Journal of Thermal Analysis and Calorimetry

, Volume 134, Issue 3, pp 1557–1564 | Cite as

The enhancement on thermal stability and charring–forming capability of nitration group

  • Yunyun Yang
  • Xilei Cao
  • Hang Luo
  • Xufu Cai


To obtain a novel charring agent, hexaphenoxy-cyclotriphosphazene (HCTP) was designed to be nitrified hexaphenoxy-cyclotriphosphazene (N-HCTP) by one step of nitration. Then the charring capability and thermal degradation behaviors of HCTP and N-HCTP were extensively investigated with the thermogravimetric analysis (TG) under pure nitrogen and air, respectively. TG results showed that nitration made the char residue yield of N-HCTP increase from 0 to 40% under nitrogen. And the effects of nitration made the char residue yield of N-HCTP increase from 0 to 2.3% under air. Meanwhile, TG was used to show the effect of nitration in inducing charring of acrylonitrile–butadiene–styrene under nitrogen. With 30% addition of N-HCTP, the char residual yield increased from 0.9 to 22%. Then TG/FTIR was used to research their gaseous products and their releasing intensity during decomposition. The TG/FTIR showed that the nitration made the decomposition of N-HCTP completely different from that of HCTP.


Hexaphenoxy-cyclotriphosphazene (HCTP) Nitrified hexaphenoxy-cyclotriphosphazene (N-HCTP) Nitration Charring agent Charring–forming capability Gaseous analysis 



We would like to thank the generous supports by the Experiment Center of Polymer Science and Engineering Academy, Sichuan University, Chengdu, China.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  1. 1.Department of Polymer Science and Materials, The State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduChina

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