Preparation of hexakis (4-aldehyde phenoxy) cyclotriphosphazene grafted kaolinite and its synergistic fire resistance in poly (butylene succinate)

Sheng Zhang, Yuchun Li, Jia Guo, Lingling Gu, Hongfei Li, Bin Fei, Jun Sun, Xiaoyu Gu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Hexakis (4-aldehyde phenoxy) cyclotriphosphazene (HAPCP) was synthesized firstly and then it was grafted onto the exfoliated kaolinite (Kaol) to prepare K-HAPCP. The structure of HAPCP and K-HAPCP was well characterized. K-HAPCP was used as synergistic agent in poly (butylene succinate) (PBS)/intumescent flame retardants (IFR) composites. The combustion behavior of PBS composites was reflected by limited oxygen index (LOI), vertical burning (UL-94), and cone calorimeter test. The thermal stability was traced by thermogravimetric analysis. PBS is highly flammable with the LOI value of only 21.9% and cannot pass any UL-94 grade during vertical burning test. By the presence of 22 wt% IFR and 3 wt% K-HAPCP, the LOI of PBS composite is sharply increased to 40.3% and the sample can pass UL-94 V-0 rating with excellent anti-dripping properties. Moreover, the degradation behavior is investigated and the probable flame retardant mechanism is also proposed.

Original languageEnglish
Pages (from-to)1024-1035
Number of pages12
JournalPolymer Composites
Issue number3
Publication statusPublished - 1 Mar 2020


  • hexakis (4-aldehyde phenoxy) cyclotriphosphazene
  • kaolinite
  • poly(butylene succinate)
  • synergistic fire resistance

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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