Novel Nitrogen-Phosphorus Flame Retardant Based on Phosphonamidate: Thermal Stability and Flame Retardancyopen access
- Authors
- Vothi, H[Vothi, Hai]; Nguyen, C[Nguyen, Congtranh]; Pham, LH[Pham, Lam H.]; Hoang, D[Hoang, DongQuy]; Kim, J[Kim, Jinhwan]
- Issue Date
- 29-Oct-2019
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS OMEGA, v.4, no.18, pp.17791 - 17797
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS OMEGA
- Volume
- 4
- Number
- 18
- Start Page
- 17791
- End Page
- 17797
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/8359
- DOI
- 10.1021/acsomega.9b02371
- ISSN
- 2470-1343
- Abstract
- A novel nitrogen-phosphorus flame retardant (P-N FR) based on phosphonamidate, dimethyl N,N'-1,3-phenylenebis(P-methylphosphonamidate) (DMPMP), was successfully synthesized and its flame-retarding performances and thermal degradation were compared with those of other P-N FRs and a phosphorus-based FR such as resorcinol bis(diphenyl phosphate) (RDP). DMPMP was applied to acrylonitrile-butadiene-styrene (ABS) and ethylene-vinyl acetate (EVA) to investigate the factors governing the flame-retarding behaviors of P-N FRs which would make them efficient for noncharrable polymers. V-0 ratings were achieved at 20 wt % loading of DMPMP for ABS and at a much lesser amount of DMPMP loading (10 wt %) for EVA. Meanwhile, no rating and V-2 were achieved even at 20-30 wt % loading of other P-N FRs or RDP for ABS and EVA, respectively. The results from thermogravimetric analysis, Fourier transform infrared, and UL-94V indicated that DMPMP is a highly efficient FR and acts mainly in a gas-phase flame-retarding mode of action. The condensed phase of DMPMP also contributed to the flame retardancy property through -NH- groups which tendentiously generate a nitrogen-phosphorus-rich residue because of the intermolecular coupling transesterification reaction. These results demonstrated the assumption that DMPMP has a high P content and good hydrostability, which exhibits good flame retardancy for noncharrable polymers such as ABS and EVA.
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Collections - Engineering > Chemical Engineering > 1. Journal Articles
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