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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
Article
  • 49 Downloads

Abstract

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.

Keywords

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

Notes

Acknowledgements

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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