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Flame retardance enhancement of polyacrylonitrile with dimethyl vinylphosphonate
Author(s) -
Dong Xue,
Zhou QinZhuo,
Li Lei,
Li YingCheng,
Zhu MeiFang
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50718
Subject(s) - polyacrylonitrile , limiting oxygen index , thermogravimetric analysis , thermal stability , thermogravimetry , materials science , copolymer , fire retardant , fourier transform infrared spectroscopy , raman spectroscopy , pyrolysis , analytical chemistry (journal) , polymer chemistry , chemical engineering , chemistry , composite material , polymer , organic chemistry , char , physics , optics , engineering
To obtain a polyacrylonitrile (PAN) material with highly thermal stability and flame retardance properties, a novel P(AN‐ co ‐DMVP) copolymers were successfully synthesized by randomly copolymerization. According to thermogravimetry analysis, it revealed that incorporating dimethyl vinylphosphonate (DMVP) into the PAN chains can perform outstanding thermal stability. Furthermore, the limiting oxygen index increased from 18.6% to 30.0% with addition of 22.6 wt% DMVP. The results of cone calorimetry tests certified that the peak‐heat release peak and total heat release of P(AN‐ co ‐DMVP22.6) were remarkably dropped by 70% and 33%, respectively, suggesting excellent flame retardance. The relationship between copolymer structures and flame‐retardant performance was systematically investigated by X‐ray photoelectron spectroscopy, Raman spectroscopy, thermogravimetric analysis‐Fourier transform infrared and Pyrolysis gas chromatography/mass spectrometry. A comprehensive flame‐retardant mechanism has been proposed that DMVP plays a role in both the gaseous phase and the condensed phase.