAHPi, BPODAHPi and their hybrids. The g-C3N4 protected OAHPi from external heat and thus improved the thermal stability of OAHPi. Combining g-C3N4 with OAHPi contributed to reduction in peak of heat release rate, total heat release and smoke production rate of PS matrix. Reduced smoke released has also been demonstrated by smoke density chamber testing. Additionally, introduction of the hybrids led to decreased release of flammable aromatic compounds. These properties improvement could be attributed to gas phase action and physical barrier effect in condensed phase: phosphorus-containing low-energy radicals generated from OAHPi effectively captured high-energy free-radicals evolved from PS; g-C3N4 nanosheets retarded the permeation of heat and the escape of volatile degradation products. Therefore, g-C3N4/OAHPi hybrids will provide a potential strategy to reduce the fire hazards of PS.

Research Area(s)

  • Composites, Flame retardancy, Graphitic carbon nitride, Smoke suppression

Citation Format(s)

Graphitic carbon nitride/phosphorus-rich aluminum phosphinates hybrids as smoke suppressants and flame retardants for polystyrene. / Shi, Yongqian; Yu, Bin; Duan, Lijin; Gui, Zhou; Wang, Bibo; Hu, Yuan; Yuen, Richard K.K.

In: Journal of Hazardous Materials, Vol. 332, 15.06.2017, p. 87-96.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review