The enhancement on thermal stability and charring–forming capability of nitration group
- 49 Downloads
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.
KeywordsHexaphenoxy-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.
- 1.Tang G, Deng D, Chen J, et al. The influence of organo-modified sepiolite on the flame-retardant and thermal properties of intumescent flame-retardant polylactide composites. J Therm Anal Calorim. 2017;37:1–10.Google Scholar
- 12.Wang N, Hu L, Babu HV, et al. Effect of tea saponin-based intumescent flame retardant on thermal stability, mechanical property and flame retardancy of natural rubber composites. J Therm Anal Calorim. 2016;128(2):1–10.Google Scholar