@Article{jrm.2022.019491,
AUTHOR = {Meixian Li, Xin Hu, Jie Yang, Hongyu Yang, Yao Yuan},
TITLE = {Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {10},
YEAR = {2022},
NUMBER = {10},
PAGES = {2639--2654},
URL = {http://www.techscience.com/jrm/v10n10/48193},
ISSN = {2164-6341},
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, <sup>1</sup>
H and <sup>31</sup>P NMR and SEM tests. On the basis
of the results, by adding 15 wt% Cy-HEDP, the EP<sub>15</sub> 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 m<sup>2</sup>
/m<sup>2</sup>
) and 39.44% (from
103.19 to 62.50 MJ/m<sup>2</sup>
) 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.},
DOI = {10.32604/jrm.2022.019491}
}