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Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin

Meixian Li1, Xin Hu1, Jie Yang1, Hongyu Yang1,3,*, Yao Yuan2,*

1 College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
2 Fujian Provincial Key Laboratory of Functional Materials and Applications, School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, 361024, China
3 State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China

* Corresponding Authors: Hongyu Yang. Email: email; Yao Yuan. Email: email

(This article belongs to this Special Issue: Bio-based Halogen-free Flame Retardant Polymeric Materials)

Journal of Renewable Materials 2022, 10(10), 2639-2654. https://doi.org/10.32604/jrm.2022.019491

Abstract

In this work, a bio-based flame retardant (Cy-HEDP) was synthesized from cytosine and HEDP through a facile salt-forming reaction and embedded into epoxy matrix to improve the flame retardancy and smoke suppression performance. The product Cy-HEDP was well characterized by FTIR, 1 H and 31P NMR and SEM tests. On the basis of the results, by adding 15 wt% Cy-HEDP, the EP15 can pass UL-94 V-0 rating, and the total smoke production (TSP) as well as total heat release (THR) can be decreased by 61.05% (from 22.61 to 8.7 m2 /m2 ) and 39.44% (from 103.19 to 62.50 MJ/m2 ) in comparison to the unfilled EP, reflecting the attenuated smoke toxicity and impeded heat generation. According to the analysis results of residual char, it can be concluded that Cy-HEDP possessed the ability to promote the formation of continuous and dense char layers, which would be a physical barrier to insulate oxygen and prevent heat feedback during the combustion of EP. This work provide inspiration towards developing bio-based flame retardant, probably extending the prospects to other polymeric material system.

Graphical Abstract

Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin

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Cite This Article

Li, M., Hu, X., Yang, J., Yang, H., Yuan, Y. (2022). Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin. Journal of Renewable Materials, 10(10), 2639–2654.



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